Duolingo

4.6 (849)
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Learning management system for educational institutions

Overall rating

4.6 /5
(849)
Value for Money
4.5/5
Features
4.6/5
Ease of Use
4.8/5
Customer Support
4.3/5

94%
recommended this app
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849 Reviews

Sheikh Sakib Ishrak
Sheikh Sakib Ishrak
Overall rating
  • Industry: Computer Software
  • Company size: 201–500 Employees
  • Used Daily for 1+ year
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 10.0 /10

Home for Learning New Languages in a Fun, Casual Way

Reviewed on 2021/10/26

Duolingo knows how to keep learners motivated. Daily challenges, leaderboards, progress reports,...

Duolingo knows how to keep learners motivated. Daily challenges, leaderboards, progress reports, reminders, the app's relaxing theme - everything suits my passive learning style. As the lessons are short in length, I usually get into a lesson without dedicating a long session for it. It has been a great experience so far.

Pros

A wide range of language courses is available to enroll. One of the most attractive things about Duolingo is the way the entire learning process is set up - Gamified, relaxing bite-sized lessons to dive into anytime, even on the go. Progress tracking, looking back into previously learned contents, leaderboards, community to discuss with other learners/experts - everything is well organized and easily accessible. One great part is, anyone can dive in to learn any language without spending money while staying opted out of any advertisements.

Cons

While Duolingo gives a way of learning in a fun casual way in a gamified environment, someone who has a higher priority of learning a language over other activities might find Duolingo's pace rather slow. Sometimes the lessons do feel kind of repetitive. Not everyone learns at the same pace, and I think this balancing still has an opportunity for improvement. The mobile app still lacks various features available in the web app.

Tim
Overall rating
  • Industry: Financial Services
  • Company size: 11–50 Employees
  • Used Weekly for 1+ year
  • Review Source

Overall rating

  • Ease of Use
  • Likelihood to recommend 9.0 /10

Excellent start for learning languages - Tries to turn it into a game

Reviewed on 2022/04/03

Pros

I dont think i've seen other learning tools and apps succeed in gamification in the same way as Duolingo. This gives a great advantage for casual learners and can help them develop basics of a language as opposed to a standard learning environment.
It also provides a relatively productive way to handle 'slack time' that you may have during a bus, train or underground trip on the way to work or somewhere else.

Cons

The software is great for casual learning. But should you become serious about learning a language to the point of intensive lessons you may find Duolingo lacking compared to a traditional course.

Ewoma
Ewoma
Overall rating
  • Industry: Writing & Editing
  • Company size: Self Employed
  • Used Daily for 6-12 months
  • Review Source

Overall rating

  • Ease of Use
  • Likelihood to recommend 7.0 /10

Duolingo: an efficient language learning software

Reviewed on 2021/10/05

my experience with Duolingo has been all right. It gave me the opportunity to learn a new language...

my experience with Duolingo has been all right. It gave me the opportunity to learn a new language without paying for language classes which is good.

Pros

I like Duolingo because it is a great language learning tool. I used to learn to improve my French language when I was studying at the university. I like how it is free and so easy to use.
I don't have to spend any money on language classes due to this app. I also love its gaming format. It makes learning French and Spanish fun for me without the pressure of learning in a class.
I also like its compatibility with mobile devices. I open it on my android phone and take my lessons for the day irrespective of my location.
Also, its daily reminders help me stay committed to learning and not forget my learning tasks.

Cons

While Duolingo is a great language learning app, I find the pop-up ads a nuisance. Another thing I dislike about it is that it lacks the most important element for learning a language, which is; face to face interaction. That is crucial for learning your target language.
Also, I would not recommend Duolingo if you want to advance to a native level in your target language. I have finished all my French lessons on the app. Although my French improved tremendously, I am still far from being on the level of a native French speaker.

Jennifer
Overall rating
  • Industry: Primary/Secondary Education
  • Company size: Self Employed
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 2.0 /10

Spanish Scam

Reviewed on 2024/03/20

A bit frustrated as there are glitches and errors. Paying about of money I would expect more. They...

A bit frustrated as there are glitches and errors. Paying about of money I would expect more. They don’t focus on important things like verbs leaving you confused as you go further along.

Pros

Fun way to learn a new language. The challenges are fun but it is only fun if you pay. Otherwise it’s not enjoyable.

Cons

I was scammed into a free trial and they took my money out of my account before the trial was up. Duolingo would not reply and Apple would not refund.

Emirhan
Overall rating
  • Industry: Music
  • Company size: Self Employed
  • Used Weekly for 6-12 months
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 9.0 /10

Best way for learn easy language

Reviewed on 2022/06/17

The only application I use to reinforce foreign language learning

The only application I use to reinforce foreign language learning

Pros

I can learn a language at any time because I use it mobile. And the abundant practice and private lessons reinforce the learning.

Cons

Although it does not teach the foreign language completely, it provides a very good preliminary preparation.

Rutaba
Overall rating
  • Industry: Computer Software
  • Company size: 51–200 Employees
  • Used Daily for 1-5 months
  • Review Source

Overall rating

  • Ease of Use
  • Likelihood to recommend 10.0 /10

Best language learning app in the market

Reviewed on 2021/11/09

Great experience, learning and reinforcing so many new words, small achievements and shoutouts make...

Great experience, learning and reinforcing so many new words, small achievements and shoutouts make me feel good

Pros

You can see progress of friends, easily refer people, go back to lessons whenever more relevant, new talk conversation feature helps with verbal practice more

Cons

Free trial penalizes mistakes harshly, referral bonus doesn't always sync

Nicole
Nicole
Overall rating
  • Industry: Design
  • Company size: Self Employed
  • Used Weekly for 2+ years
  • Review Source

Overall rating

  • Ease of Use
  • Likelihood to recommend 9.0 /10

Great way to learn the basics of a new language

Reviewed on 2024/04/01

Pros

There's a great variety of languages available and I like that it offers a placement test if you're already a bit familiar with the language

Cons

Because I'm living in countries where I'm also learning the languages on Duolingo, I'm learning at a faster rate than the application and I find I eventually get bored at the level it put me at in the beginning as I've surpassed it with real-life learning and development. So I end up stop using the app. Would love to be offered a level placement reassessment for such cases.

Mohamed
Overall rating
  • Industry: Hospital & Health Care
  • Company size: 1,001–5,000 Employees
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 10.0 /10

Experience of learning

Reviewed on 2024/03/26

Very recommended for those who want to learn languages

Very recommended for those who want to learn languages

Pros

Eay and updated way of learning languages with good outcomes

Cons

This application is very nice not find any thing to comm6

Rita
Overall rating
  • Industry: Computer Software
  • Company size: 11–50 Employees
  • Used Daily for 1+ year
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 10.0 /10

Learnt more from Duolingo than I have from in person lessons

Reviewed on 2024/04/02

Pros

Duolingo is easy to use, engaging and fun. I've learnt a lot over the year of using it and genuinely look forward to going onto the app for the lessons!

Cons

notifications can get a bit intense but i also appreciate the constant reminder

Tess
Tess
Overall rating
  • Industry: Health, Wellness & Fitness
  • Company size: Self Employed
  • Used Daily for 1+ year
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 9.0 /10

Duolingo Review

Reviewed on 2024/03/04

Pros

I love the fact that I can learn simple basic language skills on my phone.

Cons

one has to go through many simple part before getting to the complex part of the language.

Anne
Overall rating
  • Industry: Marketing & Advertising
  • Company size: Self Employed
  • Used Daily for 6-12 months
  • Review Source

Overall rating

  • Ease of Use
  • Likelihood to recommend 10.0 /10

Best language learning app

Reviewed on 2021/04/29

Generally, i have had a great experience with Duolingo. I am actually still using it at the moment.

Generally, i have had a great experience with Duolingo. I am actually still using it at the moment.

Pros

What i like most about Duolingo is the fact that it is absolutely free and out of all the other language learning apps, it has the widest variety of languages to learn; 37 to be exact. I also like the simplicity of the app. It's so easy to use even for the most ordinary person. The way the app is designed with funny animations is so welcoming that you can actually look forward to learning a language. I also love the way the app is designed to encourage the learner to not give up even when he or she has made a number of errors. Duolingo recognizes that language learning is not easy and patience is a required virtue so when one feels like throwing in the towel, the app is there to remind you in some way that it may be challenging, but it will all be worth it in the end. With all the positive attributes that the app possesses, i believe it is a great and fun tool that can even be used by children and families not just for learning, but for spending leisure.

Cons

What i dislike about this software is the lack of option for learning offline. I think learning should not be limited to strong internet connection. If there is a way that the software can be adjusted just a bit to accommodate learners who have poor internet connection, that would be wonderful so that learning goals can be reached faster. When it comes to the ads, there are some ads that are displayed that make me feel uncomfortable even as an adult. For instance If i was using Duolingo in public and some of these ads are shown, then people can question my character and probably any other learner's character.

Shannon
Overall rating
  • Industry: Health, Wellness & Fitness
  • Company size: 51–200 Employees
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 10.0 /10

Learn new languages with ease

Reviewed on 2023/07/24

I have really enjoyed learning a new language with Duolingo, it made it accessible and fun and fit...

I have really enjoyed learning a new language with Duolingo, it made it accessible and fun and fit into my busy time table.I have completed one tree and now am starting a new language.

Pros

Easy to use with helpful reminders in a busy work schedule.Lessons can be short enough to do on your break or you can do multiple, this can be managed with goals of how much you want to achieve.

Cons

Some parts are repetitive and new ways to learn and be assessed would help with engagement and retention of people using the app.

Kimberly
Overall rating
  • Industry: Writing & Editing
  • Company size: Self Employed
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Likelihood to recommend 5.0 /10

Great for latin based languages, bad for others

Reviewed on 2022/12/21

Overall, duolingo is a fast and easy way to learn new languages. Only worth it, however, if you...

Overall, duolingo is a fast and easy way to learn new languages. Only worth it, however, if you stick with latin based languages. If you have a need or desire to learn something unique like Russian, Ukranian, Arabic, etc, I would steer clear and go with Babble or Rosetta Stone. You won't get far with the lack of a Cyrillic keyboard, for instance. The fact they do not offer this when other language learning companies do is a cop out. I should not have to install something extra on my phone or computer. I should not have to bounce out to a separate window to formulate my text in Russian and copy and paste it into duolingo. Makes it VERY difficult to learn. I am frustrated. This is a fix other companies provide. Rise up and be better.

Pros

Picking up a second language is really easy. The lessons are straight forward, and my Spanish has improved significantly from using duolingo.

Cons

If a language course is going to offer languages that use a non Latin based alphabet -- like Russian, for instance, they should include a Russian keyboard. Babble does this. the lack of this keyboard makes learning clunky if not impossible. I will be canceling my pro plan until they rectify this or switching to Babble where they take the time to do it right.

Alain
Overall rating
  • Industry: Writing & Editing
  • Company size: Self Employed
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 7.0 /10

Homework, homework, homework

Reviewed on 2022/05/26

My overall experience is good, but not excellent (some of the sentences are kind of weird and not...

My overall experience is good, but not excellent (some of the sentences are kind of weird and not very useful). But it’s a good way to gain confidence on your grammar when it comes to write in a different language.

Pros

I think there are not such a thing of too many tools to help us learn (or improve) languages, so it’s good news that we have apps like Duolingo, one of the best known by the way. And that’s for something. I feel like I’m carrying my English teacher in my pocket, I can do the homework literally everywhere and at my own pace. I think it’s especially useful for beginners or for the lowest level skills.

Cons

This app is convenient and easy to use, but I’m not sure if it’s the best way to gain fluency in a language. I’ve been trying to be proficient in English for a while now, and I find it helpful to learn grammar, writing and reading, but not as much to improve my listening or speaking. Nothing like practicing dialogues and conversation with native speakers to do so, these language apps won’t do miracles.

Gabija
Overall rating
  • Industry: E-Learning
  • Company size: 51–200 Employees
  • Used Weekly for 2+ years
  • Review Source

Overall rating

  • Ease of Use
  • Likelihood to recommend 9.0 /10

Looks like a game, although it works as a teaching plan!

Reviewed on 2021/11/13

I'm a happy user of Duolingo. I recommend it to my students. It's not possible to learn a language...

I'm a happy user of Duolingo. I recommend it to my students. It's not possible to learn a language entirely only using a Duolingo (well, that's not surprising), but it's way easier if a student uses it. I like their new features (podcasts, short stories). I would like to see improvements on machine translation and to see more customer support when users spot mistakes in the phrases.

Pros

It looks like a game - beautifully designed and user friendly;
there are new features now and then (podcasts, short stories, grammar comments, etc.);
constantly changing and adding new material or diving the old one in different chapters;
works both on phone and on desktop device;
easy to keep track of learning.

Cons

There is a feature of "streak" - how many days in a row have you used Duolingo and earned XPs (points). However, if one can't keep up with the streak, usually it ends up in losing motivation to learn after all. This is especially true for those who had 100-200 days of streak (well, I'm one of them!)

Some topics are devided into so many small classes that they become too repetitive and might seem boring.

Sometimes the phrases you need to translate make no sense at all ("my blu turtle wears black jeans" style of sentences). Also, Duolingo lacks flexibility in terms of machine translation - it simply doesn't accept different answers to the same question, although it should

Barbara
Overall rating
  • Industry: Hospital & Health Care
  • Company size: 1,001–5,000 Employees
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 0.0 /10

Bad update

Reviewed on 2022/11/20

I used to love it. I can understand some words on closed captioning on the TV before I read them....

I used to love it. I can understand some words on closed captioning on the TV before I read them. I can understand some words my Spanish coworkers use. They just need to slow down.,,as I don’t know all the words yet, but can grab the context of what they are saying. But now I will ever learn a new word as I can’t pass the previous levels I had mastered because they have extremely SHORT timers. They want you to PAY for timer boosts, they have gotten greedy and want money. I have sent feedback several times and have NEVER received an answer.me hence the review. If they would’ve at least contacted me and explained their reasoning..I may not have been so harsh., but seriously their update SUCKS

Pros

I used to love it. They updated it and have timed reviews to pass a level. I have to pass everything before I move on. I cannot move on with only one star. It BUGS me. You need three stars and they do NOT give you near enough time. I make so many mistakes rushing. I am about to drop the course

Cons

The lack of time to get the three stars

Barry
Overall rating
  • Industry: Construction
  • Company size: Self Employed
  • Used Daily for 1+ year
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 8.0 /10

Is there a cheaper, easier way to learn a foreign language?

Reviewed on 2023/04/24

Good experience. It's part game, part competition, and you learn a language along the way. You want...

Good experience. It's part game, part competition, and you learn a language along the way. You want to do it daily

Pros

I like that I can learn a foreign language (Spanish) that I've been wanting to learn for such a long time. This is better than the Spanish course I bought years ago that was Spanish as spoken in Spain. My Mexican friends heard that when I first bought it and started laughing. I didn't use that course again after that

Cons

There are different versions (dialects ?) of Spanish. I'm not sure sometimes if I'm learning the version of Spanish that would be most useful. I live in Texas and want to speak Spanish like I would hear in Mexico. I do want to know the common slang words, but be able to carry on a conversation like an intelligent person. (That's probably a lot to ask and walking a fine line).

André
André
Overall rating
  • Industry: Chemicals
  • Company size: 201–500 Employees
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 10.0 /10

A very good option to reinforce your language skills

Reviewed on 2021/04/15

As a brazilian trilingual person (I spoke portuguese, english and spanish), it is a way for keep my...

As a brazilian trilingual person (I spoke portuguese, english and spanish), it is a way for keep my language skills sharp, and also to learn about other languages. Nowdays I am learning japanese, and it has been a very good experience, I had contact with the language on the past, but even for a person which had not have it, the way which the App explain everything, is pretty easy and well guided. My mother is learning spanish using it, and it is awesome how she can talk with me and explain some complexes things using the skills which she learned through Duolingo.

Pros

The ease of use, the contents inside it, the exercises, the grammatic explanations are pretty good, also they have some "died languages", as latin, Irish, and some other dialects, which without this kind of technology would be tend to disappear.

Cons

Sometimes the exercises repeat so much, at point to make the user bored, but I know that some people learns with repetition. Therefore, I do not see so much advantage to choose the paid version of it.

Michael
Michael
Overall rating
  • Industry: E-Learning
  • Company size: 11–50 Employees
  • Used Weekly for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Likelihood to recommend 10.0 /10

A must have for anyone interested in language learning or teaching

Reviewed on 2021/03/30

Duolingo is a great app for whoever wants to learn, start learning or just stay engaged with the...

Duolingo is a great app for whoever wants to learn, start learning or just stay engaged with the languages they're interested in. I use it to learn Japanese and whenever I develop an interest for any language, Duolingo is the first app that comes to mind. I've used several other software to try to learn but I always come back to Duolingo.

Pros

I teach languages for a living and one of the biggest challenges was to gauge how much and exactly what the students know. With Duolingo my job became a lot easier with their Duolingo For Schools product. Duolingo already makes language learning fairly simple by avoiding to overcomplicate the learning process with dense grammar and leaning towards a more intuitive experience but when they introduced this new feature on top of that it only made my love for the app even deeper.

Cons

Duolingo is a very intuitive app but it falls short when it comes to certain features. For example: it's very difficult to set up Duolingo For Schools and in the mobile app there isn't even any button for it. The student has to go to the settings and look for it.
Also, Duolingo has features for some languages and not for others. I guess this is due to the time it takes to create content but until the day comes this will always feel like a downside.

chrys
Overall rating
  • Industry: Hospital & Health Care
  • Company size: 1,001–5,000 Employees
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Likelihood to recommend 10.0 /10

Duolingo -anyone can learn a language with 5-10 min lessons a day

Reviewed on 2022/06/29

I LOVE LOVE LOVE Duolingo. I started using it during the COVID19 pandemic, working to teach myself...

I LOVE LOVE LOVE Duolingo. I started using it during the COVID19 pandemic, working to teach myself Spanish. I use Spanish at work, and have previously always relied on interpreters. Within a couple of years of short daily lessons I now am able to have some decent use of the language.

Pros

I love that Duolingo offers short lessons, so it doesn't feel like a big time commitment. I love that it starts at your level, if you have previous knowledge of the language. I love that it adds an element of competition in language learning. Additionally, I love that it offers a free version, with few ads, but also offers a paid version (also great value for the money) for those that don't want to watch the ads

Cons

I honestly love Duolingo so much and have recommended to so many friends and co-workers, I cannot think of a disadvantage of this program.

Rafaele
Overall rating
  • Industry: Financial Services
  • Company size: 11–50 Employees
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 10.0 /10

Duolingo evaluation

Reviewed on 2021/08/30

Pros

Duolingo is an excellent app for language learning aid, easy to use, has several lessons and stages. It has a very beautiful layout, which helps us spend more time using it. Your trophy program is interesting to do more lessons and the app is always sending a message with your rating to encourage access and learnin

Cons

I believe that when taking the test to check the user's level, it would be interesting for him to show the eliminated units as completed, the duolingo even jumps, but it does not show the circle as fully filled. The activities also have to be redone in a short time for the circle to keep all filled, which ends up making us go back several times in the same lesson, hindering a little the evolution to other levels. A more specific unit focused on alphabets and numbers would also be nice.

Zakaria
Overall rating
  • Industry: Computer Hardware
  • Company size: Self Employed
  • Used Daily for 1+ year
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Customer Support
  • Likelihood to recommend 9.0 /10

that's why i use Duolingo to learn any language

Reviewed on 2022/04/22

overall experience, I would say that Duolingo has such great results, and everyone should use it.

overall experience, I would say that Duolingo has such great results, and everyone should use it.

Pros

Duolingo is a really common software to learn any language as a beginner, it has multiple versions, you can use it on your mobile, computer, tablet...

Duolingo is using great technics to make learning easy for you, there are audio exercises, short stories...Duolingo has a great rewarding system, to make you really motivated to learn, you can practice any language you want anytime and there are no limits, the thing that I really liked more,
that the app is always in touch with you and sends you notifications every day to remind you of your lessons, to be honest, the software is soo fun, I really enjoy it, and i use it most of my time.it has such a big impact on our lives.

Cons

the thing that i liked least, The ads.
I don't see that ads are a good idea, and i think that can be affecting people while learning and distract them.

Dorota
Overall rating
  • Industry: Renewables & Environment
  • Company size: 51–200 Employees
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Likelihood to recommend 9.0 /10

Great for getting familiar with a new language

Reviewed on 2023/09/21

I find it helpful to pick up the basics of a new language and don't feel completely lost in a...

I find it helpful to pick up the basics of a new language and don't feel completely lost in a foreign country!

Pros

It's a fun way to kick off learning a new language. The courses are well thought and the repetition helps to consolidate the knowledge. It has a very good design and is easy to use. The community aspect is also motivating.

Cons

The languages to learn are quite limited if my native language is not English. The progress tracking changed more than once which can be confusing. I also wish there were more in-depth explanations of some theoretical aspects.

Verified Reviewer
Overall rating
  • Industry: Higher Education
  • Company size: 501–1,000 Employees
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Ease of Use
  • Likelihood to recommend 10.0 /10

Great for Language Learning

Reviewed on 2022/03/12

I have been using Duolingo on and off since 2014. It has helped me learn couple of new languages...

I have been using Duolingo on and off since 2014. It has helped me learn couple of new languages and I use it to this day. I definitely recommend new language learners to install and use it.

Pros

Duolingo is a great tool to learn new language. Some of its best features are: abundance pf pictures to help the user learn even better, the stories that let the user interact with them, the weekly leaderboard that push the user to perform and learn even more, and many more.

Cons

The only thing I don't really like in Duolingo are the excessive ads that pop-up after every single lesson. It didn't use to be like that previously, but now it seems making money is the number priority instead of helping user learn new language (like it was originally). Other than that pretty decent software.

William
William
Overall rating
  • Industry: Publishing
  • Company size: Self Employed
  • Used Daily for 2+ years
  • Review Source

Overall rating

  • Value for Money
  • Ease of Use
  • Likelihood to recommend 10.0 /10

An inexpensive way to learn a new language

Reviewed on 2022/03/27

For almost two years, I have been studying Irish with Duolingo. To supplement this, I listen to...

For almost two years, I have been studying Irish with Duolingo. To supplement this, I listen to Irish radio online, and try to recognize as many words as I can. While I could only carry on a very basic conversation, my knowledge of the language is improving, despite only being about to devote about 15 minutes a day to it. I like the fact that I get a weekly progress report, which compares the past week to the previous week. I also like that Duolingo can send me reminders if I've forgotten to do my lesson each day.

Pros

I like the selection of language courses available, which includes endangered languages like Navajo and Hawaiian.

Cons

With some languages, most notably for me, Irish, it is not possible to slow down the spoken samples. Some of them can be very difficult for a learner to understand, as they are spoken at normal conversational speed.