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Test your understanding of the English lesson by answering these questions. You will get the answers and your score at the end of the quiz.

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Well done. You really exert yourself to give good explanation to us. The quiz is also well made. I think I will remember the key points of this lesson.

Profile photo of liberator liberator

It was a great video! Congratulations to this site and thank you so much for these videos!


I got 9 correct out of 10.

So thank you so much and keep your good job.

Profile photo of imansour imansour

helpful topic thank u Adam.

Efrain Dominguez

Hi,there am really enjoy learning English


I liked this lesson. Thanks teacher


Hi Adam, I like watching your lessons. You are really good instructor. thank you.

Profile photo of ariunbolor ariunbolor

Thank you Adam!
This video was amazing.
Hugs from Brazil.

Lucas Ferreira

Thank you Adam!
This video was amazing.
Hugs from Brazil.

Profile photo of lucasferreira lucasferreira

Hi Mr. Adam,

I have a question,
what differences between
guaranty ( noun) & guarantee (Noun & verb )
warranty ( Noun & verb) & warrantee (Noun)
Thanks your wonderful lessons

Profile photo of il0vejames il0vejames

    I found this:

    So, if I well understood, “warrantee” and “warranty” are different words, but “warranty” is misspelled and that’s why we get “warrantee” while we should use “warranty”.

    And “guaranty” is used as a noun and has plural form “guaranties”, and “guarantee” is used as a verb mostly, but people are more likely to use “guarantee” either as a noun or as a verb.

    Profile photo of morfik morfik

    Hi Lu Lu,

    Good questions. First, warrantee is the person who receives the warranty (like employee receives employment). Guaranty is something a person gives to guarantee something. For example, if I want to rent an apartment in a foreign country, I’ll probably need a guarantor, a person who will guarantee that I pay my rent. The guaranty this person will provide is usually his/her bank info and consent to cover my costs if I run away from the country without paying.

    Does that help?

    Profile photo of Adam Adam

      It really helped Mr. Adam. Thank you!

      Igor Brazil

      Thank you Mr.adam




It’s very instructive,wonderful! thanks

Profile photo of andrew andrew

Nice lesson ! Thanks so much Mr. Adam !

Profile photo of bilel bilel

Thanks a lot Adam it is very clear for me the meaning of the lesson your a good instructor… well done i got 8 correct out of 10. MABUHAY KA…


Nice lesson. I doesn’t knew this rebate procedure. In my country send money through mail is a little weird. But very interesting that lesson Adam, very intelligible and didactically.

Diego Brito

Very good lesson. Thank Mr. Adam.

Cuong Vietnam

hi i dont know why i cant see the quiz .i use a proxy .there is not like that before!why ???


I am back to ENGVID! I love it!

Profile photo of Sally S Sally S

    I love EngVid so much!

    Profile photo of yankhonskiy yankhonskiy




      Profile photo of fatiima fatiima

      Me too:)

      Profile photo of stephen lee stephen lee

thanks adam!!

Profile photo of berenice55 berenice55

Hi, good lesson! Thanks.

Profile photo of zulay zulay

I got 10/10.
Thanks Mr Adam.

Profile photo of Ahmad Al-Haj Ahmad Al-Haj

it’s strange. i didn’t choose the picture… it’s not my face )))


    If you don’t have an account, you get a random picture. To choose your own picture, sign up for an account; the link is at the top right of the page!

    Profile photo of engVid Moderator engVid Moderator

Hi Mr.Adam
what is the difference between refund & rebound


Profile photo of khalidindo khalidindo

    Hi Khalidindo,

    These words aren’t actually related. ‘rebound’ means to bounce back, usually about something physical, or sometimes we talk about someone failing but then rebounding and being successful. ‘refund’ means getting money back that you had already spent.

    Is that clear?

    Profile photo of Adam Adam

      yes,thanks Adam

      Profile photo of khalidindo khalidindo

Thank you Adam for usefull lesson.


Thanks Adam. You’re very good!! This video was really helpful!


I don’t know how to express my great thanks.




thx a lot Adam very useful lesson .

Profile photo of libyano libyano

The lesson is very useful and simple. Thanks so much, Mr. Adam ^_^

Profile photo of smiling smiling

I got 100

Thank you adam. Your accent is good. I can understand anything.

Profile photo of pranav9061 pranav9061

    I hope that you can understand everything :)

    Profile photo of Adam Adam

Adam ,You are born to be a teacher .
Thank You

Profile photo of mieto1969 mieto1969

Adam, keep teaching us, please. I appreciate it.

Profile photo of ramoncarrasco ramoncarrasco

I got 100%!!! First class with Adam, I like it! Very good teacher!

Profile photo of Sally S Sally S

Mr.Adam super thanks for you

it helped me a lot


I’ve got 70pts

slc hoi bat chuyen

Great lesson Adam. It’s very useful

Profile photo of flegui flegui

Thank you


thank you teacher the lesson is good


Good lesson and exercise. I’ve got 10 points and deep understanding of these words.


Thank you. It is the first time I see the difference between guarantee and waranty. It is very useful.


Very good!I’ve got 8 correct points. Thank you.


Thank you so much it’s really work and I love it


yes good for learner I hope I will be improve my english vocabulary very soon.


hi adems i got only 50 from 100 i cant recogonice this words please give me egsampels


thanx adam nice lesson . i enjoyed it . plz slow down ur speed while speaking. because we are not english native speakers and we do have some listening problems , and sometime we have got problems in getting ur lecture. hoe u wo’nt mind


    I’ll do my best :)

    Profile photo of Adam Adam

Thank you!!


Thank you Mr.adam I really like the Engvid work team and there why in teaching us the english language
my best wishes to you

Profile photo of emadnouh emadnouh

This lesson is so good. Thanks for it Adam.

I would like to pratices my english and i’m looking for someone who want too.
We can do it by the skype.
it’s mine skype is:Clayton.Grilo search me there if you want to pratices also.

Profile photo of cgrilo81 cgrilo81

I got 8 correct out of 10.Thank you very much.

Profile photo of ericlai28 ericlai28

would you please tell me what is transformation-generative grammer
please define its all accpects


    Hi Mahdi,

    Transformational generative grammar is a theory that can’t be explained in a few words. This would be an essay for linguistics students, not real everyday grammar for ESL/EFL students. There is a lot of info online though.

    Good luck :)

    Profile photo of Adam Adam

Thank u :-)


thmks so much Adam but it confused sort of .

Profile photo of asala asala

    It will get easier Asala, promise :)

    Profile photo of Adam Adam

It is really useful website . thank u a lot for highlighting sales vocab .

Love life

thank you it is so useful

Profile photo of sameerford sameerford

WOW Adam, your lessons are fantastic !!!

Thanks a lot :)

Cris Ribeiro

Dear Sir ..It was very useful lesson !!! Thanks a lot

Profile photo of vilayphone99 vilayphone99

Thank you Adam, great class!!

Profile photo of ilfabri1966 ilfabri1966

My satisfaction always guaranteed with Eng-vid

Profile photo of nawaif nawaif

thank you!


many thanls


sorry many thanks


i got very good idea about these words you have taught in this video.thanks lot .and my all questions regarding this video is correct..


Dear Mr.Adam,
i really love ur way of teaching english, u r the best.
i loved u so very much, please allow me to say that. FROM KSA

english teacher

add me on skype i just want to learn more from u, u r great teacher
this iz my account marwa.marwa5737

english teacher


anil rajpoot

hi adam good


Thank you Adam


Hi Adam
When do we use redeem?

Profile photo of rilomo rilomo

    Hi Phoenicia,

    Good word. To redeem basically means to collect on something. For example, if you have a coupon for a product, let’s say 50% off, you can redeem it at the time of the purchase. This means that you can collect your discount then. Another way to think of it is ‘make use of’ a coupon, or rebate, etc.

    Does that help?

    Profile photo of Adam Adam

      Yes it does.
      Thank you

      Profile photo of rilomo rilomo

I like your teaching very much because you speak slowly, clearly and have good examples.
It’s easy to understand.


I got 8 correct out of 20. I was not sure about Rebate, it is actually a discount.


Thank you Adam! That’s great! Please, make more lessons on business vocabulary

Profile photo of caesar28 caesar28

Thank you Adam


Great lesson .Thank you Adam

Profile photo of momen22 momen22

Adam, could you please make a vid about usage of “if” and “unless”?

Profile photo of morfik morfik

    Hi Morfik,

    That’s a good idea. For now though, remember that unless basically means ‘if not…’. I’ll see what can do soon.


    Profile photo of Adam Adam

I have scored 10 out of 10 thank you teacher Adam.

Profile photo of becoca becoca

Great lesson. Thank you.

Profile photo of valdene valdene

i am interrested on it >
thanks Adam

hamza ali

100 I got 10 correct out of 10.


This is a good teaching. I really like this


many thanks Adam. you made it so easily

moha 3 ms

It was a great video! Thanks so much.

Ubiracy Mafra

What a great job you did! I really love the way you explain it and your accent is easy to understand. It’s really useful to me.


It was nice video …I have learned very much


thanks alot


Thanks a lot!


thanks Adam


Thank you Adam!!!You are super instructor!!!


thank you:)


Verey good it is verey intersting lessone and good teaching


thank you , that was very helpful


Thanks everyone.


Profile photo of Adam Adam

Thank you. :)

Profile photo of willdinh willdinh

Thanks alot

Profile photo of rizofpicic rizofpicic

hello Adam could you tell me please what is the dfference between avoid and escape

Profile photo of nasimi nasimi

thank you very much, excelent lesson


Thank you Mr. Adam. It was an applicable lesson.


Great lesson, thanks !

Profile photo of glmrenard glmrenard

hm 6/10

Profile photo of nazren nazren


Profile photo of naima10 naima10

Great teaching. Thank you so much for your very explicit instruction.


I didn’t know the difference between Warranty, and Guarantee. Now, I do, thank you Adam!

Profile photo of poslegg poslegg

I got 10/10, thanks Adam!!!


nice thanks


Hi, thank you


Thanks Adam

Profile photo of anass1981 anass1981

Thanks a lot Adam!


Thanks a lot

Profile photo of shimaalex shimaalex

HAPPY NEW YEAR !!!!!!!!!!!!!!!!!!!!!!!


Adam, you’re the guy!
I always appreciate your lessons.


I really get a lot of usefull tips about english and for competetions.In this quiz i got 10/10

Manish Tiwari

It was really good lesson , thank you ! I think that your speaking is understandable.I understood everything i mean that we should be ready for an real conversation. Is not only question of understanding we are supposed to use this lenguage in the street and if we are not prepared to follow the speach quickly it’s gonna be an failed conversation. My recomendation is to listen how much is possible , that’s the right way of learning other lenguage. Thank you again , cas you help me a lot :)


Thanks for the lesson


Wonderful lessons, in our daily life we are using these words; without knowing the meanings. Thanks a lot Adam, my full family is daily attending your class. We can easily understand your pronunciation.

Anil Kumar Nair

teacr tnank yu a lot…yure the best!!!!!!


Very useful, I used to work as a sales assistant and I said these words about 3.000 thousand times!!!. People gets confuse about the meaning of these words, so well done!.

Profile photo of asier asier

I got 90% :( , I hope do better next class
thanks teacher :)


It’s amazing. Thank you very much for the clarity of teaching n explanation. I can distinguish the differences now……


I got 8. Thank you! I learned a lot.


i do love your lessons,


Thank you a lot

Profile photo of simegne46 simegne46

Hi Adam,
nice lesson, but i faced a problem on question 8
why we can’t use guarantee instead of warranty dealing with software and hardware as electronics???

Profile photo of nadaballa nadaballa

I am really happy to gain D of this a bit difficult quiz about x-year warranty , low price guarantee , full money refund , mail-in debate , be allow to exchange other item in our stores , in-store credit etc. You are really excellent at teaching. You always point out the purpose and sample of use to us clearly and concisely. I love your lessons.

Profile photo of stupor67 stupor67

awesome lesson! if you happen to come to South America, be my guest in my home! it will be a pleasure to host a nice person like you!

Profile photo of marcos905 marcos905

Thank you teacher Adam. Very great lesson, keep doing the best.

Profile photo of locdy locdy

Thank teacher a lot

Profile photo of nguyencamngan nguyencamngan

hi teachers,please give us a lesson about past tenses please.its so difficult to use them correctly

Profile photo of gulinad gulinad

Cool : )

Profile photo of anzwa anzwa

Thank you very much Adam!!

Profile photo of spous67 spous67

Thank you Adam, I got correct 9.

Profile photo of alpido24 alpido24

awesome explanation…..//

Profile photo of dksoni dksoni

yayyyyy i got 90 thank you a lot adam

Profile photo of ashliy ashliy

thx adam:D

Profile photo of stephen lee stephen lee

Yeah!I got correct 10:)

Profile photo of stephen lee stephen lee

Really useful, continue please

Profile photo of oposjr oposjr

thanks a lot

Profile photo of daacad12 daacad12

I got 6 correct out of 10. I was confused and forgot the meanings and differences. But the quiz is really helpful for me to understand or not. I hope to watch your lesson and answer the quiz again someday. Thank you, Adam :)

Profile photo of Happy04 Happy04

Thanks, Mr Adam

Profile photo of ghazal10 ghazal10

make some sentences using “WARRANTY, GUARANTEE, REBATE, EXCHANGE, CREDIT”:

I bought a Toyota sedan with 3 years warranty or 100,000 km warranty last month and I satisfied their service in workshop. They gave me a guaranty to exchange if the car have any problem and will give credits using in workshop. But the bad thing is that I didn’t pay attention to return the form for the rebate of $500. It’s over due for that right now.

Profile photo of lilyev lilyev

hi adam, i am just wondering, how can we actually put these words into real practice?

Profile photo of Jimmy Jiang Jimmy Jiang

Thank you teacher. Your lesson explain very clear and helpful. I like to watch your video so much.

Profile photo of trangpnguyen trangpnguyen

It’s always good to learn new vocabulary. You’re a great teacher Adam thank you!

Profile photo of buyeromanya buyeromanya

Thanks I got 70%.

Profile photo of Abdul Qayum Abdul Qayum

60% WITHOUT watch the lecture ..

Profile photo of Mr. Fuchs Mr. Fuchs

Thanks a lot mr adam.

Profile photo of rarachan rarachan

your presentations are very attractive

Profile photo of damsith damsith

Hello Adam! Thank you for the very useful lesson and vocab. I really surprised with this vendor’s gimmicks :)

Profile photo of Evgenija Evgenija

Thanks a lot Mr.Adam…it helped a lot…scored 10/10…surprisingly..:P
never understood economics terms …

Profile photo of Jahanvi Agrawal Jahanvi Agrawal

Thank you! Very useful lesson

Profile photo of Lara73 Lara73

Really fabulous explanation! thank you Adam

Profile photo of doudi doudi

Please, I need a grammar lesson about “Question Tags”.

Profile photo of Yahya05sy Yahya05sy

thanks for that lesson teacher Adam…I got 10 correct answers out of 10…=)i could use this to improve my vocabulary…=)

Profile photo of cez527 cez527

Thank you so much. I always follow you lessons; It’s very helpful for me. Misspelling is always be my main problem, thanks so much for reminding. :) :)

Profile photo of Tansine Tansine

100% thanks

Profile photo of juny729 juny729

Thanks adam

Profile photo of aboood1994 aboood1994

9-10 yes Not Bad..

Profile photo of alvin flores alvin flores

Now I understand. Thank you Adam.
You are great! Funny! and I like your lessons!

Profile photo of Demosa Demosa


Profile photo of Ravinath Ravinath

Execllent lesson for me because I am woring in retail.
we use this words daily ,good to know correct meaning of each words.I got 10/10.Thank you very much.

Profile photo of sri sri

Hi there ! Sir Adam I want to know between. Could and can sometime I get confused between this tow model. Is my sentence correct also ?

Profile photo of Habib zean Habib zean

Thanks! Mr.Adam,
I got 9 out of 10.
I do like your lessons.

Profile photo of Lucivan Lucivan

Thank you Adam, Very useful lesson. Would you please do a lesson about business e-mails. thanks again.

Profile photo of Catalin Octavian Catalin Octavian

Very good explanation!

Profile photo of Engenheira Juliana Engenheira Juliana

Thanks Adam

Profile photo of Mohsen Barati Mohsen Barati

8.0 my score….it is not bad.
this topic is clear and good explanation.
thanks Adam.

Profile photo of Patico Patico

Good job Adam. Next lesson right off the bat jajaja

Profile photo of DavidRubio DavidRubio


Profile photo of musabali musabali

Dear Mr Adam, Thank you so much for this lesson.I am wonder how different between freedoom and liberty ? Can you help me ?Thank you.

Profile photo of ngockhanh ngockhanh

Thank you Adam.

Profile photo of Jean-Michel.M Jean-Michel.M

Dear teacher,
What is the difference between trade and commerce?
By the way, i am living in Hanoi – Vietnam so i would like to ask you a question related to our money. In VN we use Dongs as a main money. But there are many way when we write it in words: someone writes VND, it means Vietnamese Dong or Vietnam Dong? It also means that VN is adjective and Dong is a noun, right? Which one is right and which one is wrong?
Furthermore, AUD means Australian Dollar, CAD: Canadian Dollar, Bristish pound…
Otherwise/in the other hand, USD means United States Dollar instead American Dollar? or Singapore Dollar but Singaporean Dollar? and so on.
Oh, they make me confused.
I look forward to hearing from you.
Thank you so much.
Love you Adam.
Could you please help me to find out the answer?

Profile photo of Sophia Hoang Sophia Hoang

    hello. I’m not professional in English, but I can answer your question just a little bit
    1. VND= Vietnamese Dong or Vietnam Dong?
    I think it will be the same question as ‘Japanese Yen of Japan yen’. In Japan, the official name is Japanese Yen.
    Like that, the official name of Vietnam money is Vietnamese dong.
    Also I just searched in the internet about CAD AUD….
    what you wrote is all right except British pound. British pound, we call, GBP(Great Britian and blahblahblah(I don’t know exactly about the name but it will be related to British territory) Pound. In short, it is written in GBP.
    2. USD means United States Dollars. It is official name. But I didn’t heard someone who said like ‘Amercian dollars. They just speak dollar, or anything else.
    3. Singapore’s official currency name is Singapore dollar not the Singaporean Dollar.

    tips) If you find about Korean currency, you can find KRW, Korena won. Not the Korea won.

    I hope this answer will be satisfied^^

    Profile photo of adun adun

i still don’t know the difference between exchange and credit

Profile photo of Mohamed Rabiaa Mohamed Rabiaa

    understand like this

    exchange : products to products

    credit : credit card

    That will be easy to remember

    Profile photo of adun adun

i still don’t understand the different between warranty and warrantee

Profile photo of safakhalid8 safakhalid8

When I listen to you carefully I make it 10/10 🤗
Thank you so much you are an amazing teacher

Profile photo of emell emell

It is interesting! Thank you Adam.

Profile photo of dieutam dieutam

i’ve got 10 of 10. Thanks for this video. Keep trying!

Profile photo of jackiedo jackiedo

Hi, Adam. I would like to ask about some words I saw on an advertisement.
What does “dealer’s discount” mean? What about “ the trade discount”?

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Profile photo of Belisiario Belisiario

Thanks Adam for this lesson.

Profile photo of S Chit Chit Win S Chit Chit Win

thanks, Adam I got 8 out of 10

Profile photo of mohamedspor2020 mohamedspor2020

Thank you Mr. Adam.

Profile photo of Alex-1956 Alex-1956

sometimes I can’t catch up what teacher Adam teach. Because too shot explain & no writing just explain by mouth . For me, it’s better Adam more explain writing note rather than speaking. It really helps for new beginner student like me to take some notes.TQ

Profile photo of Idzika Idzika

Congratulations Adam, I really liked it. Very useful this class!

Profile photo of edi wilson edi wilson

I got 100, thanks Adam I´m new student

Profile photo of oz0711 oz0711

8/10! I also confuse on warranty and guarantee.

Profile photo of Jerry Gu Jerry Gu

i really appreciate your way of teaching.keep it up!

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