Basic English Grammar – Find the 5 mistakes!

Basic English Grammar – Find the 5 mistakes!

Hi. My name is Rebecca. In today’s lesson,
you are going to have a chance to correct some errors in English grammar. I’ve written
some sentences on the board, and each of these sentences has some kind of English error.
It might be in verb tenses, it might be in prepositions, word order, or something else. Go
through the sentence, I’ll give you a little time to look at the sentence and try to find the
mistake, and then I’ll explain the mistake, okay? Let’s get started. First one: “I have met John last year.”
“I have met John last year.” There is an error in every
one of these sentences. Do you know what the error is in the first sentence?
Any idea? Think about it. Okay. I’m going to correct it now. The error is in this part.
Because we have said “last year”, we can’t use the present perfect tense. Right
now, when we said “I have met John last year.”, it’s the present perfect tense. With present
perfect tense you can’t use a finished time. So: finished time, as in “last year”. As soon as you
use something like “last year”, “yesterday”, “last month”, “last summer”, and so on; that
means you are talking about the past or even three hours ago, which is already the past, and
that’s a finished time. When you use present perfect, you cannot use a finished time marker.
You can use an unfinished time, like “today”, “this week”, “this month”, and “this year”,
but you can’t use a finished time. If you need to mention a finished time in a sentence,
then you just go back to use the past simple tense, as we’ve done right here. I’ve taken
out the “have”, and it says “I met John last year.” Now, that
sentence is grammatically correct. Let’s look at the next one: “She’s engaged with a dentist.”
“She’s engaged with a dentist.” Take a second. You have any idea where the error is? The error is here.
It’s the wrong preposition. The preposition should be: “She’s engaged to a dentist.” We
actually say “engaged to”, “married to”. Here, the problem was with the preposition. Next one: “I must to go home now.”
“I must to go home now.” What’s wrong there? Here is the error. The error is the
fact that we don’t need to say, “I must to go”, but just, “I must
go home now.” “I must go home now.” “Must” is a modal,
just like “should”, “could”, “can”, and so on. You should be saying,
“I should go home now.”, “I must go home now.”, “I could go home now.” With all these modals,
the verb that follows should be used directly and not in the infinitive form. We don’t need
to say “I must to do something.” “I must do something”, “I must go”, “I must study”, “I
must work”, and so on. That was the error here. Next one: “She’s been in London since 5 months.”
“She’s been in London since 5 months.” Take a second. What’s
the mistake there? Now the error is over here, because we cannot
say “since 5 months”. We use “since”, plus the point in time when something happened.
If you’re giving the length of time, or the period of time, then you have to use the preposition “for”.
This part is present perfect, that’s fine. Very often with present perfect, we
do see time prepositions, like “since” and “for”, but you have to learn
how to use them correctly. Next: “My wife engineer.”
“My wife engineer.” What’s wrong with that? Well, there’re
a couple of things wrong with that. First of all, in every English sentence,
it’s very important to know that you do need to have a verb, and this sentence has no verb.
The verb in English can also be the verb “to be”, because that is a verb, but you need some verb.
Every English sentence requires a verb, so we need to add a verb here. “My wife
is…” But now, because ‘engineer’ is only singular, it’s one person, we need to add the indefinite
article, “a”. But it’s not “a” because there is an “e” here, so we actually need to add “an”.
“My wife is an engineer.” So there are a couple of grammatical points to think about
in making this a correct sentence, right? First, we had to add the verb, “is”. Next, we
had to add an indefinite article. Normally, if it was something else, like a doctor, then we
would have just said “a doctor”, “a dentist”, but because the word starts with an
“e”, we need to say “an engineer”. To improve your English, you need to do these
kinds of exercises. Go to the RESOURCES section of our website, , and download a
list of 50 of the most common grammar errors that we have listed for you there. Good luck
with your English. Thanks for watching. Learn English for free


  • Letícia Belchior

    November 22, 2014

    I love this channel. Thanks, teacher!

  • Nam mai hoang

    December 14, 2014

    Thnks very much

  • abdel ali

    February 10, 2015

    Thank you  very much

  • Rajesh Pradhan

    March 6, 2015

    I have a big problem in english fluency because when I speak to someone I fell that my face is turning redness…so I really want to improve english …Please help me..

  • Nicolas Metz

    March 7, 2015

    got all correct

  • arjay2002ph

    July 5, 2015

    my weak points are the the following:
    correct word usage

  • mercy774

    July 31, 2015

    Do you teach via Skype? Am interested and would love to be part of it.I really enjoyed your teaching.

  • Eva EnglishOnSkype

    September 9, 2015

    Great excercise! I am an English teacher as well and I am definitely going to share it with my students 🙂

  • Bhawana Kumari

    September 12, 2015

    mam it awesome

  • Highlander Peace

    September 19, 2015

    thanks for teaching as well.

  • qoo6300

    September 29, 2015

    thank you for the lesson^_^

  • Isabella Ramaci

    October 18, 2015

    Thanks Rebeca for your help

  • Zeinab Awil

    October 23, 2015

    Thank you so much I need Teacher in online

  • Felix

    October 28, 2015

    I must say, engaged does Not mean in actuality an agreement to marriage.
    1). I find the conversation engaging.
    Engaging would mean be I am very attentive, or interested.
    2). It is an active, an occupation with time.
    a). Marta is engaged with the dentist.
    b). meaning her time is being occupied with this dentist.
    c). she made an appointment, a plan to meet with the dentist, and is not available to other plans.
    e.) she is having a procedure regarding her teeth. That has to do with oral health.
    "I'm sorry, Marta is engaged with the dentist", is an appropriate application and use of the word engaged.
    3). To assume a word that has meaning of time being occupied, in interest of business, or scheduling, or personal attention.
    4). I would be annoyed at a person who takes this word out of context.
    a). My clerk answers a call from a client, and says "I'm sorry Marta is currently engaged with a dentist."
    b) does this mean I Marta, is at the dentist's office discussing marriage, or making whoopie on the dental recliner chair!
    c).My husband is engaging, my interest is in our conversation.
    d). I have an engagement at a corporate finance meeting.
    (does that assume I'm there to find a husband to engage?)
    5). An engagement to marriage, denotes, interest, time, oral hygiene, beause we were kissing alot, and since were once engaged to be married, but legally consummated, I am looking forward to the business engagement, and would like to take my husband along, after all, we are engaged still, our interest in each other we find quite engaging!
    6). Or we WERE!
    Until you posted this simple vocabulary error, with The inference I'm I'm disloyal to my husband and lead a double life, with my dentist now, no more ring, no happiness, only sorrow, my Itinerary contained ENGAGEMENTS!! How many times you engage for this marriage, everyday!
    a) you have confused my foreign born Husband!
    b). I blame your poor judgement of vocabulary, upon you.
    c.) You will be sent the attorney fees for your loose speech, causing emotional harm, and the destruction of a blissful marriage.

  • L ryuzaki

    October 29, 2015

    Could i use "I must go to home now" ?

  • Mark Fermin

    December 22, 2015

    Thank you for the lesson!

  • Wagma Osman

    January 6, 2016

    You are so good , I love you my best teacher 😊

  • Karima Ouafir

    January 6, 2016

    you lesson is so helpful

  • Jct kakashi

    January 8, 2016

    very imformative thnks mam rebecca

  • Hussain Aun

    February 7, 2016


  • Mohd Hassan

    February 28, 2016

    very nice teaching

  • Dinesh Surya

    March 22, 2016

    Thank you very much!!

  • KseniaGata

    April 8, 2016

    What a good lesson! Thank you, Rebecca!

  • Aisha khan

    May 23, 2016


  • Aisha khan

    May 23, 2016


  • Easy Businessman Servises

    June 2, 2016

    thank you

  • leung mica

    June 4, 2016

    what a splendid lesson!

  • Nishant Dutt

    July 1, 2016

    thanks mam

  • Nishant Dutt

    July 1, 2016

    thanks mam

  • k d

    July 10, 2016

    how about, "I had met John last year." Is this not correct?

  • Dana Aziz

    September 15, 2016

    Thank you so much its a very good lesson

  • Carlos González

    November 11, 2016

    What about if I said 'she's been in London since 5 months AGO'

  • Moinuddin Bagasrawala

    November 15, 2016

    That last sentence gave me the creeps… My wife _______ engineer, is she enjoying with him? Could they possibly go out behind my back? 😂😂😂😂 but no, grammer says my wife should be an engineer 😜😁

  • music Phone

    December 14, 2016

    great teaching madam

  • Harsh Soni

    December 20, 2016

    editting ques. should be taught for stu.

  • the guy who doesn't get the joke

    December 23, 2016

    I honestly have no idea why I clicked on this video.

  • Yustika Annisa Ristania

    January 22, 2017

    this is really helpful for me. thank you!

  • sai saketh

    February 23, 2017

    Thank you mam

  • Venkatesh Naik

    March 1, 2017

    thank u so much Rebecca ,it's tempting me to see all ur videos
    It's really helpful
    best teacher in youtube

  • Dil Bhardwaj

    March 1, 2017

    in last it is also right or not – my wifr was an engineer

  • Dil Bhardwaj

    March 1, 2017

    hurry mam answer me

  • Yaser Humeid

    March 11, 2017

    I had met john last year.
    what is wrong if i used had and why?!


    March 12, 2017

    i understood very well

  • subramanian G

    March 14, 2017


  • Ryan Famisaran

    March 18, 2017

    thank you for the videos you made, it's actually helps me to become a good english teacher. I'm a sophomore going to junior 🙂

  • Gaurav raj rajdangi

    March 28, 2017

    nice teaching mam..

  • shubham singhal

    May 6, 2017

    Thank you so much teacher.

  • Diana Camargo

    May 21, 2017

    Hi, Dear Rebecca, thanks you for this video and by your time do it.!!!

    I have one question.

    ¿what time do you use in 4 sentence? why you use "IS" ?

    i use the present perfect

    She HAS been in London for 5 years. Spanish "Ella ha estado en Londres durante 5 años"

    Explain me this.! thank you…!

  • Monday Monster

    May 22, 2017

    finish X^D X^D X^D X^D

  • Monday Monster

    May 22, 2017


  • Monday Monster

    May 22, 2017

    6) People have the Internet at the seventies?

  • Ayshwarya n

    June 16, 2017

    U r not good teacher

  • Y moveis

    August 2, 2017

    So poor vedio…😝😝😝

  • Ghita Lah

    October 5, 2017

    Nice video thank you

  • koj omo

    October 12, 2017



    October 14, 2017

    My precise reason is….
    I learnt many high frequency words ( vocabulary) but I cannot use and make sentence articulate to read….
    So plz plz guide me…..

  • esmail

    October 20, 2017

    You are really an amazing teacher ever.
    Thank you so much for this lesson!

  • isma afzal

    October 31, 2017

    nice keep it up

  • Elias Obrsl

    January 3, 2018

    your videos really help people who are not native and don‘t really understand times or stuff like that, they‘re really informatic!! keep on doing😀

  • copperpaint

    February 10, 2018

    These were all glaringly obvious to me. I want to be a proofreader.

  • Sathya Raj

    March 8, 2018

    Thanks mam

  • Gilson Junior

    April 27, 2018

    Hi Rebecca ! Could you help with 4th question ? If I had used “since 5 months ago” will it be right ?


    April 29, 2018


  • Zahid Rabbani786

    June 7, 2018

    V nice

  • nor0ni

    July 11, 2018

    It is still difficult to me to choose the right tense. I can't decide what I should use in a particular case: Present Perfect or Past Simple. You have 12 tenses! TWELVE! You English speakers must be living in your own Universe. In Russian we have only 3 tenses: Present, Past and Future, no more, no less, it's enough, isn't it? Also we have no articles, that's why this is the most difficult issues for us in English studying. Oh I forgot to mention (or "have forgotten"?) prepositions (or "THE prepositions"?). This grammatical unit is so… unpredictable in use, you cannot simply translate them from your first language, you just have to memorize them, in addition there is no strict rules in the use of prepositions. In Russian we say "it depends FROM you", but in English it's incorrect, you say "it depends ON you" and so on and so on…

  • Karm Sidhu

    August 7, 2018

    Thanks mam

  • أحمد علي

    August 13, 2018

    But in English,we say been to not been in.

  • Md. Zahidul Islam

    August 15, 2018

    Nice class

  • Maria Makinen

    August 23, 2018

    Me neither. Done these…

  • Kajeen issa

    August 29, 2018

    İ really think it is hard to find

  • Waqas Saeed

    September 10, 2018

    I went through the 50 Mistakes Quiz. It was very helpful. Everyone must practice what he learns. Otherwise it is waste of time if that is forgotten.

  • angel alexzander

    September 13, 2018

    I enjoy watching “find the error videos.”

  • Tullochgorum

    October 14, 2018

    Hmm – there's research that suggests rather strongly that learning from errors is a poor strategy. The brain is very likely to remember the wrong pattern rather than the corrected version. Better to learn from correct language, I think.

  • William Roberts

    October 24, 2018

    Excuse me, but your colleague Anna said “ We should write the single numbers by letters. “
    So it should be “ She’s been in London for five months. “ Not “ She’s been in London for 5 months, if I may say.

  • Faizur Rahman Choudhury

    October 29, 2018

    Mam, I am confused. I don't know when to use for and since. Can u please clear my doubt.

  • tia satriani

    November 8, 2018

    I need more

  • Saleheenkhan Feroz

    November 15, 2018

    thanks for online teaching me i am student of class 5

  • Manoj Jayawardena

    November 21, 2018

    Thanks. Really important

  • Creativity king

    November 27, 2018

    Rebecca mam omitted "to" in 3rd sentence and transferred it to the upper on

  • Mutombo Mukandilafrancy

    December 12, 2018

    Thanks mom

  • Kalyan Singh Jaral Jaipuria

    December 12, 2018


  • chakri malla

    December 17, 2018

    Mam in second sentence in the place of dentist we use name for dt time also we use to before there

  • Manish paswan

    December 30, 2018

    Super mam


    January 4, 2019

    I was seeing comment

    Title in Hindi but why aren't you

  • Venkat rahava.v

    January 4, 2019

    Thanks madam

  • Guilherme Sobrinho

    January 5, 2019

    Dear Rebecca, thanks for sharing with us your expertise. Folks, does any of you know a good grammar textbook used by native English speakers?

  • ஆளப்போரான் தமிழன்

    January 12, 2019

    You are a fantastic teacher.

  • Rana Kanaan

    January 19, 2019

    I like you ,nice teaching .

  • Amira Honey

    January 31, 2019


  • Shakti Pande

    February 21, 2019

    Thanks Rebecca Ma'am.

  • natalee martin

    March 9, 2019

    Thank you Rebecca for teaching us.

  • Mrs Malik

    March 23, 2019


  • sujitha .g

    March 27, 2019

    Your teaching is awesome


    May 21, 2019

    I really liked your video as you possess perfect calmness to teach without any dramatic effects.
    Thank you

  • Mubarak Syed

    May 22, 2019

    Your teaching is fantastic mam,i want to marry with anushka,is this sentence correct mam

  • Giti Shirasb

    July 3, 2019

    It was perfect, I love you so much

  • Anne De Silva

    July 14, 2019

    I am from srilanka.I love your teaching.💐💜💜💜

  • Aboubakar Ibrahim

    July 17, 2019

    You are the best teacher in world 🌍

  • Mrs. English .

    August 5, 2019

    I got all correct but about 4 lknow that it should be have been to not in thanks alot

  • Harikachandra Yadav

    August 8, 2019

    Upload more videos for learning grammar mam.


Leave a Reply