Hey friends, I'm back with a new lesson. Well, has anyone ever told you, you must speak
good English? You must speak correct English. Knowing English is a must? I am sure you've
heard these structures. Must, must and must. And sometimes it is confusing what must is
all about, okay. So, today's lesson we are going to learn ow to use must.
Well, let,'s understand one thing, must is a modal verb, okay. So, it can never come alone. It has
to be followed by another verb or maybe tow verbs, okay. And it has different meanings
depending on how it is used in a sentence, okay. So let's get started. The first one,
I must finish the work before I leave. Now, when I say I must finish it means that something
Imust do, I have to do. I am putting an obligation on myself. Okay. So supposing you are on a
diet and you know someone offers you a piece of cake then you refuse and say 'no thank
you' and people say 'atleast try it, it's nice' and you say 'No. I've gained alot of
weight, I must go on a diet.' Something that you are
obliging yourself to do. You have to do. It is necessary for you to do it. So, you say
I must go on a diet or I must take my diet very seriously,okay.
So remember when you talk about an obligation, sometimea something is very necessary. Well,
sometimes you can even interchange it with have to, okay. Like, i have to finish my work.
But, when you put an obligation on yourself, the speaker puts an obligation on himself,
it is always better to use most. It is a strong obligation, okay. The next sentence, this
must be the correct address. Now, supposing you are searching for your friend's new apartment
amd you've, you're close to it, your almost there and you jusg kinda gauge you know this
must be the correct one. I think we've reached the place. This must be. Now, this does not
that it has to be the correct one. It's a logical certainty. Okay. So imagine you have
kids at home and you have a nanny coming home every morning and at sharp 9 she rings your
door bell, okay, so today it's, now it's 9'O clock, the door bell rings and you may just
say that must be the nanny, okay. That means a certainty. So when you talk about something
that is certain, a logical certainty, you use the word 'must'. Now, here againnit does
not mean an obligation or a strong recommendation, it's just a certainty, okay. Or supposing
a friend of urs is injured and bleeding, and you say you must be in so much pain, that
doesn't mean he has to be in pain, it is just a logical certainty, he's bleeding so obviously,
certainly he must be in so much pain, okay. So you also use it when you want to say something
is of certainty, okay. The next example, you must visit the dentist. Now, something that
we, all of us, we don't like to go to the dentist but having said that we have no option,okay
. So if your friend has a bad toothache and has been bearing it for a couple of days with
all the pain killers possible, and well you tell him now, you must visit the dentist.
A strong recommendation you give a friend or something that well, he should do. Okay.
So you must visit the dentist, okay Well, I'm gonna tell you, you must subscribe
to our channel. You must watch all our videos. Okay. A strong recommendation. The next example,
she must not use abusive language. Now, I'm taking it in the negative. She must not use
abuse language. Something that you should not do, that is not correct to do or something
that is prohibited. Okay. So you have all the mothers telling their children, you must
not leave your homework incomplete. You are prohibited from doing it,so you better do
your homewoek. A prohibition-must not, okay. Fine, the next example, you must not play
with fire. Okay. A prohibition, you're pro prohibited from playing with fire. So remember
when you use must not or rather when you put must in the negative, it is generally a prohibition
or something that you must just not do, Okay? You are prohibited from doing, okay. Now so
far these are sentences in the present, okay. You have must followed by the verb in the
first form. In the present form you have must finish, must be, must visit, must not use,
must not play. Well, if I tell you, uh, you must wake up early everyday,that means something
that is a must, a strong recommendation, you must do it. But, if I want to take it in the
past tense, in the simple past tense, remember 'must' does not have a past form like you
have becomes had, speak becomes spoke, can becomes could, right? So must does not have
a past form. What we is use is 'had to' with the verb in the first form. So, I had to wake
up early. This is the past form of must, okay. So, I must wake up early, a strong recommendation,
something that I must do regularly. But, if I wanna tell you last, I mean yeterday, last
week I had to wake up early so it's the past of must. I had to wake up. So remember had
to with the verb in the first form is used. So had to is the past of must. Okay friends,
I hope these examples are clear to you. Now we are going to take a look at how to use
must in questions and with the past participle. Okay, so how do you use questions using must.
You must go. All you need to do is remove must here and must you go? Now well, you maybe
thinking we have not heard something like this or maybe people don't use it. Yes, you
are correct. People barely use this in the question form. You can use have to like this.
So, do you have to go? Okay. So must you go, have to is more common,okay. So well if you
say do you have to go? It is correct, okay. So the next example, must we watch this film?
This is not correct. It is correct. You can use the question with must. But a lot of people
prefer have to. Do we have to watch? Okay. So, you can use it to make a question regarding
must, okay. If you don't wanna put must in a question, you can use have to, okay. Now,
using must with a past participle. If I say he must have gone to the party, okay. Now
first of all remember, we are talking about something in the you're not sure. So last
night he must have gone to the party. Must have gone to the party- a past probability,
a probability, you're not 100% sure. Well, there was a probability he must have gone
to the party. But remember, it's in the past. Okay. So well uh you have he must have gone.
Do not say he must haa gone, that is incorrect. After must you always have the verb in the
original form. So he must have gone to the party. Probability, not sure, a past probability.
Okay. The next one, she must have found the keys. Well, you're not sure how did she enter
the house. I'm not sure. Well she must have found her keys, a past probability. Oaky.
So remember when you use must with the past participle, must have gone, must have found,
must have done, must have met, it is a past probability, it is not sure, but yes, there
is a probability. Okay, now let's take a look at the next one. Speaking English is a must.
Now, must is not used as a verb here, it is a noun, it'a good as, speaking English is
a necessity. Okay, it's a must. Okay, so the ver here is is, must becomes a noun. So when
you want to say something is a necessity, you say, speaking English is a must. Okay
well the last one, wearing a helmet while riding is a must, ya. Is that it is a necessity,
you have to, it's a must. So sometimes when you want to say something is a necessity , you
use must in the form of a noun by saying this, something is a must, okay. Speaking English
is a must. Uh, dressing well is a must. Being confident in an interview is a must,okay.
It's a necessity, you have to be confident so it's a must, it's a necessity. Okay friends.
Well, this brings me to the end of this lesson. I hope you enjoyed watching the lesson. You
must put in your comments and queries. I'll be back soon with a new lesson, till then
take care and bye.