🔥 EXPLAINED! Must v Have To v Should (🔗 FREE pdf Worksheet)

Guess what... "Must" and "Have to" DO NOT always mean the same thing! 😱 Watch this video to find out when to use which one, and when we need to use "Should" instead!
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⭐️ [WATCH NEXT]
🔥 Modal Verbs | MUST WILL SHOULD MAY MIGHT COULD CAN'T WON'T

🔥 Crazy Confusing English Tenses (Playlist)

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► CHAPTERS:
00:00 Different ways to use MUST and HAVE TO
01:37 Must and Have To | Obligation, Present Tense
4:22 Must and Have To | Obligation, Past Tense
6:16 Common Mistake Using Must
6:56 Must and Have To | Probability, Present Tense
9:54 Must and Have To | Probability, Past Tense
12:39 Should in the Present and Past Tense

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► TRANSCRIPTION
If you think must and have to are practically the same thing, you are wrong. And this is why.

Now, great news! This lesson comes with a free PDF worksheet. So click up there, or click the link in the description and you can download my lesson notes on this video. It comes with all the explanations, all the examples and a test to test your knowledge on the difference between must and have to.

We use both these verbs to talk about obligation, like you must do your homework or you have to do your homework. And also probability. Like wow, she got 100% on her exam, she must be clever. So sometimes these mean almost the same thing, like you must do your homework, you have to do your homework. But sometimes they don't and they mean very different things. So to help me explain this category, which most students get confused with, I'm going to divide the lesson into five parts.

First we'll look at obligation in the present tense, and then obligation in the past tense, then probability in the present, probability in the past. And we cannot learn this topic without looking at topic number five, how to use should. So let's go.

We can use both must and have to in the present tense to talk about obligation. But there's one very important exception that I'm going to explain in this section. So first let's look at how to use must talking about obligation in the present tense. And we normally use this for things like rules and regulations. Like you must check in 40 minutes before the time of your flight. You must wear a mask at all times in the airplane.

We can use must in the negative to explain that something is forbidden, that it is prohibited, and to form it in the negative is very simple. Instead of must, we say must not. For example, you must not smoke inside the building or you must not arrive late. Simple.

Now, we use have to in the present tense again to talk about obligations. We don't use this so much for things that are regulations and rules, but simply things that are necessary. For example, you have to practice if you want to improve. I have to go to work early tomorrow because I have a lot to do. These are both things that are necessary. They're not regulations or rules, but they are necessary things. And that's why we use have to.

Now, for the big exception in the present tense, when we use have to in the negative, it completely changes the meaning. If we use must in the negative, you must not smoke inside the building, that means that it is forbidden. But if we use have to in the negative, it means that something is not necessary, but you can do it if you want. For example, in a hotel, if we say you must not take the key with you when you leave the hotel. That means that it is forbidden to take the key outside the hotel. However, if we say you don't have to take the key with you, that means you can if you want, but it's not necessary.

Do you see the difference? You must not means it's forbidden, but you don't have to means you can if you want, but it's simply not a necessity. It's not necessary.

[... Due to character limit, the rest of this transcription is unavailable]

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~ Greg 😀

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[MariaCeliaZamorano-nebl]

!!!! I LOVE YOU 😅😅😅, because you're SO CLEAR, you're an ENGLISH MASTER ...YOU'RE A CRACK
THANKS A LOT !!!😊😊 (CELIA FROM ARGENTINA 🇦🇷)
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[TheRichExplorer]

Is the difference between must and have regarding obligations restricted to American English? Cos according to Michael Swan's, Have to is usually preferred for regulations and orders from other people cos the obligation comes from the "outside" while in Must the obligation most often comes from the speaker in statements (and the listener in questions). For example, I must stop smoking. (I want to.) Vs I have to stop smoking. (Doctor's orders)

[maisavilanova]

Hi! I'm Brazilian and my English is getting better with you. Thanks 😍

[slowlearner]

I certainly enjoyed this video, Greg. And I definitely need / have / should / to repeat this action. "Repetitio est mater studiorum". Especially for people who's learned slowly. Thank you.

[pablobaio]

Sometimes is hard for non-native speakers to learn the slightly diference on some uses, so this video is very useful. Another great one. Cheers.

[savanpatel]

Hi Gerg, I love watching your videos regularly.
I'll be grateful if you make a detailed video on gerund and participle.

[anamahmed]

It's a great Chanel . I always try to watch the Chanel .

[ashaocean]

Hi
Greg
It’s very hard to understand this lesson but I want to listen when I have time.
It’s very interesting lesson for me . Keep it this Video for me . I am not expert about computer but I am learning

[ПавелЦукат]

What’s up, Greg. Your youtube channel is a discover for me. Thank you 🙏

[panszarlotka]

Please don't change the video convention anymore - this is absolutely perfect. Definitely world-class, professional level.
The video is not distracting by the fountains and allows you to focus 100% on the lesson. I am very glad that you are doing what you are doing. I have 98-99% understanding and I am a b1 / b2 student.
The only thing I would suggest are the subtitles on the left side of the screen, not on the right. But that's probably a personal preference. Maybe if you drive cars the other way round, it suits you better. ;) Good luck.

[gioc.]

A tremendously useful video! Impressive!

[shahidkhan-biig]

In my view this is the best channel for us to learn grammatical English with dear Greg and thank you very much for making such wonderful videos love and respect from Pakistan Peshawar

[hello-mynameis]

Hello Greg, I love your videos ❤ thank you :) I am an English teacher and am going to share this one with my students in this week's newsletter. It is a particularly tricky topic for Italians as they use the identical phrase for both 'mustn't' (prohibition) and 'don't have to' (absence of obligation) making it necessary to understand the context.

Your video explains everything very well, however I would appreciate clarification on 1 point you made on ‘must not’ as related to probability/speculation, because it goes against what Cambridge considers correct for their exams...

The opposite of 'must be' / ‘must have been’ (certainty) is 'can't be' / ‘can’t have been’ (impossibility) - and not, as you have stated, ‘mustn’t be’ / ‘mustn’t have been’. (Even though, as a native speaker, I used these forms too until I began preparing students for Cambridge exams.)

According to Cambridge, 'must not + verb’ is only used in the present for prohibition. Instead 'can’t + verb’ / ‘can’t have + past participle’ is used for probability and speculation to express an impossibility in the present and past.

You go to a friend’s house you ring and no one answers - You could say:
‘They must be out.’ / ‘They can’t be home.’ / ‘It must be that they aren't home.’ But according to Cambridge it is an error to say ‘They musn’t be home.’

You went to a friend’s house you rang and no one answered - You could say:
‘They must have been out.’ / ‘They can’t have been home’ / ‘It must be that they weren't home. But according to Cambridge it is an error to say ‘They musn’t have been home.’

Help? :)

[SarmmmMm]

Hi
I have watched many of your videos. Your videos are very easy to understand. I always be confused about Singular and Plural words such as everyone, everything, anything, something, someone, ... etc. and also a few, a little, a lot, lot of, few of, ... etc. need (s) or not. Thank you

[CultureEnjoyer]

Yo this is really a fantastic video keep up the great work 😅😅😅😅😅😅😅

[pufulita]

The best explanation on this topic!Thanks!

[Iammrunkown]

You have excellent communication skills

[fl]

You've got the best explanations ever! I've learnt so much through your channel since I started following it earlier this year.
Greg pls make a video on the 12 tenses

[raf]

Hi, Greg, we use in past Should ( debía o debería) and present simple web use must ( debo, debes, debe ....)

[peterjohnson]

HI Greg thanks for help me out of confused of the two must and have to cheers