[Essential Grammar in Use] Unit 31 - must, mustn't, don't need to - Githubissues

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[Essential Grammar in Use] Unit 31 - must, mustn't, don't need to #139

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gurubee commented 7 months ago

[[Essential Grammar in Use] Unit 31 - must, mustn't, don't need to]
EssentialGrammarinUse must mustnt dontneedto
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must, mustn't, don't need to

must + infinitive (must do / must work etc.):

unit31 - 1

I must (do something) = I need to do it:

I'm very hungry. I must eat something.
It's a fantastic film. You must see it.
The windows are very dirty. We must clean them.

For the past (yesterday / last week etc.), we use had to ... (not must):

I was very hungry. I had to eat something. (not I must eat)
We had to walk home last night. There were no buses. mustn't (= must not)

mustn't (= must not), I mustn't (do something) = it is necessary not to do it, it is the wrong thing to do:

I must go. I mustn't be late.
I mustn't forget to phone Chris. (= I must remember to phone her)
Be happy! You mustn't be sad. (= don't be sad)
You mustn't touch the pictures. (= don't touch the pictures)

I don't need (to do something) = it is not necessary:

I don't need to go yet. I can stay a little longer.
You don't need to shout. I can hear you OK.

You can also say don't have to ...

I don't have to go yet. I can stay a little longer.

Compare don't need to and mustn't:

You don't need to go. You can stay here if you want.
You mustn't go. You must stay here.

Exercises

Complete the sentences. Use must + these verbs:

be ~~eat~~ go learn meet wash win

I'm very hungry. I (must eat) something.
Marilyn is a very interesting person. You (must meet) her.
My hands are dirty. I (must wash) them.
You (must learn) to drive. It will be very useful.
I (must go) shopping. I need to buy some food.
The game tomorrow is very important for us. We (must win).
You can't always have things immediately. You (must be) patient.

Write I must or I had to.

(I had to) walk home last night. There were no buses.
It's late. (I must) go now.
I don't usually work on Saturdays, but last Saturday (I had to) work.
(I must) get up early tomorrow. I have a lot to do.
I came here by train. The train was full and (I had to) stand all the way.
I was nearly late for my appointment this morning. (I had to) run to get there on time.
I forgot to phone David yesterday. (I must) phone him later today.

Complete the sentences. Use mustn't or don't need to + these verbs:

forget ~~go~~ lose phone rush wait

I (don't need to go) home yet. I can stay a little longer.
We have a lot of time. We (don't need to rush).
Keep these papers in a safe place. You (mustn't lose) them.
I'm not ready yet, but you ( don't need to wait) for me. You can go now and I'll come later.
We (mustn't forget) to turn off the lights before we leave.
I must contact David, but I (don't need to phone) him - I can send him an email.

Write must / mustn't / had to / don't need to

You (don't need to) go. You can stay here if you want.
()
It's a fantastic film. You (must) see it.
The restaurant won't be busy tonight. We (don't need to) reserve a table.
I was very busy last week. I (had to) work every evening.
I want to know what happened. You (must) tell me.
I don't want Sue to know what happened. You (mustn't) tell her.
I (must) go now or I'll be late for my appointment.
'Why were you so late?' 'I (had to) wait half an hour for a bus.'
We (don't need to) decide now. We can decide later.
It's Lisa's birthday next week. I (mustn't) forget to buy her a present.

gurubee commented 6 months ago

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