Page 74 - 작업중 파일

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

do

It's a fantastic -AIm. I/we/you/they must go

You must see it. he/she/it see

eat etc.

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

0 I'm very hungry. I must eat something.

0 It's a f; antastic film. You must see it.

겁
0 Th e windows are very dirty. We must clean them.

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

0 I was very h ungry. I had to eat something. (not I must eat)

0 We had to walk home I ast night. There were no buses. (not We must walk)

mustn't (= must not) You mustn'ttouch

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

0 I must go. I mustn't be late.

0 I mustn't forget to phone Chris.

(= I must remember to phone her)

! You mustn't be sad. (= d on1t be sad)
0 Be happy! Yi

0 You mustn't touch the pictures.

(= don1t touch the pictures)

`'

don't need to

I don't need (to do something) = i 1t 1s not necessary:
=
。 I don't need to go yet. I can stay a little longer.

0 You don't need to shout. I can hear you OK.

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

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

Compare don't need to and mustn't:

O Y ou don't need to go. Yi ou can stay here if you want.

0 You mustn't go. You must stay here.

)

72 ( I have to ... ➔ Unit 33