Page 91 - Oxford_Grammar_for_Schools_3_Student_Book_Neat (1)

Must and mustn't

$10 Look at the pictures. Circle the correct answer.
Must and mustn't are modalverbs. We use must
and mustn't in rules and to give orders. ÿ You((mist)' mustn't stop here.

1 You must/ mustn't pay £5 to go in.
Subject must/mustn't Base form
2 You must / mustn't run.
You must wait here.
3 You must/ mustn't swim here.
You mustn't be late. 4 You must / mustn't be over 13 to go in.

We use must to talk about obligation. Must is 5 You must /mustn't turn right.
similar to have to.
You mustbe there atnineo'clock.

You must write inblack ink.
Mustn't is similar to can't.
You mustn't run inthe school. STOP
You mustn'tbringyour phoneto school.

To ask about obligation we usually use Do I have
to ... ?, not Must I...?
DoI have to be there at nineo'clock?
DoI have to write inblack ink?

*8 ©Ol6.5 Listen. Do we pronounce the -1ÿ,
't' inmust? Then listen and repeat. ©

ÿ You must arrive on time. jes¡J no Entry
1 You must eat everuthina. ues no
1 1 uu muji cu i c»ci yu 111 iu. ycj / / 1 ivy £5.00 ana over
2 You must open the door. yes/ no
3 You must learnthese facts. yes / no

4 You must bringa hat. yes/ no H
5 You mustn't say that. yes / no
6 You mustn't argue. yes/ no

9 o 16.6 Who is saying 1-8? Guess and match.
Listen and check. O

a sports teacher f police officer
b parent g doctor
c music teacher h bus driver No rightturn
d museum attendant i science teacher
e dentist
£
ÿ You must have lights on your bike at night. _
1 You must tidy your bedroom. _
2 You must eat a lot of fruit and vegetables. _

3 You must try to run faster. _
4 You must listen to the beat. -

5 You must sit down when we're moving. _
6 You mustn't take photos in here. _
7 You mustn't touch these chemicals. _
8 You mustn't eat so much chocolate. —

Unit 16 89