Page 54 - English Grammar in Use Suppl. Ex. - Fifth Edition

Units
Units
31–33 must(n’t), need(n’t), should(n’t) and don’t have to

75 For each pair of sentences, write same if sentences a and b have the same meaning. If the
meaning is different, try to explain.
1 a It is vital to wear a helmet when you ride a motorbike. same
b You must wear a helmet when you ride a motorbike.
2 a I expect we’ll get the contract because we offered the best price.
b We offered the best price, so we should get the contract.

3 a It isn’t necessary for us to spend a long time in the museum if it’s not interesting.
b We shouldn’t spend a long time in the museum if it’s not interesting.

4 a It was wrong of you to open the package.
b You must have opened the package.
5 a She promised to phone me before lunch. It’s seven o’clock now.
b She should have phoned me by now.
6 a I made far more sandwiches than we needed.
b I needn’t make so many sandwiches.
7 a It’s essential that my father doesn’t find out what I’ve done.
b My father must have found out what I’ve done.
8 a In my opinion it would be wrong for them to move house now.
b I don’t think they need to move house now.
9 a My sister offered me a lift, so it wasn’t necessary for me to call a taxi.
b As my sister offered me a lift, I didn’t need to call a taxi.

10 a I think it’s a good idea to check the timetable before we leave.
b We should have checked the timetable before we left.

76 Complete the sentences with must(n’t), need(n’t) or should(n’t).
1 Oh no – my phone’s dead. I must find my charger straight away!
2 You finish that essay tonight if you’re too tired. Midday tomorrow is the deadline.
3 What are you doing here? you be at college?
4 He really have told his brother about this present. It was supposed to be a secret.
5 You pay to go into this exhibition because I’ve got my membership card with me.
6 You make so much noise. We’ll be asked to leave the restaurant if you don’t
stop shouting.
7 I’m going to be in trouble. I have texted my mum earlier this afternoon and
I completely forgot.
8 You have gone to the bus station, you can book tickets online.

46 English Grammar in Use Supplementary Exercises