1. Choose the correct verb.

1   You needn’t / mustn’t drive to the station. I’ll give you a lift.

2   I must / mustn’t do my homework this evening. It’s for tomorrow.

3   You needn’t / mustn’t go to bed. You can stay up.

4   They needn’t / mustn’t be home late. They’re getting up very early tomorrow.

5   You needn’t / must listen to the new Paloma Faith CD. It’s fantastic.

6   You needn’t / mustn’t interrupt. It’s rude.

7   You mustn’t / needn’t turn up the TV. I can hear it very well.

8   I must / mustn’t forget to buy Max a present. It’s his birthday on Sunday.

Answer

1 needn’t   2 must   3 needn’t   4 mustn’t   5 must

6 mustn’t   7 needn’t   8 mustn’t

2. Rewrite the sentences. Use must or mustn’t.

1   It’s important not to blow your nose in public in Japan.

     You mustn’t blow your nose in public in Japan.

2   In some Muslim countries, it’s important not to eat with your left hand.

     ……………………………………………

3   In lots of countries, it’s important that you eat everything on your plate.

     ……………………………………………

4   In Australia, it’s important for men not to wink at women they don’t know.

     ……………………………………………

5   In the UK, it’s important to say ‘please’ when asking for something.

     ……………………………………………

6   In the UK, it’s important not to talk with your mouth full.

     ……………………………………………

7   In Switzerland, it’s important for guests to arrive on time.

     ……………………………………………

Answer

2   In some Muslim countries, you mustn’t eat with your left hand.

3   In lots of countries, you must eat everything on your plate.

4   In Australia, men mustn’t wink at women they don’t know.

5   In the UK, you must say ‘please’ when asking for something.

6   In the UK, you mustn’t talk with your mouth full.

7   In Switzerland, guests must arrive on time.

3. Complete the sentences with mustn’t or needn’t and the verbs in the box.

forget     get up     hurry     recharge     watch     wear

1   You ……………………… the battery. I’ve already done it.

2   You ……………………… to phone George. He’s expecting a call from you.

3   We ……………………… . There’s plenty of time.

4   I ……………………… TV this evening. I’ve got loads of homework!

5   He ……………………… early. He can stay in bed.

6   He ……………………… that old sweatshirt. It’s got holes in it.

Answer

1 needn’t recharge   2 mustn’t forget   3 needn’t hurry

4 mustn’t watch   5 needn’t get up   6 mustn’t wear

4. Rewrite the sentences with You must, You mustn’t or You needn’t.

1   It isn’t necessary to take off your shoes.

     ……………………………………

2   It’s important that you use a knife and fork.

     ……………………………………

3   It isn’t necessary to take a gift.

     ……………………………………

4   It’s important that you don’t put your elbows on the table.

     ……………………………………

5   It’s important that you don’t eat noisily.

     ……………………………………

6   It’s important that you give the waiter a tip.

     ……………………………………

Answer

1   You needn’t take off your shoes.

2   You must use a knife and fork.

3   You needn’t take a gift.

4   You mustn’t put your elbows on the table.

5   You mustn’t eat noisily.

6   You must give the waiter a tip.

Challenge!

Write three sentences about you. Use must, mustn’t and needn’t.

1   ………………………………………

     ………………………………………

2   ………………………………………

     ………………………………………

3   ………………………………………

     ………………………………………

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