2. Modal Verbs
must, mustn’t, needn’t

3. Must
Do it! It is necessary to do it. The light is red. You must stop. Peter is doing an important exam next week. He must study hard. There isn’t any bread at home. I must go shopping.

4. Mustn’t
Don’t do it! It is forbidden to do it. Children mustn’t drink alcohol. You mustn’t smoke at school. Pupils mustn’t use their mobile phones during the lessons.

5. Needn’t
You can do it, but it is not necessary to do it. You needn’t go to school by bus. I can give you a lift. I have a lot of time. I needn’t hurry. We needn’t get up so early. It’s Sunday.

6. Put in must, mustn’t, needn’t.
I have a tootache. I _______ go to the dentist’s. It’s Saturday tomorrow. I _______ get up early. You _______ ride a motorbike without a helmet.
must
needn’t
mustn’t

7. Complete the sentences. Use the pictures.
You _______ stop. You _______ smoke here. You _______ go there.
must
mustn’t
mustn’t

8. Your ideas
I must ………………………. I mustn’t ………………….. I needn’t …………………..

9. Zdroje obrázků: http://office.microsoft.com