1 . The teacher said we ________ read this book for our own pleasure as it is optional. But we ________ read it if we don’t want to. (用适当的词填空)

2 . 选词填空。
1. My mother is ill, so I ________(have to/ must)stay home to look after her.
2. He ________(can’t/ mustn’t)be Tom. Tom has gone to London, you know.
3. It’s dark outside. Besides, it’s raining heavily. So, you ________(had better/ might)go home with me.
4. In today’s information age, the loss of data ________(can/must)cause serious problems for a company.
5. It’s strange that he ________(should/ must)have taken the books without the owner’s permission.
6. Samuel, the tallest boy in our class, ________(can/should)easily reach the books on the top shelf.
7. My room is in a mess, but I ________(needn’t/ shouldn’t)clean it before I go out tonight. I can do it in the morning.

3 . Tony has known the good news, so you ______ not tell it to him.(根据句意填空)

4 . 要做到这一点，我们需要虚心。(汉译英)

5 . 孩子不需要每天去学校。（汉译英）

6 . 选词填空mustn’t/needn’t
1. Books _________be taken out of the library without permission.
2. John is ill and he__________ go to school today.

7 . ——他需要留在这儿吗？
——不，他不必留在这儿。
— ________ here?
— No, he needn't.

8 . 我马上要去购物，但你不必跟我一起去。（汉译英）

9 . 选词填空

be able to, have to, had better, dare, need（包含其否定形式）

1. Afraid of water, I wonder if I ________ jump into the pool and swim.
2. I don’t want to attend the meeting, but I ________, because it’s required by the director.
3. He ________ be sent to hospital, as he’s seriously ill.
4. You ________ not come to the meeting if you’re too busy.
5. You ________ worry before you go to the new school, for your classmates there will be very friendly.
6. You ________ go to school without breakfast for it’s bad for your health.
7. We ________ take any food to the party as Sue will get everything ready.