Unit 4 On the farm

例1 根据句意选择选择正确的词语填空。
1．have to; must
1）I_______ stop on the way because of the rain.
2）I _______stop because I'm a little tired.
2．listen ; hear
3） I ______carefully, but I ______nothing.
3．also; too
4）I live in Beijing and Mike ______lives here.
5）My family are on the third floor and John’s are ______.
4．play; play with
6） Don’t _______the dog. It’s dangerous.
7）Can you _______football?
5．agree with; agree to
8） Your answer is wrong. I don’t _______you.
9） It will be fine tomorrow. Your idea is very good. I ______it.
答案：

1. have to 2.must 3.listen; hear 4.also 5. too 6.play with 7.play 8.agree with 9.agree to
说明：

第1题：have to与must都是情态动词，意思“必须”。但have to又同时具有实义动词的性质，有人称、数及时态的变化。另外，从意义上说，have to常表示外界条件强加的“客观”因素；而must则表示个人意识中的“主观”原因。注意：对以must开头的一般疑问句作简略回答时，肯定用must，否定用needn't，而不可用mustn't。如：Must I finish the work now? Yes, you must / No, you needn’t.