must / have to的区别: ①.must / have to一般可以通用, 但must侧重于说话人主观上的看法, 即“说话人认为必须 ; have to侧重于客观上的需要, 含有“客——青夏教育精英家教网—

摘要：must / have to的区别: ①.must / have to一般可以通用, 但must侧重于说话人主观上的看法, 即“说话人认为必须 ; have to侧重于客观上的需要, 含有“客观上不得不之意 a. If the person is not breathing, you must try to start his breathing. b. You must / have to study with a teacher if you want to know how to do first aid. ②.must没有时态的变化, 一般用于表示现在或将来; have to有时态的变化, 可用于过去, 现在, 将来各种时态 a. We must study hard when we are young. b. I think she must remain in hospital for a week. c. We had to stay there for a whole day because of the rain. d. We have to practise a lot if we want to speak English well. e. The situation has changed; we will have to change our plan. ③.它们的否定式mustn’t / not have to有很大的不同: mustn’t表示“不要 , 有禁止之意; not have to表示“不必要 , 含有“客观上无此必要之意 a. You mustn’t move a person if he is badly hurt. b. You don’t have to be a doctor to do first aid.

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根据对话内容。从对话后的选项中选出能填入空白处的最佳选项。并在答题卡

上将该项涂黑。选项中有两项为多余选项。

一Hi, Bob．Would you like to go swimming this afternoon?

一I wish I could. 1.I have to write a composition. It must be handed in next Monday morning.

一Oh, is that for Mr.Smith’s class?

一Yes, I hav to study a long peom． 2.

一That’s hard．

一And besides, I also have to prepare myself for math and history. You know, math is especially hard for me. 3.

一Take it easy, Bob. I’ve beendoing well in math． 4.

一Oh, that will be great, Mary.

一All right! 5.

一OK, I’ll meet you in front of the library.

一Good luck to you.

A．We can start right when I’m back from swimming.

B．So I don’t know how I’m going to do it at all.

C．And I can help you with your history．

D．But I have to spend the rest of the day in the library．

E．So I’ll be happy to help you．

F．My teacher asked me to read it in class next week．

G．When will I start to help you with your math?

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第二节根据对话内容。从对话后的选项中选出能填入空白处的最佳选项。并在答题卡