必修三Unit1学案4

Grammar（1）

学习目标

1. Grasp the definition of Modal verb. 2. Know about the usage of Modal verb. 自主学习 指导一：

定义：情态动词是一种本身有一定的词义，表示说话人的情绪，态度或语气的动词，但不能单独作谓语， 只能和其他动词原形构成谓语。 情态动词数量不多，但用途广泛。 指导二：

情态动词有四类： ① 只做情态动词：must, can(could),may(might)should would…… ② 可做情态动词又可做实义动词：need, dare, will ③ 具有情态动词特征：have(had, has) to, used to，ought to ④ 情态动词表猜测：一肯一否三不定（must一肯，can not二否，may，might，could，三不定。）

注：must的否定式是needn‘t，mustn't代表强烈禁止 must表示主观，have to表示客观。 指导三：

情态动词无人称和数的变化，情态动词后面跟的动词需用原形，否定式构成是在情态动词后面加 \。个别情态动词有现在式和过去式两种形式，过去式用来表达更加客气，委婉的语气，时态性不强，可用于过去，现在或将来。 自主训练

I. Multiple choices.

1. Some aspects of a pilot’s job _____ be boring, and pilots often _____ work at inconvenient hours. (湖南)

A. can; have to B. may; can

C. have to; may D. ought to; must

2. — How’s your tour around the North Lake? Is it beautiful? — It ________ be, but it is now heavily polluted. (全国I) A. will B. would C. should D. must

3. I told your friend how to get to the hotel, but perhaps I ________ have driven her there.陕西) A. could B. must C. might D. should

4. — She looks very happy. She _____ have passed the exam. — I guess so. It’s not difficult after all. (江苏) A. should B. could C. must D. might

5. — Where is my dictionary? I remember I put it here yesterday. — You ______ it in the wrong place. (江西)

A. must put B. should have put C. might put D. might have put

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6. According to the air traffic rules, you ______ switch off your mobile phone boarding. (上海)

A. may B. can C. would D. should

7. Thank you for all your hard work last week. I don’t think we ______ it without you.山东)

A. can manage B. could have managed C. could manage D. can have managed

8. But for their help, we _________ the program in time. (安徽) A. can not finish B. will not finish

C. had not finished D. could not have finished

9. The doctor recommended that you _ swim after eating a large meal. (浙江) A. wouldn't B. couldn't C. needn't D. shouldn't

10. — It’s the office! So you _______ know eating is not allowed here. — Oh, sorry.湖南)

A. must B. will C. may D. need II. Translate the following sentences.

1. A: ___________________ (我可以跟朋友去) to the harvest festival? B: Yes, you may.

2. A: If I want to be a doctor, __________________ (我应该学理科吗)? B: I think so.

3. “Your story sounds moving. _______________ (它会是真的吗?)” she asked. 4. I don't know where she is, she ________________ (可能在武汉).

5. At this moment, our teacher _______________ (想必在批改) our exam papers. 6. The road is wet. It ________________ (肯定下雨了) last night. 7. Your mother _____________________ ______ (一定一直在找你).

8. Philip _____________________________________________________ (可能在车祸中受了重伤).

9. — Linda has gone to work, but her bicycle is still here. — She ____________________ (可能上班) by bus.

10. Mike _______________ (一定还没有找回) his car, for he came to work by bus this morning.

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