情态动词有can，could，may，might，must，have to，shall，should，will，would，need，dare等。情态动词没有人称和数的变化，有词义但不完整，不能单独作谓语，必须和不带to的不定式连用。情态动词一直是高考的重点和难点，本文试就2007年全国各省市高考试题中的情态动词考例作一归纳，供同学们复习时参考。

热点一 ：must的用法

考例：1. ---- Guess what! I have got A for my term paper. [2007 上海卷]

---- Great! You ______ read widely and put a lot of work into it.

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

2. The teacher _______have thought Johnson was worth it or she wouldn't have wasted time on him, I suppose. [2007 安徽卷]

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

3. ---- She looks very happy. She ______ have passed the exam. [2007 江苏卷]

---- I guess so. It's not difficult after all.

A. should B. could C. must D. might

4. In crowded places like airports and railway stations, you_______ take care of your luggage. [2007 北京卷]

A. can B. may C. must D. will

【知识点归纳】(1) 第1、2、3题都是考查 must have done sth的用法，表示对过去的肯定推测。(2) 第4题 must 表示义务、命令或必要。

Keys：1.C，2.D，3.C，4.C

热点二：can/could 的用法

考例：1. The biggest problem for most plants, which ________ just get up and run away when threatened, is that animals like to eat them. [2007 湖南卷]

A. shan't B. can't C. needn't D.mustn't

2. My MP4 player isn't in my bag. Where I have put it? [2007 福建卷]

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

【知识点归纳】(1)第1题can 表示能力"能，会"。(2) can/could have done 意思是"过去可能做过某事"常用于疑问句。

Keys：1.B，2.A

考点三：should的用法

考例：1. ---- How's your tour around the North Lake? Is it beautiful?

---- It ________ be, but it is now heavily polluted. [2007 全国卷I]

A. will B. would C. should D.must

2. ---- My cat's really fat.

---- You ______ have given her so much food. [2007 浙江卷]

A. wouldn't B. couldn't C. shouldn't D. mustn't

3. I told your friend how to get to the hotel, but perhaps I have driven her there. [2007 陕西卷]

A. could B. must C. night D. should

4. ---- Turn off the TV, Jack. ________ your homework now?

---- Mum, just ten more minutes, please. [2007 辽宁卷]

A. Should you be doing B. Shouldn't you be doing

C. Couldn't you be doing D. Will you be doing

【知识点归纳】(1)第1题should表示比较有把握的推测，意思是"按理说,应该" 。(2) 第2、3题should have done sth表示过去本应该做某事却没有做。(3) 第4题should表示义务、责任，用于各种人称。

Keys：1.C，2.C，3.D，4.B

考点四：need的用法

考例 1. The boss has given everyone a special holiday, so we go to work tomorrow. [2007 上海春]

A. can't B. mustn't C. needn't D. shouldn't

2. As a result of the serious flood, two-thirds of the buildings in the area . [2007 陕西卷]

A. need repairing B. needs to repair C. needs repairing D. need to repair

【知识点归纳】(1) 第1题needn't 表示没有必要。(2) 第2题need作实义动词后面跟-ing形式，用主动式表被动，相当于need to be done。

Keys：1.C，2.A

考点五：has/have to be 的用法

考例：1. ---- What do you think we can do for our aged parents?

---- You ________ do anything except to be with them and be yourself. [2007 重庆卷]

A. don't have to B. oughtn't to C. mustn't D. can't

【知识点归纳】(1) don't have to = needn't 意思是没有必要。

Keys：1. A

考点六：may/might的用法

考例：1. ---- Where is my dictionary? I remember I put it here yesterday.

---- You ________ it in the wrong place. [2007 江西卷]

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

【知识点归纳】(1) May/might have done sth表示对过去的可能性推测"过去可能做了某事"其程度小于must have done sth 。

Keys：1. D

考点七：shall的用法

考例：1. ---- What does the sign over there read?

---- "No person ________ smoke or carry a lighted cigarette，cigar or pipe in this area．" [2007 四川卷]

A．will B．may C．shall D. must

【知识点归纳】(1) shall用于法律、法规条文中，表示必须遵守规定的内容 。

Keys：1.C

从以上的例析中可以看出，高考试题对情态动词的考查热点有：（1）情态动词must + do表义务命令等的用法。（2）情态动词 + have + done 结构表过去推测或虚拟的用法。（3）shall表推测、命令或指示、义务或规定、意图或允诺的用法。（4）can表能力的用法。（5）need作情态动词和实义动词的用法。