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专题07 情态动词和虚拟语气

1. This does not mean that we have to write or call our friends every day.It does mean，however，that we care enough about our friends to find out how they are doing from time to time.

【解析】考查情态动词。根据语境特别是前面的have to可知，此处需要一个情态动词，should应该，语气合适；如用must，语气太强；may/can语气太弱。

【答案】should

2. I was really happy to be writing a detective story.But after the first few pages，I just write any more.

【答案】couldn't

3. I'm Captain John Blanchard.You be Miss Hollis.I am glad to meet you here. 【解析】考查情态动词。你一定是Hollis女士。根据语境可知此处要用must表示肯定推测。 【答案】must

4. He walked in as if he (buy) the school，and the word quickly got around that he was from New York City.

【解析】考查虚拟语气。在人称代词he后，显然是作谓语；又因他不可能是买下了这个学校，故应用虚拟语气，与过去事实相反，故填had bought。

【答案】had bought

5. I recommend that you (try) Baihe.com.

【解析】考查虚拟语气。recommend, suggest, request, command等后面的宾语从句使用虚拟语气，即should ＋动词原形，should可省略。

【答案】(should) try

6. Tom：Sandy.It seems that only half of the students passed the final exam. Sandy：Really? The exam have been very difficult this time.

【解析】考查情态动词。答句意为“这次的考试一定很难”。must have done肯定……，表示对过去的肯定猜测。

【答案】must 最新教育教学资料精选

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7. It's a pity you were late，otherwise you (see) the film star Rain from Korea. 【解析】考查虚拟语气。根据otherwise判断此处是含蓄型的虚拟语气，表示对过去的虚拟时，主句用would have done。

【答案】would have seen

8. All the students put on masks before going to school in case they are infected with flu virus.

【解析】考查情态动词。所有学生应在去学校之前带上口罩以防感染禽流感。shall用于第二、第三人称，表示说话人给对方命令、警告、允诺或威胁。

【答案】shall

9. Had the government limited the sales of cars much earlier，traffic jam and pollution not be so serious now.

【答案】would

10. If you will stay here longer，you may.But you leave before this weekend.

【解析】考查情态动词。根据but可知，此处强调说话人主观上认为“必须”做某事，要求对方必须在周末前离开。must必须。

【答案】must

易错起源1、情态动词的词汇义辨析

例1．I have worried before I came to the new school, for my classmates here are very friendly to me.

【解析】句意：在来到新学校前我本不必担心，因为在新学校我的同班同学对我很友好。考查情态动词。needn't have done...本不必做的事做了。 【答案】needn't

【名师点睛】情态动词的基本用法 I.can(could)

1.表示体力或脑力方面的能力，或根据客观规定律能做某事的能力，意思是“能够”。can表“能够” 时，既可指将来，也可指现在。be able to 在表示能 力时与can同义，但可用:于各种时态，强调通过努力克服困难成功地做某事，相当managed to do 或succeeded in doing.例如:No one can (is able 最新教育教学资料精选

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to) finish such a difficult thing. He can speak English. I can go there now.

With the help of the fire men ,the the trapped peopel was able to leave the burning buildung(不能用could)

2.表示许可、允许，在疑问句中表示 “请求，许可”，否定句中表示 “不许”，此时可与may通采用，有时cannot可以表示 “禁止”，相当于“mustn’t”,例如: May(Can)I help you?

That sort of thing can’t go on !

You can’t ( mustn’t, are not allowed to ) play computer games again.

3.表示推测，强调客观可能性“可能、会”，can多用于疑问句和否定句，表示猜测时，情态动词后可用进行式或完成式。

—There comes a man. Who can it be? —It must be our English teacher.

—No, it can’t be him. He has gone to America! He can’t have gone there alone.

4.could表示“能力”“可能性”“许可”，为can的过去式。一般用于委婉、客气地提出问题或陈述看法，此时can，could并没有时间上的差别，只是 could的语气更客气些。回答时用原形回答。 —Could I borrow your English dictionary? —Of course you can. Go ahead. Ⅱ.may,might( might 为 may 的过去式)

1.表示许可，有“可以”的意思，询问或说的一件事可不可以做，有时可以用can互换。其否定式 may not表示“不可以、禁止、阻止”等，常用must not =mustn’t代替，may用于疑问句中，回答这种问题时，多避免用may，而用其他形式，以免显得口气太严峻或不客气。 例如:

—Mum, may I go to the cinema tonight?

—Yes, you may. (No, you mustn’t/ you’d better not. ) 比较:—Yes, please/please don’t. 2.表推测、或许、可能的意思，表示一件事或许会发生，只用在陈述包中。 例如:

Her parents may come to see her tomorrow. 最新教育教学资料精选