【编者按】威廉希尔app 小升初为大家收集整理了“小升初英语语法：情态动词”供大家参考，希望对大家有所帮助!

24. It rained heavily, so we _______ stay at home watching TV or surfing the Internet all day.

A. could B. had to C. must

答案：B

【解析】词语辨析。句意“雨下的很大，我们必须待在家里看电视或上网”。had to表示客观原因(下雨)而引起的必须干某事，must强调主观原因。could表示有能力干某事，与文意不相干。

28. — May I take the magazine out of the reading room?

— No, you can’t. You _________ read it here. It’s the rule.

A. must B. would C. may D. might

答案：A

【解析】情态动词词义辨析。must必须;would将要;may也许;might可以。根据句意，我可以把杂志带出阅览室吗?不可以。你必须在这儿读它。这是规则。故选A。

35.-Dad, may I watch TV?

-No, you can’t. You _______ finish your homework first.

A. must B. can C. may

答案：A

【解析】考查情态动词。must表示“必须”;can表示“有某种能力”;may表示“可以”。根据文意：你不能看电视，你必须先完成作业。用must。故选A。

18.一Bob，shall we go and meet our new classmate?

一Sorry.I'm busy now.But you_________ ask David to go with you.He is free.

A.need B.may C.would D.must

答案：B

【解析】情态动词的用法。need意思是需要，may是可以，would指将要，must意思是必须，根据句意应该表示建议，应用may。

30. If you are in the zoo, remember not to touch or go near the animals.

Although some of the animals are cute, you _________ leave them alone.

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

答案：A

【解析】情态动词的意义。前文的remember not to 提示，下文空格处用情态动词must 表示“必须”。

8. –Fifty dollars for such a T-shirt! You _____ be joking!

–I’m serious. It’s made of silk.

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

答案:A

【解析】情景对话。理解句意，你一定在开玩笑。must意为：一定，故选A项。

31.—Have you decided where to go for your summer vacation?

—Not yet. We _________go to Qingdao. It is a good place for vacation.

A. may B. should C. need D. must

答案：A

【解析】情态动词辨析。may意为“可能;可以”，表示猜测时，把握性不大;should意为“应该”;need指“需要”;must为“必须;可能;一定”，表猜测时把握性较大。由答语句意“还没定下来”和“(青岛)是个度假的好地方”可知为“可能”，故选A。

38. —Must I be home before eight o'clock, Mum?

— No, you_____. But you have to come back before ten o'clock.

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

答案：A

【解析】情态动词。must引导的一般疑问句，否定回答是needn’t或don’t have to,意为“不需要”。故选A。

3.—_________ I borrow your history book?

—Sure. Here you are.

A. Must B. May C. Need D. Will

答案：B

【解析】情态动词辨析。must “必须”， may “可以”，语气委婉，表示请求建议， need “有必要”， will “要，想要”，常用于第二人称的请求建议。语境“--我可以借你的历史书吗?-- 当然，给你。” 故选B.

21.The talented boy ____ write lyrics when he was at the age of ten.