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12.This pen looks like mine, yet it isn't. Whose _________ it be ? A.must B.may C,would D.can

13.John _________ go there with us tonight,but he isn't very sure about it. A.must B.can C.will D.may

14.Even the top students in our class can't work out this problem.So it ________ be very difficult.

A.can B.may C.must D.need. 15.It's still early.You ________.

A.mustn't hurry B.wouldn't hurry C.may not hurry D.don't have to hurry.

16._______ you be happy!

A.Might B.Must C.Wish D.May 17.-How long _______ the book be kept ?

-For two weeks, but you ________ return it on time.

A.can, may B.may ,need C.can, must D.must ,need. 18.-Could I call you by you first name ?-Yes, you _______. A.will B.could C.can D.might 19.-______ the man there be our new teacher? -He _______ be,but I'm not sure.

A.May, mustn't B.Can, may C.Muat , can't D.Can, can't 20.-Someone is knocking at the door. Who _______ it be ? -It ________ be Tom. He is still in the school.

A.can, can't B. can, mustn't C.might, could D.might ,may 填空题

选用 can, could ,may, must ,shall ,should,will, would ,can't,mustn't,needn't ,have to填空 1.There is air around us , though we ______ see it.

2.Your mother is getting better and better. You ______ worry about her. 3.You _______ play football in the busy street.

4.-\5.Tom ________ come to the party tonight, but I'm not sure. 6.________ you please fetch some water for me ? 7.Young trees ________ be planted in spring. 8.-\ -\

9.Please speak a little louder so that I _______ hear you. 10.__________ you please open the window ? 11.I can play football.___________ you swim ?

12.Don't worry. You ______ return me this book tomorrow. 13.My grandma is ill. You ______ talk so loudly here.

14.I can't play with you. I ______ finish my homework first.

15.I ________ get up early tomorrow because I will have a meeting.

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3. 祈使句和感叹句 祈使句

一、定义：用于表达命令、请求、劝告、A. have B. having C. to have D. had

警告、禁止等的句子叫做祈使句，祈使句最常用于表达命令。祈使句因对象（即主语）是第二人称，所以通常都省略。祈使句的动词都为一般现在时，句末则使用句号来表示结束。例： Go and wash your hands.

Be quiet, please.（Please be quiet.） No parking. 二、表现形式 ●肯定结构:

1. Do型(即:动词原形(+宾语)+其它成分)。如:Please have a seat here.

有的祈使句在意思明确的情况下，动词可省略。如:

This way, please. = Go this way, please. 2. Be型(即:Be + 表语(名词或形容词)+其它成分)。如：Be a good boy!

3. Let型(即:Let + 宾语 + 动词原形 + 其它成分)。如：Let me help you. ●否定结构:

1. Do型和Be型的否定式都是在句首加don't构成。如

Don't forget me! Don't be late for school!

2. Let型的否定式有两种:“Don't + let + 宾语 + 动词原形 + 其它成分”和“Let + 宾语 + not + 动词原形 + 其它成分”。如:Don't let him go. / Let him not go. 3. 有些可用no开头,用来表示禁止性的祈使句。如：No smoking! No fishing!

过关训练（祈使句）

一、将以下祈使句改为否定式： 1. Come here early. 2. Ask him.

3. Please wait for her.

4. Read the book carefully. 5. Sit under the tree, please. 6. Let’s go there together. 二、选择最佳答案填空：

1. If you are tired, ______ a rest.

2. ______ me go. It is very important for me.

A. Do let B. let do C. Doing let D. To do let 3. He is not honest. ______ believe him. A. Not B. Don’t C. To not D. Not to 4. If you want to stay, let me know, ______?

A. will you B. shall we C. do you D. do we 5. Never come late again, ______? A. will you B. won’t C. do you D. does he 6. _____ up early tomorrow, or you can’t catch the train.

A. Getting B. Get C. To get D. Got 7. _____ in the street. It’s dangerous. A. Not play B. Not to play C. Don’t play D. Don’t to play

8. Please ______ me some money, will you?

A. lend B. lending C. to lend D. be lend 9. The film is about to begin. Please ______ seated.

A. be B. are C. is D. being 10. _____ the boxes. You may use them later.

A. Keep B. Keeping C. To keep D. Kept

11.The teacher told the boy, “______ late next time.”

A. Not B. Not be C. Don’t D. Don’t be

12.______ in the street. It’s dangerous. A. Don’t play B. Doesn’t play C. Not play D. Not to play

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13.“______!” Our teacher said to us. A. You hand in your exercise-books, please

B. Please you hand in your exercise-books _______________________________ 3. How +主 + 谓！ e.g. How time flies!

C. Hand in your exercise-books, please D. Please to hand in your exercise-books

what和how构成的感叹句

感叹句是用来表示说话时的一种较为强烈的感情，如：喜悦，赞叹，惊讶，愤怒，厌恶等。 1）what引导的感叹句： What + (a/ an) + adj. + n. + 主 + 谓！（主谓常省略） 1. What + (a/ an) + adj. + 可数名词单数形式 + 主 + 谓！

e.g. ____________________________ (多聪明的一个男孩啊！)

2. What + adj. + 可数名词复数形式 + 主 + 谓！

e.g. ____________________________ (一些多酷的车啊！)

3. What + adj. + 不可数名词 + 主 + 谓！

e.g. _____________________________ (多好的天气啊！)

2) how 引导的感叹句：

1. How + adj. / adv. +主 + 谓！ e.g. How tall the boy is!

=__________________________ How happily she dances!

2. How + adj. + a/ an + 可数名词单数形式 +主 + 谓！

e.g. How beautiful a girl she is! =

4. 动词不定式和动名词

A、动词不定式作宾补 1)tell / ask / want sb. to do ___________________________ 否定式：tell/ask/want sb not to do _________________________ 2)省to不定式作宾补

过关训练（感叹句）：

I. 改写句子。根据要求改写句子。 1. How exciting the volleyball match is!

（改为同义句）

_________________________________ 2. How hard his father works every day!

（改为陈述句）

_________________________________ 3. What a useful book it is!（改为同义

句）

_________________________________ 4. What fine weather today!（改为同义

句）

_________________________________ 5. What a hard work it is to plant so

many trees around the river!（改为陈述句）

_________________________________ Ⅱ. 用ought to, shouldn’t, what, how, what a, what an填空。 1. _________ funny it is! 2. _______ fun it is!

3. __________ interesting book it is! 4. _________ interesting books they are! 5. _________ interesting the books are! 6. ___________ clever boy he is!

7. I ate a lot of cake, ________delicious! 8. __________ nice weather! 9. ___________ lucky you are! 10. __________ kind you are!

即：(l, m, n, 3h, 2看, 1f) sb do

l—let; m—make; n—notice; 3h—hear, have, help; 2看—see, watch; 1f—feel 但注意：1)help sb (to) do (to可省、可不省)

2)在改作被动语态时省去的to应还原

eg. Someone heard him sing in the room. He was heard to sing in the room. B、动词不定式与动名词的区别

1.(hope; learn; want=would like; decide) to do

2.(enjoy; finish; keep; mind; practise) doing

??bebusy(in)??spend...(in)???feellike????stop/keep/prevent...from???makeacontributionto???doing?preferdoingto???havefun???havesomeproblems? ???beworth??

??stoptodo:停下来去做（另一件事）?doing:停止做（正在做的事）?3.??forgettodo:忘记做??（未做）?doing:忘记已做了??（已做）??todo:记住做??（未做）?remember?doing:记住已做了??（已做）

过关训练(不定式和动名词)

I．单项选择

1. It is easy _________ the exam. A. pass B. to pass C. passing D. passed

2. ---Shall we go hiking（远足）this Saturday?

---I am sorry. I have a lot of homework __________ this Saturday. A. do B. to do C. doing D. did

3. Don’t do your homework all the time. Stop ________ with others. A. talk B. to talk C. talking D. talked

4. It’s time for us to learn Lesson 3. Please stop __________.

A. talk B. to talk C. talking D. talked

5. She kept _______ when she heard the

4.(see,watch,hear)sbdo(动作结束）doing(动作在进行）

5.goontodo:接着做??（另一件事）doing:继续做??（原来的事）

6（.begin,start,like)tododoing(常可替换）

??Whynot?7.??hadbetter???Will/would/Couldyouplease??动原???prefertodoratherthan??

8.介词+doing

eg. 1)What/ How about doing 2)be good at doing

good news.

A. laughing B. laugh C. to laugh D. laughed

6. What about ________ a debate（辩论）between Class 4 and Class 5?

A. have B. had C. to have D. having

7. Do you mind _________ a little _________ for the baby?

A. to making; room B. making; room C. to make; rooms D. making; rooms 8. My father always encourages me _______ English as much as possible.

A. speak B. speaking C. to speak D. spoken

9. I would like _________ a detective. A. be B. to be C. being D. am 10. She was ill so she didn’t feel like __________ anything.

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