七年级 情态动词

第六讲情态动词和祈使句

情态动词can 的用法

一、概念。

Can 是情态动词，表示“能、可以、会”。后面加动词原形。

1.表示"能、会",指脑力或体力方面的"能力"。例如:

I can speak English.我会讲英语。

2.表示"可能",常用于否定句或疑问句中,指某种可能性。例如:

Han Mei can't be in the classroom.韩梅不可能在教室里。

Can he come here today, please?请问他今天能到这里来吗？

3.表示"可以",常用于口语中,指许可或请求做某事。例如:

Can I have a cup of tea, please?请问我可以喝一杯茶吗？

二、句型构成。

肯定句:主语+can+动词原形+其他。

否定句：主语+can’t+动词原形+其他。

疑问句：Can+主语+动词原形+其他？

肯定回答：Yes,主语+can。

否定回答：No,主语+can’t.

注意：

1. can’t =can not

2.在变否定句和疑问句时主语不变，只有在回答时才用相应的人称代词代替。

3.当主语是第一人称(I, We )时，变疑问句时要把第一人称(I, We)改为第二人称You。

4.Can 没有人称和数的变化后面永远加动词原形。

情态动词can练习题

1、______ I feed the monkey？

Yes，______ can.

2、Can I take a photo？

No，______ can’t.

3、I can feed the monkey.（变疑问句）

___________________________________________

4、You can take a photo.（变疑问句）

___________________________________________

5、Can I go to the bathroom？（变陈述句）

___________________________________________

6、Can we take a photo？（变陈述句）

____________________________________________

7、You can eat pizza.（变否定句）

__________________________________________

情态动词must与have to

区别1：must多表示主观需要或责任感的驱使有必要或有义务去做某事，多译为“必须”，而have to多表示客观存在的环境所限,即客观要求(无奈)而为之，多译为“不得不干某事”。

例： We must be there on time. （责任感的驱使）我们一定准时到达。

I have to do my homework now.（不得不做）我现在不得不做作业。

区别2：must没有时态的变化，而have to有时态的变化。

We don’t have to go to school on Sundays.星期天我们不必上学。

区别3：must的否定为mustn’t，多表示“禁令”。

例：No!You mustn’t turn left! You must turn right into The Strand.

不！你不能向左转！你应该向右转进入到strand中。

注意：由must引起的疑问句，肯定回答要用must或have to，否定回答要用needn’t或don’t have to，意思是“不必”；此用法在中考中的单选题中容易出现！

例：1）—Must I finish my homework before eight oclock?

—Yes, you must.

我必须要在8点之前完成作业吗？是的，必须。

2）—Must I attend the meeting?

—No, you needn’t/don’t have to. You can ask Tom to go instead.

我必须要参加这次会议吗？不。你不必。你可以让汤姆替你去。

一、填空

1. There is nothing in the fridge. I ______________(得) go shopping now.

2. It’s very warm. You __________________(不必) to wear the coat.

3. Do I have to do the homework now? - Yes, you ____________ (必须).

4. He can’t meet his friends tonight because he ______________ (不得不) to do his homework.

祈使句

一、概念

祈使句是英语的基本句型之一，表达说话人对对方的叮嘱、劝告、请求或命令等，往往有表示请求、命令、希望、禁止、劝告等意思。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。

※祈使句的肯定句式有三种形式：

（1）Do型（行为动词原形+副词）eg: Sit down! 坐下！Stand up! 起立！（2）Be型（连系动词be+表语，如形容词、名词等）eg: Be quiet! 安静！（3）let型（let+人称代词的宾格+动词原形+其他成份）。eg: Let me help you. 让我来帮助你。

（4）否定句式很简单，“Don’t”开头记心间。

eg: Don’t go there, please.Don’t be late.Don’t let him in.

含第一人称主语（us, me）的let型祈使句的否定，否定式是这样构成：

Let’s (us, me) + not +动词原形……eg: Let’s not sit here. 我们不要坐在这儿。

(5) 有些可用no开头,用来表示禁止性的祈使句。如:No smoking! 禁止吸烟!No fishing!

二、选择题

1. The TV is too loud. Please________.

A. turn it down

B. to turn it down

C. turn down it

D. to turn down it

2. _______ late again, Bill!

A. Don't to be

B. Don't be

C. Not be

D. Be not

3. _______ cross the road until the traffic lights turn green.

A. Not

B. Won't

C. Doesn't

D. Don't

4. Kate, _______ your homework here tomorrow.

A. bring

B. brings

C. to bring

D. bringing

5. ________ me the truth, or I'll be angry.

A. Telling

B. To tell

C. Told

D. Tell

三、用所给单词正确形式填空

1. It’s an important meeting. (not, be )late.

2. (not,make) any noise! Your mother is sleeping.

3. (not, speak) with your mouth full of food and (be) polite.

4. ( not, talk) and (read) aloud.

5. (not,leave) your homework for tomorrow, Larry.

6. (look) out! A car is coming.

7. (give) us ten years and just see what our country will be like.

8. (not, let) the baby cry.

四、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.

五、句型转换

1. Will you please read it again more slowly? （改为祈使句）

again more slowly, please.

2. If you don't listen to me, I'll go. （改为同义句）

me, or I’ll go.

3. The teachers often tell the students not to be careless. （改为祈使句）

careless, please.

4. If you move, you'll die. （改为同义句）

, or you'll die.

巩固与练习

一、句型转换。

1.She can eat in the dining hall.(改为一般疑问句）

She________in the dining hall?

2.You can’t eat in the classroom.(改为祈使句）

_______ ________ in the classroom.

3.We have to wear uniforms at school.(改为一般疑问句）

_________you_________to wear uniforms at school?

4.Let’s play games after school.(改为否定句）

Let’s_____ _____games after school.

5. We can’t listen to music in the room. (改为祈使句)

________ ________ to music in the room.

6.Eat in class, please. (改为否定句)

_______ _______ in class, please.

7. We must wear uniforms on Monday. （改为同义句）

We ______ ______ wear uniforms on Monday.

8. There is one thing you can do. (改为复数形式)

There ______ _______ _______ you can do.

9.We can listen to music outside the hallways.(对画线部分提问)

________ ________ we listen to music?

10. She has to wear sneakers for gym class.(变成一般疑问句，并作肯定回答) _____________________________________________________________ 11.Uncle Wang does housework on weekend.(改一般疑问句)

_______ Uncle Wang _______ housework on weekend?

12.You can’t turn on the radio. (改为祈使句)

________ _______ on the radio.

13. 5. I have to do my homework after school.(对划线部分提问)

_____________________________________________________________

二、用括号中所给单词的适当形式填空。

1. We have to ______ (wear) uniforms to school every day.

2. Jim ______ (have) to brush his teeth before going to bed.

3. My mother often asks me to practice_______ (play) the violin.

4. Don’t ______ (bring) music players to school.

5. Don’t be_____( noise) in the library.

6. Does Jack ______ (do) his homework on time?

7. She ______ (not like) playing basketball.

8.I have to ______ (get up) at six o’clock.

9.She _____________ （have to）make her bed after getting up.

三．选择填空

（）1.We can eat in the cafeteria. But we ______ eat in the classroom.

A. don’t

B. didn’t

C. can’t

D. aren’t

( )2.When Jim goes _______ the classroom the teacher is having class.

A. to

B. in

C. out

D. into

( )3.Don’t forget________ me this evening.

A. to call

B. call

C. calls

D. calling

( )4.Don’t talk ________ in the library.

A. loud

B. loudly

C. low

D. lowly

( )5.I have ___ rules in my home. We have ___ homework to do today.

A. too many, too much

B. too much , many too

C. too many, much too

D. much too, many too

( )6.-Can your brother swim? -________.

A. Yes, he can’t

B. Yes, please .

C. No, he can’t

D. Yes, he does ( )7.”No______ !”says the sign.

A. smoke

B. smoking

C. smokes

D. to smoke

( )8.-Can you cook fish? - ________. It’s easy.

A. No, I can’t

B. Yes, I can

C. Sorry, I can’t

D. Yes, I need

( )9.-What did Mary have ___________breakfast this morning? -She got up late and hurried to school ________ breakfast.

A. for, without

B. at, without

C. for , after

D. at, after

四、改正下列句子中的错误

1. Not sit over there.

2. Be not angry with me.

3. Don’t please look at me.

4. Let me to help you.

5. Don’t late for school.

6. No swim!

7. Let’s good friends!

8. Come please here.

(完整)初中英语情态动词练习题及答案

( )1 John___ come to see us tonight, but he isn't very sure yet. A. may B. can C. has to D. Must 2 They ___ do well in the exam. A. can be able to B. be able to C. can able to D. are able to 3 —May I take this book out? —No, you___. A. can't B. may not C. needn't D. aren't 4 You___ go and see a doctor at once because you're got a fever. A. can B. must C. dare D. would 5 —Can you speak Japanese? —No, I____. A. mustn't B. can't C. needn't D. may not 1. – He___ be in the classroom, I think —No, he ___ be in the classroom. I saw him go home a minute ago. A. can; may not B. must; may not C. may; can't D. may; mustn't 2 —Shall I get one more cake for you, Dad? —Thanks, but you___, I've had enough. A. may not B. must not C. can't D. needn't 3 Even the top students in our class can't work out this problem, so it be very difficult. A. may B. must C. can D. need 4 He isn't at school. I think he ___ be ill. A. can B. shall C. must D. has to 5 ___ I take this one? A. May B. Will C. Are D. Do 1 The children___ play football on the road. A. can't B. can C. mustn't D. must 2 You ___ be late for school again next time. A. mustn't B. needn't C. don't have to D. don't need to 3 —Must I do my homework at once? —No, you___. A. needn't B. mustn't C. can't D. may not 1 His arm is all right. He___ go and see the doctor. A. has not to B. don't have to C. haven't to D. doesn't have to 2 He had to give up the plan, ___ he? A. did B. didn't C. does D. doesn't 3 They had to walk here, ___ they? A. mustn't B. did C. didn't D. hadn't 1 He had better stay here, ___ he? A. doesn't B. don't C. hadn't D. isn't 2 You'd better___late next time. A. not to be B. not be C. won't be D. don't be 3 You'd better ___ your hair ___ once a month. A. had; cut B. had; cutted C. have; cut D. have; cutted 4 You___ ask that man over there. Maybe he knows the way. A. had better not to B. had not better C. had better D. had better not 1 —Shall we go and visit the History Museum next Sunday? —________ A. Here you are B. Sorry, I can't C. Yes, please D. Let me try 2 —Why don't you ask Mike to go with us? —Thanks, ___. A. I will B. I won't C. lean D. I may 3 —___ I take the newspaper away? —No, you mustn't. You____read it only here. A. Must; can B. May; can C. Need; must D. Must; must 1 Excuse me. ___ you please pass me that cup? A.Do B. Should C. Would D. Must 2 ___ you like to have another try? A. Could B. Will C. Would D. Do 3 —Would you like to go boating with us? —Yes, ___. A. I'd like B. I want C. I'd like to D. I do 1 You___ worry about your son. He will get well soon. A. needn't B. can't C. mustn't D. have to 2 The poor man needs our help, ___ he? A. need B. needn't C. does D. doesn't 3 —Must we do our homework first? —No, you___. You may have a rest first. A. mustn't B. needn't C. may not D. can't 1. I told Sally how to get here, but perhaps I _______ for her. A. had to write it out B. must have written it out C. should have written it out D. ought to write it out 2. —There were already five people in the car but they managed to take me as well. —It _______ a comfortable journey. A. can’t be B. shouldn’t be C. mustn’t have been D. couldn’t have been 3. It’s nearly seven o’clock. Jack _______ be here at any moment. A. must B. Need C. should D. can 4. Johnny, you _______ play with the knife, you _______ hurt yourself.

情态动词练习题带答案

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初中英语情态动词详细用法归纳(含练习及答案)(直接打印版)

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初二 英语情态动词填空练习题含答案解析百度文库

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