情态动词和助动词的用法详解及练习

助动词的用法总结及讲解

一．助动词：情态助动词，基础助动词

助动词的定义：

助动词和情态动词都是英语中特殊动词，即：不能再句子中独立充当句子成分。而是与实义动词一起使用构成复合用语。常配合主要动词，协助构成否定句，疑问句，强调句，时态，语态等语法形式。

基础助动词有：be, do

情态助动词基本用法总结：

二．助动词的功能

助动词协助主要动词完成以下功用，可以用来：

a. 表示时态，例如：

What are you reading?（你正在阅读什么？）

I am reading a magazine.（我正在阅读杂志。）

He is singing. 他在唱歌。

We are working hard in the garden.（构成现在进行时）

b. 构成疑问句，例如：

Do you like college life? 你喜欢大学生活吗？

Do you live in Shanghai?

c. 与否定副词not合用，构成否定句，例如：

I don't like him. 我不喜欢他。

助动词练习

一． +句子剩余部分。

1.

2.She is a lovely girl. ________________________________________

3.We are classmates. ______________________________________

4.I am a doctor. ________________________________________

5.There is a bird in the tree. ________________________________

6.They are good friends. ____________________________________

7.I love my parents. _______________________________________

9. We have a pleasant home. _______________________________

10.They go to church on Sunday. _____________________________

11.You are a singer. ______________________________

二. 用do does be 填空

1． _____ she know all the answers ?

Yes , she ____ . No, she _____.

2． _____ the twins often fight ?

Yes ,_____ do. No, _____ don’t.

3． _____ your dad like listening to music?

Yes ,____ does . No, _____ doesn’t.

4． _____ you have a new teacher?

Yes , I ______. No, I ______.

5． _____ she a teacher?

Yes, she _____ . No, she _____.

6． _____ your father smoking in the living room?

Yes, ____ is .No, he _____.

情态助动词练习

二．选择

1.（）－Dad, may I watch TV?

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

A. must

B. can

C. may

2.( ) —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

3.( ) —_________ I borrow your history book?

—Sure. Here you are.

A. Must

B. May

C. Need

D. Will

4.（） you like some bread ?

A . Would B. Could C . Can

5.（）We throw the waste in the zoo.

A. c an’t

B. don't

C. mustn’t

6. ( ) We should more flower s, and we shouldn’t cut any flowers.

A. plant

B. planting

C. plants

7. ( ) May I have some water?

A. Yes,you have.

B. Yes,you can.

C. Yes,certainly.

8. ( ) Shall we work on the farm ?

A. Yes, we do.

B. Yes, we shall. B. All right.

9. ( ) Would you have something to announce?

A. Yes, we would.

B. Yes, I’d like .

C.Yes, of course.

10. ( ) Can I help you?

A.Yes, you can.

B.No, I can do it.

C.Yes. I’d like some oranges. 三．填空

1. Must I stand up? No, you ________.

2. ________ I speak something? Yes, you ________.

3. ________ I leave the park now? No, you _________ stay here.

4. My grandmother is ill. I _________ stay at home and look after her.

5. ________ you like some juice?

6. They ________ take more exercise.

7. ________ you tell me the way to the museum?

8. The watch ________ tell us the right time.

9. ________ you like to go boating with us?

10. ________ we play chess next weekend?

四．按要求改写句子。

1. She can walk quickly.

I ________ ________quickly . (否定句)

2. They can paint the wall well. （一般疑问句）

_______ they ______ the wall well?

3. Tom must carry the box into the room. （否定句）

Tom ________ ________ carry the box into the room.

4. She should reach the station early. (否定句)

She _______ _______ reach the station early.