情态动词should

第21讲情态动词

【课首沟通】

1、上次的作业检查，核对及讲解。

【课首小测】一、单项选择

1. The members of the drammar club are going to _____ a play on Wednesday to collect money for the disabled.

A. put out

B. put up

C. put on

D. put away

2. Life of Pi is a film _____how a teeenager had a voyage with a tiger.

A. in

B. on

C. of

D. at

3. Some people spent all their money buying a small house in city centre. _________people preferred to live in the countryside.

A. Other

B. The other

C. Others

D. The others

4. Canton Tower is a new symbol of Guangzhou. It is worth __________.

A. to visit

B. visiting

C. to visiting

D. visit

5. Jane is such a kind girl that she always gives a hand ______someone is in trouble.

A. whatever

B. however

C. whoever

D. whenever

6. This new bike ____my younger brother.

A. belong to

B. belongs to

C. is belonging to

D. is blonged to

二．根据中文提示完成下列句子

1. 孩子们应该多与父母交流。

Children should ________more ______their parents.

2. 他们共同合作，把晚会办得非常成功。

They worked together to _______the party ______ ______ ____.

3. 这次比赛给了我一次机会认识很多的朋友。

The competition ______me ____ ______ ______make more new friends.

4. 小张非常累，因为他在周末参加了三场足球比赛。

Xiao Zhnang was very tired, because he ______ ______ ____three football games at the weekend.

【知识梳理】Grammar Modal verb:

should 情态动词should的用法

1. should“应该；应当”，情态动词，多用于劝说他人的错误行为或给予他人一些建议，使用时后面须跟动词原形，人称没有形式上的变化。

I\we 我\我们

You 你\你们}should do some work tonight.

He\She\It\They 他\她\它\他（她）们

2. should否定形式，should not(shouldn’t)“不应该；不应当”

You shouldn’t sit in the sun all day.

They shouldn’t spend too much money.

3. 常用I should或we should表达“对自己而言该做些什么”

I should go home. It’s midnight.

We should invite them for a meal.

常用I shouldn’t或we shouldn’t表达“对自己而言不该做某事”

I shouldn’t spend too much money.

常用you should\shouldn’t来向他人提出建议

You should look for a better job.

You shouldn’t drive so fast.

4. 用should I\we---来向他人寻求建议

Should I write my name here?

What should I say to Helen?

I need a new passport. Where should I go?

5. 常用I think we should及I don’t think you should等来表达自己的观点

I think we should get a new car.

I don’t think you should believe him.

6. 还可以用do you think I should---?来寻求建议

He hasn’t replied to my email. Do you think I should phone him?

What do you think I should give Tom for his birthday?

B. ought to：表示“应当、应该”，与should同义，

但语气较强，强调有义务和必要做某事。

She is your mother, so you ought to support her．

We ought to go and see Mary tomorrow, but I don’t think we will．

ought to的否定形式：ought not to，缩写为oughtn’t to。

One ought not (oughtn't) to cross the street against the red light.

ought to的一般疑问句：把ought放在主语前面，to仍在主语后面。—Ought we to do it at once? —Yes, you ought to.

had better的用法

1. had better“最好”，用于表示对别人的劝告、建议或表示一种愿望，语气比should 更婉转。had better后面也接动词原型，没有人称变化。缩写’d better

You had better go to hospital at once.

Tom, you’d better go there today.

2. had better的否定形式是had better not，缩写形式为’d better not

You had better not miss the last bus.

You’d better not leave for Nanjing the day after tomorrow.

3. 可以用于指现在。

You had better listen to the radio now.

You had better be quiet.

也可以用于指将来。

You had better start tomorrow.

We had better buy the more expensive one. It will last much longer, so it will be