2021上海英语第8讲-情态动词-学案

辅导讲义

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I'd rather be a sparrow than a snail.

Yes， I would. If I could, I surely would.

I'd rather be a hammer than a nail. Yes, I would. If I could, I surely would. Away, I'd rather sail awa

y Like a swan that's here and gone

A man gets tied his feet on the ground

It gives the world

It's saddest sound, It's saddest sound.

I'd rather be a forest than a street.

Yes I would. If I could, I surely would.

I'd rather feel the earth beneath my feet,

Yes I would. If I could, I surely would.

Away, I'd rather sail away Like a swan that's here and gone

A man gets tied his feet on the ground

It gives the world

It's saddest sound, It's saddest sound.

精讲提升

知识名称

一﹑情态动词

1）本身有一定的词义；

1. 语法特征 2）只能和其他动词原形构成谓语； 3）没有人称，数的变化；

4）除ought ， used 和have 外，后面只能接不带to 的不定式； 5）个别情态动词过去式用来表达更加客气, 委婉的语气, 时态性不强；

【知识梳理1】

1）表肯定推测，意为“一定，必定”(只用于肯定句中)；否定推测用can't ，意为“一定不”。 肯定回答：Yes, ...must. must

2）must 表示主观义务，意为“应该，“必须”

否定回答：No, ...needn’t / don’t have to.

3）mustn't 表示“不准”、“不允许”、“禁止”。

4）只有现在时一种形式(在宾语从句中可以表示过去)

【例题精讲】

例1. The house is dark and quiet, so the Browns _____ have gone to bed.

注意：总结must 与have to 的区别

A. mustn’t, keep

B. needn’t, borrow

C. needn’t, keep

D. mustn’t, have

提高题：

1.--Excuse me, whose book is this?

--It ________ be John’s. It has his name on it.

A. must

B. need

C. can’t

D. can

2.—Must I go to medical school and be a doctor like you, dad?

—No, you _______, son. You’re free to make your own decision.

A. can’t

B. mustn’t

C. shouldn’t

D. needn’t

3.The man ______be my English teacher. He has gone to Canada.

A. might

B. must

C. can’t

D. mustn’t

4. A country has dreams. We teenagers ________ also have dreams. With dreams and hard work, anything amazing

can be created.

A. may

B. must

C. should

D. need

5.According to the new traffic law, everyone in a car _______wear the seat belt.

A. can

B. may

C. must

D. will

6.—Who’s the man over there? Is it Mr. Black?

—It ______ be him. He’s much taller.

A. may not

B. can’t

C. will not

D. mustn’t

7.You ____________ drive your car so fast. It’s very dangerous.

A. wouldn’t

B. shouldn’t

C. couldn’t

D. mightn’t

8.The woman who is talking with Mr. Brown ___ be Miss Li. She has gone to England.

A. can’t

B. must

C. may

D. mustn’t

9.From March 23rd 2013, anyone under the age of 14 ________ go into Disney's US parks alone.

A. couldn't

B. mustn't

C. needn't

D. mightn't

10.--Look at the boy playing basketball on the ground. Is it George?

--It ______ be him. He told me he would play basketball after class, but he’s not sure.

A. mustn’t

B. must

C. can’t

D. may

情态动词问答形式考点备注