牛译林7年级下册 Unit7 语法归纳(无答案)

Unit7语法归纳：

一、can/could和may的用法

例句lie can speak good English.

2.The old man could swim across the Yangtze River.

3.——May I use your mobile phone? ——Of course you may.

Can和could 表示能力

（1）can 表示现在的能力，could表示过去的能力。

I can’t speak French, but I can speak English.

She could play the piano when she was only six.

(2) can表示能力时，与be able to 意思相同，但can只有现在时和过去时两种时态，而be able to可以用于各种时态。

Can，could和may 表示许可或可能性

（1）表示许可时，could比can更委婉，而may更正式一些。

——Could I smoke here? ——Sorry, I’m afraid you can’t.

(2) can, could 和may 表示可能性

Can表示推测“可能性”时，往往用于否定句或疑问句。Can’t 意为“不可能”，语气很肯定。Can用在疑问句中，意为“可能”。

He can’t be at home because he has gone to Shanghai.

Could可用于某事有可能发生或可能是事实。

The plane could be delayed by fog.

May 表示推测时，可以用于肯定句或否定句，但一般不用于疑问句。

He may not be at home.

I think we should take raincoats with us, it may rain.

Must 也可以表示肯定地推测。

Mr. Li must be in the room, look, the light is on.

相关练习：

1.Jenny finally got the job because she ________ speak English well.

A.could

B. must

C. might

D. should

2.——I forgot to bring my dictionary. Could I use yours?

——Yes, you ________.

A.can

B. must

C. could

D. should

用can, can’t, could, couldn’t 或may填空

1.__________ you play the piano last year? No, I _________.

2.__________ Anna ride a horse now? Yes, she _________.

3.__________ I borrow some money from you? Sorry, you_________.

句型转换

Sandy can row a boat now.(用2 years ago 作时间状语改写句子)

Sandy ________ ________ a boat two years ago.(同义句)

Sandy ________ ________ _________ ________ a boat two years ago.

二，What和How引导的感叹句

1.用来表达喜、怒、哀、乐等强烈感情的句子叫感叹句。感叹句通常用How或What引导。

What +a/an +形容词+可数名词单数（+主语+谓语）！

What +形容词+可数名词复数（+主语+谓语）！

What +形容词+不可数名词（+主语+谓语）！

How +形容词/副词（+主语+谓语）!

2.在口语中通常用感叹句的省略形式，也就是省略句子的主语和谓语。

3.What 引导的感叹句与How引导的感叹句可互相转换。

What a clever boy he is !=How clever the boy is!

相关练习：

用How 或what补全下面的感叹句

1.________ a lovely song!

2.________ nice weather it is!

3.________ amazing the news is!

4. ________ fast she runs!

5.________ tall buildings they are!

句型转换：

1.The food is very nice. (改成感叹句)

________ _________ _________ it is!

________ _________ the food is!

2.Mike is a careful boy. (改为感叹句)

________ ________ Mike is!

________ ________ __________ _________ Mike is!

词组归纳：

1.make a call on your mobile 用你的手机打个电话

2.by the way 顺便问一下，顺便说说（在交谈中打断话题，以插入题外话或问题）拓展：in the way 妨碍，on the way 在路上，

in a/one way 在某种程度上，in some ways 在某些方面

3.no problem没问题

4.leave sth. + 地点(介词短语) 把某物遗留/忘在某地

（1）——________,do you live with your parents or have a place of your own?

—— I live alone.

A.In some ways

B. By the way

C. On the way

D. In the way

(2) ——Could you help me fix the bike?

——________. Come and get it in half an hour.

A.Not at all

B. No problem

C. I’m sorry I can’t.

D. I hope not.