Unit 9 Can you come to my party

单元语法小专题Grammar Focus

语法精讲

情态动词can的用法

　　1.can是情态动词，没有人称和数的变化，但有时态的变化，它的过去式为could,其后可直接接动词原形，总结它的用法如下：

(1)表示能力，意为"能，会"。如：

Can you swim？你会游泳吗？

Can you answer the question?你能回答这个问题吗？

(2)表示许可，意为"可以"，相当于may(比may更口语化，may较正式)。此外，could也可以表示许可，语气更加委婉。如：

Can/May I come in?我可以进来吗？

Can you help me?你能帮我吗？

You may go home now.你现在可以回家了。

Could you help me find it?你能帮我找到它吗？

(3)用于提出邀请。对其作肯定回答通常用"Sure./Of course./Certainly./Yes, I'd love (like) to."等，作否定回答通常用"Sorry/No, I can't."等。

-Can he come to my party?他能来参加我的宴会吗？

-Yes. He'd love to.是的。他很乐意。

-Can you go to the baseball game?你能去看棒球比赛吗？

-Sorry, I can't.对不起，我不能。

(4)用于否定句或疑问句中，表示推测。如：

Mr. Wang can't be at home.王老师不可能在家里。

2.can句式变化

(1)在变否定句时，直接在后面加上"not"，写作can't或cannot。如：

I can speak French.我会讲法语。

→I can't speak French.我不会讲法语。

(2)在变一般疑问句时，can直接移到主语前(原主语的首字母改成小写，第一人称应变为第二人称)即可。如：

I can play the piano.我会弹钢琴。

→Can you play the piano?你会弹钢琴吗？

其肯定回答可用yes, OK或certainly等；否定回答可用no或sorry等。

-Can you look after my books, please?你能照看一下我的书吗？

-OK.可以。

用certainly回答语气更为肯定。

-Can I see your guitar?我能看看你的吉他吗？

-Certainly.当然可以。

语法精练

Ⅰ.单项选择。

( )1.-Lisa, __________you speak French?

-Yes,but only a little.

A.need B.must C.may D.can

( )2.-Would you come to the party tonight?

-Yes,__________.

A.I would be B.I like C.I do D.I'd like to

( )3.-Would you like to join us in playing basketball?

-_____,but I'm afraid I have to study for my science test.

A.I wouldn't B.I'd love to

C.I'd like D.I don't like it

( )4.-Would you like to come to my birthday party next Friday?-_________.

A.I'd love B.Yes,I'd love to

C.I'd like D.Yes,please

( )5.-Could I look at your picture?

-Yes,of course you .

A.could B.can C.will D. might

Ⅱ.仿照例句，完成句子。

例句：-_________?(you,go to the museum)

-Yes,I'd love to. 答案：Can you go to the museum

6.-___________?(you,go skateboarding)

-Sorry,I can't.

7.-_____________?(you,come to my house)

-Sorry,I have to help my sister with her English.

8.-_____________?(he,play the game)

-Yes,he can.

9.-______________?(she,visit the countryside)

-No,she can't.She has to look after her grandpa.

10.-_____________?(they,go camping)

-No,they can't.They're going hiking.

Ⅲ.根据汉语意思完成下列句子，每空一词。

11.他不可能真的病了。

He_________ ________really ill.

12.-你能来我的聚会吗？-是的，我愿意去。

-Can you come to my party?

-Yes,______ ________ ________.

13.他篮球打得不好。

He ______ _______basketball well.

14.我可以用你的词典吗？

_______ _______ _________ your dictionary?

15.-你能和我一起去看电影吗？

-对不起，我不能。

- ______ ______ go to the movies with me?

-_______ , I________ .

16.她可能在家吗？______she ________ at home?

17.你不可以将这本书拿到室外。