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人教版新目标八年级上Unit9 Section A(1a-1c)课件(42页)

发布时间:2014-06-23 12:01:42  

Unit 9 Can you come to my party?

表示能力的回答
A: Can you swim? B: Yes, I can. /No, I can’t.

A: Can you play football?

B: Yes, I can. /No, I can’t.

Language Goals:

Make invitations
Decline invitations accept invitations

Talk about obligations

接受邀请的 回答

A: Can you come to my birthday party?
B: Sure, I’d love \like to.

A: Can you come to my birthday party? B: Sure, I’d love\like to.

拒绝邀请

的回答
A: Can you come to my birthday party? B: Sorry, I can’t. I have to … help my parents.

Work in pairs

自由操练 可参考图片

A: Can you come to my birthday party? B: Sorry, I can’t. …

I have to prepare for an exam .

Explanation
1. can 的用法
(1)表邀请。

若接受邀请,回答为:
OK./All right./Sure./ Of course./Certainly./ Yes(Sure),I’d love(like) to. 若不接受邀请,回答为: Sorry,Ican’t.(+原因)

eg . Can you come to the party?
Yes/Sure,I’d love/like to. Sorry,Ican’t. I have to help my parents.

其他表邀请的句型:

1) Could /Will/Would you come to the party?
2) Would you like /love to come to the party?

3) I hope you come to the party.
4) Please come to the party. 5) How/What about coming to the party? (2)表能力“能,会”否定句 can’t不能 eg. He can swim,but I can’t.

How long can you stay under water?
(3)在否定句,疑问句中表示“不可能”或“一定 不” eg. Can he come ?No,he can’t come.(他会来吗?

2.情态动词“have to”与其他的情态
动词如:“can” , “may” “must”和

“should” 不同。
(1)这4个情态动词没有人称和 数的变化,而have to有。它的第三

人称单数为“has to” ,过去时为
had to, 如:

He should study hard .
他应该好好学习。 He has to study hard . 他不得不好好学习。

(2)这4个情态动词在一般疑问句中
将它们放在句首, 在否定句中直接在他

们后边加not即可。

我们以can为例:
Can he go with us ? 他能和我们一起去吗? He can’t go with us .

他不能和我们一起去。
而“have to”要加助动词do ,

has to要加助动词does ,还原 have to
had to要加助动词did,还原 have to 才可能完成其疑问、否定句。

试将下面三种话分别写成
(1)一般疑问句,并做肯定回答。

(2)否定句。
1: They have to go to the party .

Do they have to go to the party ?
Yes , they do . They don’t have to go to the party.

2:He has to go to see the doctor . Does he have to go to see the doctor? Yes , he does . He doesn’t have to go to see the doctor .

3: She had to have a piano lesson yesterday. Did she have to have a piano lesson yesterday? Yes, she did . She didn’t have to have a piano lesson yesterday.

2

.have to强调客观上需要做某事,即表示外界

? ? ? ? ? ?
?

条件的需要不得不做某事,含有“客观所迫”的 意味,它有人称和数的变化,可用于多

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