牛津版 (深圳&广州)七年级下册Unit 8 From hobby to career一等奖ppt课件

牛津深圳（广州）版七年级下册

Unit 8  From hobby to career

语法1：when引导的时间状语从句知识点讲解

一、时间状语从句定义

时间状语从句用于说明主句动作发生或进行的时间。在复合句中，由时间连接词引导的状语从句叫做时间状语从句。时间状语从句的连接词主要有：when, while, as soon as, before, after, until, as.

如：

When she lived in London, she made a lot of new friends.

当她在伦敦居住时，她结交了很多新朋友。

While the boy was playing in the room, his brother began to cry.

当那个男孩正在房间玩的时候，他弟弟开始哭起来。

I will tell him the news as soon as I arrive there.

我一到那里，就会告诉他这个消息。

I had a shower before I went to bed.

我在睡觉之前洗了个澡。

As time goes by, I like this city better and better.

随着时间的推移，我越来越喜欢这座城市。

二、when引导的时间状语从句

(1)构成

when作为连接副词，引导时间状语从句，意为“当……时候”。

  when从句可以放在主句前，也可以放在主句后。当从句置于主句前时，从句应加逗号（，）。

Eg: When I went out, it started to rain.我出去的时候，天下起了雨。

  It started to rain when I went out.我出去的时候，天下起了雨。

【即学即练】

 (   )1 ______ someone catches a big fish, everyone gets ______.

 A. When; exciting   B. Before; exciting   C. When; excited    D. Before; excited

    (   )2 Grandma fell asleep ______ she was listening to the music.

     A. after     B. before      C. when     D.if

（2）用法

【即学即练】

一、按要求完成句子。

1. 当他病的时候，他不上学。（完成句子）

 He doesn’t go to school ______ ______ ______ ______.

2. 当下雨的时候，我就坐公交车回家。(翻译成英文)

                                                                .     

3. 当我五岁时，我开始学钢琴。(翻译成英文)

                                                                .     

二、连词成句。

1. get up, when, you, wake me up, please

                                                                .     

2. she, was ill, she, when, stayed, at home

                                                                .     

3. when, grows up, he, wants, he, to be a doctor

                                                                .     

4. I, used to, when, I, be, thin, was young

                                                                .     

5. he, swim, used to, in the river, when, was a child, he

                                                                .     

三、知识拓展

【即学即练】

用when, while, as, as soon as, after, before, until填空

1．_________ he comes tomorrow, I shall ask where he has been.

2．_________ he was speaking, everybody listened carefully.

3．It was already eight o'clock _________ we got there.

4．We'll go to the country at the beginning of June, ______ the summer harvest will start.

5. He had learned Chinese _________ he came to China.

6. _________ the work was done, we sat down to sum up experience.

7. I waited ________ he came back.

8. It was not ________ he took off his eyeglasses that I recognized him.

9. The thieves ran away _________ they caught sight of the police.

10. They decided to go back home _________ their money ran out.

11. __________ I get to the airport, I will phone you to pick me up.

12. They were about to leave ______ it began to rain.

13. He always stay in bed ______ lunch time.

14. I like playing tennis _________ my younger sister prefers watching ball games.

15. _______ she grew older, she became more responsible.