北师大英语必修三Unit 9 Wheels—Lesson 3 Clean Machines教案(1)

lesson3 Clean Machines

学案

要点一览：

要点详解：

1. so far 到目前为止，迄今为止

What do you think of the show so far?

到目前为止你觉得这场演出怎么样？

Detective are so far at a loss to explain the reason for his death. 至今侦探对他的死因仍茫然不解。

2. take place 发生，举行

A concert will soon take place.

即将举行一场音乐会。

Great changes have taken place since 1976.

1976以来发生了巨大的变化。

拓展：

take down 写下，拿下来

take up 占，占地方

take turns 轮流

take to 喜欢，染上

take on 接受，雇佣

take off 起飞，脱掉

take for 错当作

take after 模仿，长得像

3. all the time 一直，始终

Air pollution is getting worse all the time.

空气污染越来越严重。

拓展：

ahead of time 提前

at the time 在那时，在那段时间

at one time 从前，一度

at a time 一次，逐一

at times 间或，有时

in time 迟早，及时

from time to time 不时

in no time 立刻，很快

on time 准时

练习：

翻译句子：

1. 科学家们正在做一项迄今为止没人做过的实验。

2．会议即将举行

3．他已经习惯一直在外面吃饭了

4．我们迟早会查明事情的真相

5．他跟他的新同学相处得很好

Keys:

1. The scientists are doing experiments no one has so far attempted.

2. The meeting will take place soon.

3. He is used to eating out all the time.

4. We shall find out the truth early or late.

5. He gets on well with his new classmates.