b3u4词汇导学案

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Unit 4 Astronomy: the science of the stars (1)

知识与技能：1. Learn some useful words and expressions

2. Understand the text better

过程与方法：explanation; analysis and practice

情感态度与价值观: Arouse students’ interest to search for the mystery of

space.

课前自主学习：（在文章中找到以下短语并翻译。）

combine into__________， become violent___________,

in time____________, the solid surface_____________,

produce the water vapor__________, cool down____________

on the surface__________, stay on…_________

be different from…_________,

go round the sun__________, disappear from…___________,

show one’s quality__________, become part of…________,

develop life_________, grow in the water___________,

fill… with…__________，

millions of years later______________,

grow into forests_____________,

lay eggs_________, animals with hands and feet_________,

spread all over the earth_____________,

develop new methods_________, go by___________

take care of___________, put…into…_____________,

prevent…from…__________, escape from… into…_____________ 2

depend on…_____________, solve a problem_________________

Language points:

1. What it was to become was uncertain until …

Not…until…直到…才…

It is/was not until… that… _____________________

他昨天直到七点才离开学校.

He didn’t leave school until seven o’clock

他们到了中国才能看了长城.

They couldn’t see the Great Wall until they came to China.

2. The earth became so violent that it was not clear whether the shape

would last or not.

2) last v. 持续

好天气只会持续几天

____________________________________________________

友谊长存

____________________________________________________

3. They were in time to produce carbon,…, which were to make important is

in time: sooner or later; eventually 迟早;最终

我迟早会遇见他.

I’ll see him in time.

in time (for sth. /to do sth.): not late及时；不迟 3

她会及时回来准备晚餐.

She will be back in time to prepare dinner.

你认为我们能及时赶上火车吗?

Do you think we can get there _________the train?

与time相关的短语:

on time ____________

In no time___________

at times __________

at a time___________

once upon a time __________________

at one time ____________

from time to time __________________

(sth) be to (do):

①. 不可避免要发生或必须发生。

They said goodbye, little knowing that they were never to meet again.

She is to be honored for this great work.

② 表示按计划、安排要发生的动作

When are they to hand in their plan？

③ 表命令

Tell her she is not to be back late!

4. It was not immediately obvious that water was to be fundamental to

the development of life.

1) It was (not ) obvious that…显而易见的… 4

她是一个诚实的人是显而易见的

2) Be fundamental to 对于…来说是必要的

对于人类来说，保护环境的必要的

5.This produced a chain reaction, which made it possible for life to

develop.

Make it possible for life to develop. 使生命的发展成为可能

make it + adj./n. sb. /sth. to do sth.

组长让我们可以一起合作.

The group leader ____________________________

老师让他们跟容易地明白那个问题.

The teacher _______________________________.

6. …allowed the earth to dissolve harmful gases…

Harmful adj. Opp: harmless harm n.

be harmful to sb./sth.= do harm to sb. /sth.

过多的二氧化碳对环境有害.

Too much carbon dioxide_________________ the environment.

7. Later when the plants grew …for the first time.

For the first/second/third …time 第一/二/三…次 在句子中作时间状语

我那是第一次见到她.I saw her for the first time.

十年后,他第三次来到这里. 5

Ten years later, he came here for the third time.

与the first time 区别: the first time 后可以跟句子,引导时间状语.

这是我第一次见到他. That is_____________________________.

第一次见到他,我就爱上了他.

I loved him _________________________.

Unit 4 Astronomy: the science of the stars(2)

知识与技能：1. Learn some useful words and expressions

2. Understand the text better

3. Consolidation of the language points.

过程与方法：explanation; analysis and practice

情感态度与价值观: Arouse students’ interest to search for the mystery of

space.

课前自主学习：

一 补全下面的短语

1. ________ time 及时；终于

2. _______ eggs 下蛋

3. give birth ______ 产生；分娩

4. ________ one’s turn 轮到某人；接着

5. prevent… _________ 阻止；制止

6. block _______ 挡住（光线） 6

7. cheer ______ 感到高兴

8. ________ that 既然

9. break ________ 突发；爆发

10. watch ______ 密切注视；当心

11. cool _____ 冷却

12. as ______ as 也；还有。。。

13. depend ______ 依靠；依赖

14. get close ____ 靠近

II. Language points

1. The laid eggs too and existed on the earth…

exist in 存在与…之中

exist on 靠…为生

exist by 靠…生存

It was impossible for them to ________such a small income.

The universe ________space.

The wild man __________hunting wild animal in the forest.

2. …because they gave birth to young baby…

give birth to 生小孩

她生了一个健康漂亮的女孩.

有关 birth的短语:

a second birth= rebirth 重生, 再生