高中高一英语必修知识点：Unit4总结

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Unit 4 Astronomy: the science of the stars

1. be fundamental to… 对……是基本的，必需的This is fundamental to a true understanding of the book. 这对真正理解这本书十分重要。

2. in sb’s presence 当着某人的面，有某人在场

She asked them not to discuss the matter in her presence. 她要求他们不要当着她的面讨论这个问题。

3. be harmful to… 对……有害的

= do harm to…The air here is harmful to our health. 这里的空气对我们有害。

4. There is no harm in doing sth. 不妨做某事

= It does no harm to do sth.

He may not be able to help but there’s no harm in asking him. 他可能帮不了忙，但是求他一下倒也无妨。

5. exist on… 靠……生存

= live on…They exist on very little food. 他们靠极少的食物生存。

6. exist in… 存在于……中

Several people believe the Devil exists in the world. 少数人认为世界上存在恶魔。

7. in a puzzle 不知如何是好，很迷惑

I am in a puzzle about what he said. 我对他说的话迷惑不解。

8. in time

1)迟早;最后 = sooner or later; eventually

2)及时;不迟 = not late

You’ll learn how to do it in time. 你早晚能学会做这件事的。

Will I be in time for the train? 我赶得上那趟火车吗?

9. give birth to… 生出，产出

She gave birth to a second child in January. 一月份的时候她生了第二个孩子。

The Chinese nation has given birth to many national heroes and revolutionary leaders. 中华民族养育了很多民族英雄和革命领袖。

10. in one’s turn 轮到某人也(做某事)，也They, in their turn, made a proposal. 他们接着也提了一个建议。

11. by turns 轮流，交替

The two brothers looked after their sick mother by turns. 兄弟俩轮流照看他们生病的母亲。

12. in turn 依次

Each man in turn stood up and spoke. 每个人依次站起来发言。

13. It is one’s turn to do sth. 轮到某人做某事

It’s your turn to wash the dishes. 今天轮到你洗盘子了。