Unit 4 Astronomy: the science of the stars知识点学案

一、知识点

1. In our solar system eight planets circle around the sun.在我们的太阳系里八个行星绕太阳运转。

The birds were circling around over the lake. 鸟儿在湖面上空绕圈子。

The teachers are used to circling the pupils' spelling mistakes in red ink. 教师习惯于用红笔圈出学生的拼写错误。

They sat in a circle round the fire.他们围着火坐成一圈。

In political circles there is talk of war. 在政治圈里，有人谈论到（会发生）战争

2. The origin of life on earth is a question that interests astronomers. 地球上生命的起源是个使天文学家感兴趣的问题。

the origins of civilization 文明的起源

He is a German by origin.他原籍德国。

This new theory will certainly interest you.

这新理论肯定会引起你的兴趣。

I find no interest in such things. 我对这些不感兴趣。

His two great interests in life are music and painting. 他一生中的两大爱好是音乐和绘画。

The interests of the individual must be subordinated to the interests of the collective. 个人利益必须服从集体利益。

3. However， according to a widely accepted theory, the universe began with a "Big Bang" that threw matter in all directions. 但是，一种普遍为人们所接受的理论是：宇宙起源于一次大爆炸，这次大爆炸将物质投射到四面八方。

widely accepted 被广泛地接受、认可

begin with 始于 to begin with 起初，首先

Knowledge begins with practice. 认识从实践开始。

To begin with, I couldn't understand every word. 起初，我一句也没弄明白。

In which direction are you going, north or south? 你准备往哪个方向走？向北还是向南？

What direction does this exhibition hall face? 展览馆朝什么方向?

in all directions 四面八方; 各方面 in every direction向各方面, 向四面八方

in the direction of 朝 ... 方向

4. a cloud of dust 一团尘埃

a cloud of ...一大群，一大片

My mother drew my uncle's attention to a cloud of unusual size and shape .

我的妈妈让我的叔叔注意一团形状大小很不规则的云彩。

5. what it was to become was uncertain, ...它会变成什么没有人知道，......

What it was to become 是一个主语从句，在整个句子中作主语；be to do这一结构在本句中表示"即将"。 be to do的其他用法：

1)表示命令、义务、职责等，可译作"应该、必须"。长辈要求晚辈做某事常用这一句型。

2)表示将来要做的事，或按计划、约定要做的事，这一用法主要用于正规文件中，可译作"打算、将要"。3)表示不可避免将要发生的事，或命中注定的事。

I am uncertain what to do. 我确定不了做什么。

6. The earth became so violent that it was not clear whether the shape would last or not. 地球开始变得激烈动荡，不知道这个固体形状是否会继续存在下去。