高中必修三第四单元知识点详解.doc

高中必修三第四单元知识点详解.docUnit 4 Astronomy: the science of the stars
system系统，体系
solar system 太阳系 government systems 政府体系
interest vt・使…感兴趣 sth. nterest sb.
interested
世界上独一无二的东西，前面加定冠词 the,例：the sun, the moon, the earth, the university, the world.
但是名词前若有adj修饰，一般用不定冠词a/ano例：There is a big moon in the sky.
4. start/begin with 以…开始； to start/begin with 首先二行rst of all
wide 做副词表示具体的宽 He lay here, with his eyes wide open./ wide awake.
widely ,广泛的 The book is widely read.
in all directions 四面八方 in the opposite direction 朝相反的方向
to do-般做目的状语，但有时候也可做结果状语。Only to do结果发现常表示意料之外的 结果。
She went to the supermarket, only to find/only to be told that all the salt had been sold out.
& last 持续；维持 其后的介词 for•经常省略。 The meeting lasted (for) three hours.
9. in time及时；终于
on time 按时
一次
at any time任何时候
You will get used to it in 。
in no time 立即；马上 at one time 曾经；一度 at a time
10. atmosphere
大气层，经常与定冠词联用
气氛，氛围
11. unlike 奋。
dislike
at times 有时； 偶尔 from time to time 有时
the atmosphere
The atmosphere over dinner was warm and friendly.
Unlike his brother, he is diligent. 不像弟弟，他很勤
I dislike eating fish. I like eating meat.
12. be fundamental t)对…至关重要，基础 fundamental differences 根本的不同
13. for the first time第一次，为介词短语，一般做时间状语。 The first ime 为连词，连接句子
eggs 下蛋
lay the table 摆桌子
责怪
lay the foundation 奠定基础 开；揭露
lay aside放在一边；积蓄
l