高中英语人教版必修3教案：unit 4 period 1 warming up and read

Unit 4 Astronomy: the science of the stars 单元要览 类别

话题

词汇

y

system

n. 系统; 体系; 制度

religion

n. 宗教; 宗教信仰

theory

论

atom

n. 原子

biologist

家

billion

pron. & n. & adj. （英）万亿; （美）十亿

puzzle

n. 迷; 难题 vt. & vi. （使）迷惑; （使）为难

globe

n. 球体; 地

gravity

n. 万有引n. 生物学

n. 学说; 理

biology dioxide

物

n. 生物学

thus

Science of the stars; the development of life; space travel and gravity

astronom

n. 天文学

exist

vi. 存在; 生存

adv. 因此; 于是

n. 二氧化

课程标准要求掌握的项目

球仪; 地球

violent

adj. 猛烈的; 激烈的; 强暴的

float

力; 重力

vt. & vi. （使）浮动; （使）漂浮 n. 漂浮物

carbon n. 碳 gentle adj. 温和的; 文雅的

atmosphere

unlike

n. 大气层; 气氛

prep. 不同; 不像

physicist

家

climate

n. 物理学

n. 气候

fundamental

harmful

adj. 基本的; 基础的

adj. 有害的

crash vt. & vi. 碰撞; 坠落

spaceship

船

n. 宇宙飞

acid n. 酸 pull n. & vt. 拉; 拖; 牵引力

chain n. 链子; 连锁; 锁链

satellite n. 卫星; 人造卫星

multiply vt. & vi. 乘; 增加

mass n. 质量; 团; 块; 大量

oxygen n. 氧 exhaust vt. 用尽; 耗尽

短语

solar system太阳系 in time及时; 终于

奋

lay eggs下蛋

give birth to产生; 分娩 in one’s turn轮到某人; 接着

block out挡住（光线） cheer up感到高兴; 感到振

now that既然 break out突发; 爆发 watch out密切注视; 当心; 提防

carbon dioxide二氧化碳

重要句型

prevent. . . from阻止; 制止

1. What it was to become was uncertain until between 4. 5 and 3. 8 billion years ago when the dust settled into a solid globe. (be to do; what-clause as the subject)

2. The earth became so violent that it was not clear whether the shape would last or not. (so. . . that; it is/was not+adj. +whether-clause)

3. What is even more important is that as the earth cooled down, water began to appear on its surface. (what-clause as the subject; that-clause as the predicative)

4. It was not immediately obvious that water was to be fundamental to the development of life. \\[it is/was (not)+adj. +that \\]

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