Unit4 Astronomy——the Science of the

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内容标题 必修3 Unit 4 Astronomy: the science of the stars

编稿老师 林静

【本讲教育信息】

一、教学内容

必修3 Unit 4 Astronomy: the science of the stars

（一）重点单词

（二）重点短语

（三）重（难）点句型

二、知识精讲

（一）重点单词

1. system n.[c] 系统；体系；制度systematic adj.

He created a new system of teaching foreign languages.

他创造了一种新的外语教学体系。

The new system has had a disastrous effect on productivity.

新制度对生产率产生了灾难性的影响。

Too much alcohol is bad for the system.

过量饮酒对身体有害。

theory n.学说；理论theoretic adj.

There are many theories about the origin of life.

关于生命起源的学说有很多。

In this way they can better apply theory to practice.

这样他们就能更好地把理论运用到实践中去。

Your plan sounds fine in theory it doesn’t work in practice.

你的计划在理论上听起来不错，但在实践中无法实施。

2. violent adj. 猛烈的；激烈的；粗暴的 violence n.

They are launching a violent attack on the enemy.

他们对敌人展开了猛烈的进攻。

Unit4 Astronomy：the science of the stars

常考单词、高频短语和写作句式

Ⅰ. 常考单词必背

1．harmful adj. 有害的

It's harmful to your eyes to read books in the bus.

在公共汽车上看书对你的眼睛有害。

[快速闪记]

(1)be harmful to... 对……有害

(2)harmless adj. 无害的

harm n. 损害；伤害 v. 对……有害；伤害；损害

2．exist vi. 存在；生存

Nothing exists on the moon as there is no water and no air.

月球上没有东西生存，因为那里没有水和空气。

[快速闪记]

(1)exist in 存在于

exist on 靠……生存

There exist(s)/existed... 某地有/存在……

(2)existence n. 存在；生存

3．puzzle n. 谜；难题 vt.&vi. (使)迷惑；(使)为难

The puzzled look on her face suggested she was puzzling over the puzzling math problem.

她困惑的表情暗示了她正在思考那个令人困惑的数学问题。

[快速闪记]

(1)be in a puzzle 感到困惑；不知如何是好

puzzle about/over 冥思苦想；苦苦思索

(2)puzzling adj. 令人迷惑的

puzzled adj. 感到迷惑的

4．pull n. &vt. 拉(力)；拖；牵引力

She pulled his sleeve to get his attention.

她拉拉他的袖子以引起他的注意。

[快速闪记]

pull down 摧毁、推翻、拆除

Unit 4 Astronomy: the science of the stars

Contents 目录

一、单元教学目标和要求(Teaching aims and demands)

二、教材内容分析(Analysis of the teaching materials)

三、单元预习任务(Pre-unit task）

四、教学安排(Teaching arrangements) 五、教学步骤 (Teaching procedures)

六、背景参考资料(Background knowledge)

七、评价与反思(Assessment and reflection)

一、 教学目标和要求(Teaching aims and demands)

根据《英语新课程标准》（实验稿）关于总目标的具体描述，结合高一学生实际和教材内容，我们将教学目标分为语言知识、语言技能、学习策略、情感态度、文化意识五个方面。

1． 语言知识 （Knowledge）

词汇（Vocabulary）：

能理解、内化、运用以下生词--atmosphere, violent--violence, solid, explode, oxygen, surface,

planet, harmful—harm, development—develop, spread, method, presence, telescope, disappointed,

force, gradually, float, mass,

短语(Phrases and expressions)：

the solar system, in time, carbon dioxide, prevent… from, depend on, cheer up, now that, break

out,

功能(Functions)：学习掌握一些用于陈述问题及给予意见的结构，如：

⼈教版⾼⼀英语必修三Unit4课⽂翻译

⼈教版⾼⼀英语必修三Unit 4课⽂翻译

Unit 4 Astronomy:the science of the stars —Reading—

HOW LIFE BEGAN ON THE EARTH

地球上⽣命的起源

No one knows exactly how the earth began, as it happened so long ago. However, according to a widely accepted theory, the

universe began with a "Big Bang" that threw matter in all directions. After that, atoms began to form and combine to create

stars and other bodies.

没有⼈确切知道地球是怎样开始形成的，因为在很早很早以前它就形成了。然⽽，⼀种普通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。然后，原⼦开始形成并结合成恒星和其他天体。

For several billion years after the "Big Bang", the earth was still just a cloud of dust. 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. The earth became so violent that it was not

clear whether the shape would last or not. It exploded loudly with fire and rock. They were in time to produce carbon, nitrogen,