2019-2020学年高中英语人教版必修三Unit4单元导学案

2019-2020学年高中英语人教版必修三Unit4单元导学案

2019-2020学年高中英语人教版必修三

Unit4 Astronomy:the science of the stars(warming up and

reading) Goals

1.to enable the students to talk about Astronomy and origin

of life on earth.

2.to improve the students’ reading ablities of scanning and

skimming

-Lead-in questions to the topic of this unit

1. In our solar system eight planets circle around the sun

What are their names?

2.Do you know any questions that astronomers are

interested in?

Pre-reading

1.The origin of life on earth is a question that interests

astronomers. What do you know about it?

2.There are several ideas about the origin of life on earth and

the idea in our passage is only one of them .

Reading

I. Read the passage carefully and match the main idea with

each paragraph. Para. 1 The formation(形成) of the earth.

Para. 2 The importance of water for life.

Para. 3 A widely accepted theory about the formation of the

universe. Para. 4 The arrival of humans and their impact on the

earth.

Para. 5 The development of plants and animals on the earth.

1.What are the three fundamental elements for

us human beings to survive on the earth?Why was the earth

different from other planets? 3.Why do scientists think there has never been life on the

moon?

4.Why did green plants help life to develop?

5.There used to be nine planets in the solar system. Recently

scientists have decided that one of them can no longer be

considered a planet. Do you know the name of that planet? Do

you know why they removed it?

6.What problem is caused by human beings?

Post-reading

Work in groups and discuss what impact human beings have

on earth.,such as global warming.and get them to talk about the

causes of global warming.

Unit4 language points

Goals

1.to master the following words and expressions:in

time;unlike;multiply;in

turn;prevent…from;exist;puzzle;atmosphere; now that.

2.to enable the students to analyse and understand complex

sentences especially

noun clauses观察in time的用法并总结

They were in time to produce the water..( ).

I’ll see him in time.( )

She will be back in time to prepare dinner.( )

与time相关的短语:

in no time( ) at times( ) at a time ( ) once upon a time ( )

on time ( ) at one time ( ) for the time being from time to

time ( )

at no time ( )

阅读下面句子, 注意prevent ... from的意思和用法。

They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth

into space.

想一想还有其他表达方式吗？请用别的表达方式来替代划线部分

1. There was nothing to prevent her from doing so.

3.We must prevent the water from being polluted.

观察下面turn短语的用法,翻译划线部分

Thus they have,in their turn,become the most important

animals on the planet.

1.The students were taking turns reciting the text.

2.My brother and I usually take turns to cook.

3.I think it’s your turn to do your duty.

4.Each of us in turn had to give a brief introduction to

ourselves.

5.Increased production will ,in turn, lead to increased profits.

分析下面的复杂句并把他们翻成汉语

1.The earth became so violent that it was not clear whether

the shape would last or not.

2.whether life will continue on the earth for millions of years

to come will depend on whether this problem can be solved.

用下面单词的适当形式填空

1.Our problems have _________ (multiply) since last year.

2. Scientists want to know whether life ______ (exist) on other

planets.

3. She listened with a _______ (puzzle) expression on her face.

The car came to a stop just i___ time to prevent an accident.

He usually comes to school early. It’s very _u_____ him to be

so late todayA knowledge of physics is f___ to any understanding

of this problem.

In the teacher’s class, the students often answer his

questions _i__ turn. What can we do to keep the disease _f_____ spreading?

根据汉语提示填入合适单词

1.The new owners have tried to give the restaurant a more

family-friendly

__________ (气氛).

2. （氧气）_____ is a kind of gas that is necessary for most

animals and plants to live.

3.. I was surprised by the _________ (出席) of so many people

at the meeting.

4.The best way to get that _________ (二氧化碳) into the

atmosphere is to warm the entire planet.

把下面句子翻译成汉语

新鲜空气对于身体健康必不可少。(be fundamental to ...)

他不知如何回这封信。(puzzle)

现在轮到我们学会如何与别人相处了。(in one’s turn)

你迟早会成功的。( in time)既然你已经长大了，你自己决定吧.(now that)

Unit4 Grammar–––Noun clause(=)【寻规找矩】请观察下列句子, 注意主

语从句的用法。

1. That the earth travels round the sun is a well-known fact.

2. It is uncertain whether the artist can do it or not.

3. Who will act the lead in the play has not been decided yet.

4. Where the young man has gone is not known.

5. It is not yet decided when and where the test will be given.

【常见错误展示】下列各句均有一处错误，请改正并分析错误的原因。

1. Light travels faster than sound is common knowledge.