2019-2020年高中英语人教版必修三Unit4 Reading学案及答案

2019-2020年高中英语人教版必修三Unit4 Reading学案及答案
2019-2020年高中英语人教版必修三Unit4 Reading学案及答案

2019-2020学年高中英语人教版必修三

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

主编:审核:编号:3401班级:______ 姓名:________ 使用日期:_________

【学习目标】:1. To learn some useful words and expressions in the text.

2. To learn the development of life.

3. To improve some reading skills, and learn the organization of the text.

4. Train Ss’ interests in science and stimulate their love for astronomy.

【教学重点】:1. Get the Ss to know the development of life.

2. To improve the student s’ reading ability.

【Teaching procedures】

课前预习【Pre-Class】:Vocabulary learning. 【Write and Read】

I.单词检测

1.__________ n.天文学2.__________ n.系统;体系;制度

3.__________ n.宗教;宗教信仰__________ adj.宗教的;信仰宗教的

4.__________ n.学说;理论

5.__________ adj.猛烈的;激烈的;强暴的__________ n.暴力

6.__________ n.大气层;气氛7.__________ prep.与……不同;不像

8.__________ adj.基本的;基础的

9.__________ adj.有害的__________ n. &vt.伤害;损害

10.__________ n.链子;连锁;锁链11.__________ vi.&vt.乘;增加

12.__________ vi.生存;存在__________ n.存在

13.__________ adv.因此;于是

14.__________ n.迷;难题;vt.&vi.(使)迷惑;(使)为难

II. 重点短语

1.____________依靠;依赖;取决于2.___________ 及时;终于

3.____________ 各种各样的4._____________ 下蛋

5. ________________ 产生;分娩6._____________ 轮到某人

7.________________ 阻止;制止

【课堂探究】

Step1 lead in-warming up

1. In our solar system eight planets circle around the sun. What are they?

(Note:According to the present day scientific study, there are only eight planets, with the Pluto excluded.) Keys: The Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

2. Each religion and culture has its own ideas about how life began on earth. What do you know?

Step2 Pre-reading

1.The origin of life on earth is a question that interests astronomers. What do you know about the scientific theory on the earth?

2. Read the title and predict what the reading will be about, then check if you are right.

Step3 Reading Comprehending

I. Skimming-Skim the passage and match the main idea with each paragraph.

Para. 1 _____ A.The formation(形成) of the earth.

Para. 2 _____ B.The importance of water for life.

Para. 3 ______ C.A widely accepted theory about the formation of the universe.

Para. 4 ______ D.The arrival of humans and their impact on the earth.

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

Ⅱ. True(T) or False(F).

1.It was not until between 4. 5 and 3. 8 billion years ago that people knew what the earth was to become. ( ) 2.Water began to appear on the surface of the earth before gases were produced. ( )

3.The global warming will have a great effect on human beings. ( )

Ⅲ. Choose the best answer according to the text.

1.What began to appear on the earth's surface when it cooled down?

A.Water. B.Gases. C.Acids.

2.From the last paragraph we can infer that the author is ________.

A.confident B.sad C.concerned

3.What does the word “they” in the sentences “It exploded loudly with fire and rock. They were in time to produce carbon dioxide,nitrogen,water vapour and. . .” refer to?

A.Planets. B.Fire and rock. C.Gases.

4.Which is the right order of the development of life?

A.Small clever animals→shellfish→dinosaurs→mammals.

B.Shellfish→dinosaurs→small clever animals→mammals.

C.Shellfish→dinosaurs→mammals→small clever animals.

5.Why were mammals different from other life forms?

A.Because they gave birth to young baby animals and produced milk to feed them.

B.Because they produced young generally by laying eggs.

C.Because they were able to live on land as well as in the water.

IV. Fill in the blanks according to the text.

【课堂巩固练习】Fill in the blanks according to the reading passage.

For several billion years after the “Big Bang” ,the earth was just 1._____ cloud of dust. Between 4. 5 and 3. 8 billion years ago,the dust settled into a solid globe. The earth became so violent and it exploded loudly with fire and rock. They were in time 2. __________(produce) many things,which were to make the earth's atmosphere. As the earth cooled down,water began to appear on 3.______ surface. The continued presence of water allowed the earth to dissolve 4.__________ (harm) gases and acids into the oceans and seas. This produced a chain reaction,which made 5._________ possible for life to develop. Many millions of years later,the first extremely small plants multiplied and filled the oceans and seas 6. _________ oxygen. This encouraged the later 7.____________(develop) of early shellfish and all sorts of fish. Finally,some small clever animals,now with hands and feet ,appeared and spread all over the earth. They are putting too much carbon dioxide into the atmosphere, 8. _________ prevents heat from escaping from the earth into space. 9. _______ life will continue on the earth for millions of years to come will depend on whether this problem can 10. ____ ( solve ).

Unit 4 Astronomy: the science of the stars—Reading学案参考答案

Step1 Vocabulary learning

Ⅰ. 单词检测

1.astronomy n.天文学

2.system n.系统;体系;制度

3.religion n.宗教;宗教信仰

religious adj. 宗教的;信仰宗教的

4.theory n.学说;理论

5.violent adj. 猛烈的;激烈的;强暴的

violence n.暴力

6.atmosphere n.大气层;气氛

7.unlike prep. 与……不同;不像

8.fundamental adj. 基本的;基础的

9.harmful adj. 有害的

harm n. &vt. 伤害;损害

10.chain n.链子;连锁;锁链

11.multiply vi. &vt. 乘;增加

12.exist vi. 生存;存在

existence n.存在

13.thus adv. 因此;于是

14.puzzle n.迷;难题;vt. &vi. (使)迷惑;(使)为难

Ⅱ. 短语默写

1.depend on依靠;依赖;取决于

2.in time及时;终于

3.all sorts of各种各样的

4.lay eggs下蛋

5.give birth to 产生;分娩

6.in one's turn 轮到某人

7.prevent. . . from 阻止;制止

Step3 Reading Comprehending

Ⅰ. Match the main idea with each paragraph.

Para. 1(C) A.The formation(形成) of the earth.

Para. 2(A) B.The importance of water for life.

Para. 3(B) C.A widely accepted theory about the

formation of the universe.

Para. 4(E) D.The arrival of humans and their impact on the earth.

Para. 5(D) E.The development of plants and animals on the earth.

Ⅱ. True(T) or False(F).

1.It was not until between 4. 5 and 3. 8 billion years ago that people knew what the earth was to become. (T) 2.Water began to appear on the surface of the earth before gases were produced. (F)

3.The global warming will have a great effect on human beings. (T)

Ⅲ. Choose the best answer according to the text.

1.What began to appear on the earth's surface when it cooled down?

A.Water. B.Gases. C.Acids.

答案 A

2.From the last paragraph we can infer that the author is ________.

A.confident B.sad C.concerned

答案 C

3.What does the word “they” in the sentences “It exploded loudly with fire and rock. They were in time to produce carbon dioxide,nitrogen,water vapour and. . .” refer to?

A.Planets. B.Fire and rock. C.Gases.

答案 B

4.Which is the right order of the development of life?

A.Small clever animals→shellfish→dinosaurs→mammals.

B.Shellfish→dinosaurs→small clever animals→mammals.

C.Shellfish→dinosaurs→mammals→small clever animals.

答案 C

5.Why were mammals different from other life forms?

A.Because they gave birth to young baby animals and produced milk to feed them.

B.Because they produced young generally by laying eggs.

C.Because they were able to live on land as well as in the water.

答案 A

IV.Fill in the blanks according to the text.

【课堂巩固练习】Fill in the blanks according to the reading passage.

For several billion years after the “Big Bang” ,the earth was just 1._____ cloud of dust. Between 4. 5 and 3. 8 billion years ago,the dust settled into a solid globe. The earth became so violent and it exploded loudly with fire and rock. They were in time 2. __________(produce) many things,which were to make the earth's atmosphere. As the earth cooleddown,water began to appear on 3.______ surface. The continued presence of water allowed the earth to dissolve 4.__________ (harm) gases and acids into the oceans and seas. This produced a chain reaction,which made 5._________ possible for life to develop. Many millions of years later,the first extremely small plants multiplied and filled the oceans and seas 6._________ oxygen. This encouraged the later 7.____________(develop) of early shellfish and all sorts of fish. Finally,some small clever animals,now with hands and feet ,appeared and spread all over the earth. They are putting too much carbon dioxide into the atmosphere, 8. _________ prevents heat from escaping from the earth into space. 9. _______ life will continue on the earth for millions of years to come will depend on whether this problem can

10.____________( solve ).

参考答案:1. a 2. to produce 3. its 4. harmful 5. it 6. with

7. development 8. which 9. Whether 10. be solved

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