How life began on the earth

How life began on the earth 高一英语 必修三第四单元优质课课件

Unit 4 Astronomy:the science of the stars

How life began on the earth 高一英语 必修三第四单元优质课课件

光荣榜叶 娜 李广辉 陈欣欣 刘 凯 解西淼 王尚伦 孙孝雯 何光宇 吕修华 尹春凤 陈文文 王 宁 柳云泽 王 旭

赵媛媛

卢广媛

How life began on the earth 高一英语 必修三第四单元优质课课件

How life began on the earth 高一英语 必修三第四单元优质课课件

How life began on the earth 高一英语 必修三第四单元优质课课件

Words and expressions preview 1.喜欢(v.) 像(prep) ________ like 不喜欢 _________ dislike

like ________

unlike 不 像 _________

puzzled puzzle 迷惑的(adj.)_________ puzzling 感到迷惑的________ 2.迷(n)________harm 有害的 (adj.)___________ 3.伤害(n/v)__________ harmful 4.存在

exist ___________

begin with 5. 以… …作为开始 _____________ system 7.太阳系 solar ____________9.及 时 ____________ in time

6.轮到某人 10.阻止

in one’s turn _____________

give birth to 8.产生、分娩 _____________

prevent ……from _____________________

How life began on the earth 高一英语 必修三第四单元优质课课件

1. To learn about how life began on the earth. 2. To improve the ability of listening, reading

and speaking.3. To master language points in the passage.

4. To learn about humans’ impact on the earth and how to protect the earth

How life began on the earth 高一英语 必修三第四单元优质课课件

土星 木星 金星

海王星天王星

How Life Began on the Earth ?水星 火星

地球

The Solar system

How life began on the earth 高一英语 必修三第四单元优质课课件

Skim the passage and match the main idea with each paragraph.Para. 1 Para. 2 Para. 3 Para. 4 Para. 5

A The formation(形成) of the earth.

B The importance of water for life. CDA widely accepted theory about theformation of the universe. The arrival of humans and their impact(影响) on the earth. The development of plants and animals on the earth.

E

How life began on the earth 高一英语 必修三第四单元优质课课件

Listening

Listen to the tape, then to tell true or false.)

1.Human beings have known the origin of the earth clearly so far.(

2.The appearance of water made it possible for plants and animals

to live on the earth.

(( (

)) )

3.Plants first appeared on land and then in the water.

4.Dinosaurs existed on the earth for over 140 thousand years.

5.It is human beings that are not looking after the earth very well and have caused global warming. ( )

How life began on the earth 高一英语 必修三第四单元优质课课件

Listening Listen to the tape, then to tell true or false.

How life began on the earth 高一英语 必修三第四单元优质课课件

Listening

Listen to the tape, then to tell true or false.

1.Human beings have known the origin of the earth clearly so far.( F )

2.The appearance of water made it possible for plants and animals

to live on the earth.

(T)( F) ( F) ( T)

3.Plants first appeared on land and then in the water.

4.Dinosaurs existed on the earth for over 140 thousand years.

5.It is human beings that are not looking after the earth very well and have caused global warming.

How life began on the earth 高一英语 必修三第四单元优质课课件

Detailed ReadingPara.1 A theory about how the universe was formedPara.2 The formation(形成) of the earth Para.3 The importance of water for lifePart1: The development of the earth

Para.4 The development of plants and animalsThe arrival of humans and their effects on Para.5 the earth

Part2:The development of life.

How life began on the earth 高一英语 必修三第四单元优质课课件

Part.1The development of the earthPara 1-3

How life began on the earth 高一英语 必修三第四单元优质课课件

The development of the earth

How life began on the earth 高一英语 必修三第四单元优质课课件

The formation of the earth

Big Bang

A cloud of dust

A solid globe

The earth

Atmosphere

How life began on the earth 高一英语 必修三第四单元优质课课件

Why is water so important for the beginning of life?Because the continued presence of water

allowed the earth to dissolve harmful gasesand acids into oceans and seas.