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1、人教版高一英语必修3,Unit 4 Reading How Life Began on the Earth,河北武邑中学 郭丽梅,八大行星,你知道吗？,(水星Mercury）,（金星Venus）,（火星Mars）,(木星Jupiter),(天王星Uranus）,(海王星Neptune）,（地球 Earth）,(土星 Saturn),Do you want to know more information about the universe?,探索生命起源,Do you know the origin of life on the earth?,Pangu separates the sky
2、from the earth,Nvwa makes human beings,God created the world in seven days,Unit 4,How Life Began on the Earth,Please retell the passage according to the video.,oral practice,speaking,1.The development of the earth(para 1-2),The Big Bang,The Big Bang,(1) After the Big Bang, what happened?,a cloud of
3、dust,a violent solid globe,exploded with fire and rock,produced carbon, nitrogen ,water vapour& gases,Made the earths atmosphere,Water appeared,(4) What appeared on the earth then?,(5) What did the water form?,oceans and seas appeared,水Water is fundamentalto the development of life.,2.The developmen
4、t of life(para3-4),small plants,First,early shellfish,all sorts of fish,green plants on land,insects on land,Next,amphibians on land and in the water,Green plants grew into forests Later,reptiles on land,dinosaurs on land,(1) What life developed after forests appeared?,After that,mammals on land,(2)
5、 What life developed after dinosaurs?,small clever animals,(3) What life developed after mammals?,Finally,任务型学习 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 the Big Bang Para. 4 D. Th
6、e arrival of humans and their impact on the earth. Para. 5 E.The development of plants and animals on the earth.,Put the right order of development of life into a timeline,1. Insects and amphibians appeared. 2. Dinosaurs appeared.3. The earth became a solid ball. 4.Small plants grew on the water. 5.
7、 Reptiles appeared. 6. Plants began to grow on dry land. 7. The earth was a cloud of dust 8. Water appeared on the earth 9. Shellfish and other fish appeared. 10. The universe began with a “Big Bang”. 11. Clever animals with hands and feet appeared 12 Mammals appeared,Fill in the blanks according to
8、 the text After the “Big Bang”, the earth was just a cloud of dust. It _ loudly with fire and rock, which were _ to produce the water vapour, _ and other gases. Then small plants grew. They _and filled the oceans and seas with oxygen.,exploded,in time,carbon dioxide,multiplied,Many millions of years
9、 later， the first green plants began to _on land. When the plants grew into forests, reptiles appeared _. They produced young generally by _eggs.,appear,laying,for the first time,When dinosaurs disappeared, mammals became more _. Now small clever animals with_ appeared and _ all over the world.,impo
10、rtant,hands and feet,spread,As time went by, they covered the earth and they are putting too much carbon dioxide into the_, which _ heat_ the earth into space. Whether life will continue on earth for millions of years to come will _ whether this problem can be solved.,atmosphere,prevents,from,depend
11、 on,Discussion,1.Why was the earth different from the other planets? 2.Why did the plants grow before the animals came? 3.Why is it wrong to show films with dinosaurs and people together? 4.What problem is caused by human beings?,They are putting too much carbon dioxide into the atmosphere, which pr
12、events heat from escaping from the earth into space.,The earth may become too hot to live on .,The earth is becoming hotter and hotter,What do you want to say ?,Heal the world拯救地球,One Earth, One Home 一个地球，一个家园 Heal the world 拯救这世界 Make it a better place 让她变得更美好 For you and for me and the entire human race. 为你、为我、为了全人类,Homework 1.Write a report about what you will do to protect the earth. 2.Find out the useful expressions and language points in the text. 3.Underline the difficult sentences and analyze them.,Bye-Bye!,