人教高中英语必修3Unit4Reading共26张

1、Book 3 Unit 4,Astronomy: the science of the stars,Reading: How life began on the earth,1,Grasp,掌握,the main words and phrases that are relevant to this,text, understand the general information about how earth began and,how life began on the earth by reading,Learning aims,2,Cultivate,培养,the ability of

2、 skimming, scanning, searching for,the main idea in a short time and the speaking ability,3,Realize the importance of protecting our home,earth,金星,地球,火星,木星,土星,天王星,海王星,Scientists now think Pluto is too small to be called a planet,How did life begin on the earth,In Chinese culture,Pangu separated the

3、sky and the earth,Nvwa made human beings with clay,黏土,How did life begin on the earth,In Western culture,God created the world in 7 days,On the 6th day, he created humans: Adam and Eve,All began with a “Big Bang,大爆炸,How did life begin on earth,According to a widely accepted theory,universe,formation

4、,earth,formation,importance,water,development,plants,animals,humans,arrival,influence,Development of,life,Development of,earth,which made it possible for,Development of,earth,P1-3,globe,Development of,life:P4-5,After water appeared , small plants,appeared_, which,encouraged the development of,_,shel

5、lfish and all sorts of fish,on the surface of the water,Next, green plants began to grow _as well,as_,_and _,which can live both on land and in the water,amphibians,on land,land animals,insects,Later, when plants grew into_, _,appeared for the first time. Some huge animals,called _, developed, they

6、produced,young by laying eggs,reptiles,dinosaurs,forests,What kind of animals developed after dinosaurs,About 65 million years ago, dinosaurs,disappeared, after that, _ became more,important,mammals,came into being and,spread,all over the,world,What kind of animals developed after mammals,Humans,The

7、y developed new methods of growing food,hunting and moving around. As time went by,they covered the earth and have become the,most important animals on the planet,small clever animals,Consolidation,Work in pairs to find out the right answer of each question. Then tell,us where did you find the answe

8、r,1. According to a widely accepted theory, the universe began,with _,A. a legend B. a story C. a “Big Bang” D. an earthquake,2. The earth at first was just a cloud of _, then it settled into a solid,_. At last it exploded loudly with _ and _. Choose the right,order of the answers,A,globe rock fire

9、dust,B,dust globe fire rock,C,dust fire rock globe,D,fire rock dust globe,3. Which is,not,the matter to make the earths atmosphere,A. carbon dioxide B. nitrogen C. atoms D. water,vapour,4. In which planets had water appeared,A. Venus and Earth B. Mars and Saturn,C. Earth and Mars D. Jupiter and Eart

10、h,5. What made it possible for life to develop on the earth,A.the oceans and seas B. presence of water,C. a chain reaction D. gases and acid,Consolidation,As a student, what,little things can we,do for the earth,What can we do to take,care of,the earth,use,solar energy,purify,净化,air,plant trees,save

11、 water,recycle,循环,rubbish,prevent desertification,荒漠化,use cloth bags,use plastic,塑料的,bags,take a bus to go to school,ride bikes to go to school,take a car to go to school,set off fireworks,save paper,turn off the tap,水龙头,after using,turn off lights on time,eat more meat,protect animals,Man has but one earth,To save the earth is to save ourselves,Summary,formation,formation,importance,development,arrival,influence,univer