高中英語：Unit4Astronomythescienceofthestars-reading學(xué)案(新人教版必修3)

1、學(xué)案In our solar system eight planets circle around the sun. Do you knowthem?Unit4 Astronomy:the science of the stars-readingHow Life Began on The Earth學(xué)習(xí) 目標(biāo)：1. To learn about the origin of life on the earth.To master the usages of some key language points.To develop the feeling of treasuring the eart

2、h and life.學(xué)習(xí)重點：1.Words:explode multiplyspread2.Expressions: whether or notin time to do sthallowto do in one s turn prevent from學(xué)習(xí)方法：自主探究；小組研討學(xué)習(xí)過程：I .Knowledge linkn . Reading1.Fast-readingParagraph 1Main idea of each paragraphThe importance of water for lifeParagraph 2 The development of plants an

3、d animals on the earthParagraph 3 The formation of the earthParagraph 4A widely accepted theory about the formation ofthe universeParagraph 5 The arrival of humans and their impact on the earthCareful-readingRead the passage carefully and then put the order of development of life into a timeline.A.

4、Insects and amphibians appearedB. Dinosaurs appearedC. The earth was a cloud of dustD. Water appeared on theearthE. The universe began with a “Big Bang F. The earth became a solid ballG. Small plants grew on the waterH. Mammals appearedClever animals with hands and feet appeared J. Reptiles appeaOrd

5、er:Crazy English: (Read the sentences loudly).According to a widely accepted theory, the universe began with a Big Band，that threw matter in all directions.The earth became so violent that it was not clear whether the shape would last or not.What is even more important is that as the earth cooled do

6、wn,water began to appeared on its surface.4.It was not immediately obvious that water was to be fundamental to thedevelopment of life.This produced a chain reaction, which madeit possible for life to develop.Why they suddenly disappeared still remains a mystery.m .Learning about languagel.explode vt

7、.:使爆炸爆發(fā)；破除（迷信等），戳穿，駁倒explore vt.:探究探索，鉆研考察multiply vt.:增加，繁殖 Rabbits multiply rapidly. 乘，使相乘5 multiplied by 4 equals 20. 5乘以 4 等于 20.spread vt.: 伸展；延伸；展開；傳播spread oneself舒展四肢 spread over 延續(xù)They were in time to produce carbon, nitrogen.in time to do sth:及時去做一；in time to sth 合拍子，按節(jié)奏IV. Exercise caf e1

8、.Hearing his son hurt badly by a stranger, the man with anger.A explored B exposed C exploded D explainedKnowledge is much more quickly on the Internet than ever before.A spreading B carrying C developing D growingDon t worry. She will be back to prepare dinner.A on time B in time C at time D for ti

9、meA: Our parents wont allow us to drive their car.B: Our parents us their car.5.A:You ll feel sorry sooner or later for what you ve done to her.B: You ll feel sorry for what youve done to herV . Consolidation （ 鞏固） How life began on the earth?I water II.Small plants in waterShellfish and all sorts of fishInsects on landamphibians on land and in waterreptiles (on land)dinosaurs (on land)forestsmammals (on land) small clever animals with hands and feethumanPlants onEarly shellfish and fishoxygenReptilesMan had evolved from apes.Insects andamphibiansVI.學(xué)后反思:We have only on