必修二unit4 Animal extinction

1、Animal extinctionLook at these pictures and answer questions:They _a long time ago.disappeared/died outQ1:What are they?Q2:What happened to them?They are _dinosaursWhat might be the reasons for their extinction?GuessingWhen did dinosaurs live?Tens of millions of years ago, long before humans came in

2、to being.When did dinosaurs die out?Dinosaurs died out suddenly about 65 million years ago.How did dinosaurs die out?Maybe thats because a huge rock from space hit the earth and put too much dust into the air or because the earth got too hot to live on.True or false There are many different species

3、of dinosaur and all of them have been found in China.Not long ago, a rare new species of bird-like dinosaur was discovered in Henan Province.a number Liaoning FF3. Some scientists are sure dinosaurs died out because the earth got too hot for the dinosaurs to live on any more.Fthink long before “很久之前

4、很久之前”，引导，引导_从句。从句。 It will be long before +从句从句(很久之后才很久之后才) It will (not) be long before +从句从句(不久就不久就.) Language points 1. They lived on the earth tens of millions of years ago, long before humans came into being时间状语时间状语Ex. It _ long before we_ the resultOf the experiment.A. will not be; will know B

5、. is; will knowC. will not be; know D. is; know拓展：拓展：before long 不久以后不久以后on the earth 在地球上。在地球上。在在earth, sun, moon等表达世等表达世界上独一无二的名词前，要加界上独一无二的名词前，要加the。on earth 究竟；到底。究竟；到底。 e into beingcome into being:形成形成, 产生产生 漏油漏油事件危害事件危害到了许多海鸟的生存，这促使了许多以保护鸟类为到了许多海鸟的生存，这促使了许多以保护鸟类为目标目标的的 社会团体社会团体形成形成_with oil sp

6、ills _many sea birds, which has encouraged _with oil spills _many sea birds, which has encouraged societies to _, whose _ is to save the birdssocieties to _, whose _ is to save the birdsIncidents Incidents harmharmcome into beingcome into beinggoalgoal 我们的学校是我们的学校是1997年年建立的建立的 Our school _ in 1997 O

7、ur school _ in 1997 A B A B set up set up was set upwas set up Our school _ in 1997 Our school _ in 1997 came into beingcame into beingA BA B was come into beingwas come into beingcome into being 不可以用被动语态不可以用被动语态There is a story about how the word “ sandwich”_There is a story about how the word “ sa

8、ndwich”_A came into being B was came into beingA came into being B was came into beingC came to power D was came to powerC came to power D was came to power 3.according toaccording to: 按照，根据按照，根据.所说所说 根据标题根据标题和图片和图片, 这篇文章主要讲的是什么内容？这篇文章主要讲的是什么内容？What is the main idea of the passage _ the _ What is th

9、e main idea of the passage _ the _ and the pictures and the picturesaccording toaccording totitletitle We are paid _ how much work we did.We are paid _ how much work we did. _ many old people, he likes this kind of song._ many old people, he likes this kind of song.A B A B C DC Daccording to accordi

10、ng to according toaccording toas a result ofas a result of With the help of With the help ofIn common withIn common with4. Some scientists think it came after an unexpected incident when incident n. 事件；事变事件；事变The serious incident along the border increased our fears of the war.accident, incident, ev

11、ent这些名词均有这些名词均有“事事故、事件故、事件”之意。之意。accident: 强调偶然或意外发生的不幸事情。强调偶然或意外发生的不幸事情。incident: 既可指小事件或附带事件，又可指既可指小事件或附带事件，又可指政治上具有影响的事件或事变。政治上具有影响的事件或事变。event: 可指任何大小事件，但尤指历史上的可指任何大小事件，但尤指历史上的重大事件。重大事件。 野生动植物保护基金会定期野生动植物保护基金会定期视察视察大熊猫大熊猫保护区保护区，结果结果 那里的大熊猫得到了那里的大熊猫得到了 很好的保护。很好的保护。 他们确保任何大熊猫他们确保任何大熊猫捕猎捕猎者会受到惩罚，者会

12、受到惩罚，毫不留情毫不留情。 The WWF _ the panda_ regularly _The WWF _ the panda_ regularly _ the pandas there are well protected. They make sure that the pandas there are well protected. They make sure that anyoneanyone who _ a panda will be punish _ who _ a panda will be punish _inspectsinspectsreservereserveso

13、 thatso thathuntshunts without mercywithout mercyso thatso that“结果结果”引导结果状语从句引导结果状语从句 Please speak loudly and clearly speak loudly and clearly so thatso that“为了为了”引导目的状语从句引导目的状语从句 sothatsothat“如此如此以至于以至于” Every body lent a hand Every body lent a hand so thatso that The flying carpet travelled The fl

14、ying carpet travelled so so fast fast thatthat next minute they next minute they were in Zimbabwe were in Zimbabwethe work was finished ahead of time.the work was finished ahead of time.(结果结果)everyone can hear youeveryone can hear you( (为了为了) )5.so thatDodoIt stood about a meter (3 feet) tall,weighing about 20 kilograms, living onfruit, and nesting on the ground. The dodo has been extinct since themid-to-late 17th century. It becameextinct in about 1681. Its