人教版高中英语必修二精编ppt课件：Unit4Using-Language.ppt

《人教版高中英语必修二精编ppt课件：Unit4Using-Language.ppt》由会员分享，可在线阅读，更多相关《人教版高中英语必修二精编ppt课件：Unit4Using-Language.ppt（43页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、Reading IIReading IIDinosaur is an animal that we can not see on the earth now.What we see in the museum are the fossils of many kinds of dinosaurs.They were found by the people at home and abroad.Some dinosaurs have long necks and tails,while others look like birds.Using languageReading1.When did d

2、inosaurs live?Tens of millions of years ago.2.When did dinosaurs die out?About 65 million years ago.3.How did dinosaurs die out?A large rock hit the earth and put too much dust into the air.The earth got too hot to live on.True or false 1.There are many different species of dinosaur and all of them

3、have been found in China.2.Not long ago,a rare new species of bird-like dinosaur was discovered in Henan Province.severalLiaoning FF3.Some scientists are sure dinosaurs died out because the earth got too hot for the dinosaurs to live on any more.4.Dinosaurs died out quickly about 65 million years ag

4、o and many animals have died out in the same way.FTthink1._ vt.&vt.咬；叮；刺痛咬；叮；刺痛2._ n.灭绝；消亡灭绝；消亡3._ n.恐龙恐龙 4._ 形成；产生形成；产生5._ n.县；郡县；郡6._ vt.检查；视察检查；视察7._ adj.没料到的；意外的没料到的；意外的bite-bit-bittenextinctiondinosaurcome into beingcountyinspectunexpected8._ n.事件；事变事件；事变9._ n.灰尘；尘土；尘埃灰尘；尘土；尘埃10._ 按照；根据按照；根据所说所

5、说11._ n.消失消失12._ adj.凶猛的；猛烈的凶猛的；猛烈的13._ 以致于；结果以致于；结果14._ n.结局；结尾结局；结尾15._ adv.忠诚地；忠实地忠诚地；忠实地incidentdustaccording todisappearancefierceso thatendingfaithfully1.They lived on the earth tens of millions of years ago,long before humans came into being and their future seemed secure at that time.千百万年前，早

6、在人类产生之千百万年前，早在人类产生之前，它们就生活在地球上，那时它们的未来看上去似乎前，它们就生活在地球上，那时它们的未来看上去似乎很稳定。很稳定。a.on the earth 在地球上。在地球上。在在earth,sun,moon等表达世界上独一无二的名词前等表达世界上独一无二的名词前,要加要加the。e into being 形成；产生形成；产生c.long before 早在早在之前很久之前很久before 作连词连接时间状语从句作连词连接时间状语从句,译为译为“在在之前之前”。It will be long before he gets well again.It took long

7、before he came to help me.It didnt take long before the fire was put out.得过很久他才能恢复。得过很久他才能恢复。过了很久他才来帮我。过了很久他才来帮我。不久就把火扑灭了。不久就把火扑灭了。I made friends with him at last Christmas party,but I had met him several times long before that.我去年圣诞节晚会和他成为朋友，但早在那以前我就我去年圣诞节晚会和他成为朋友，但早在那以前我就见过他几次。见过他几次。The news didnt

8、 surprise me;I had known the factory would close down long before.这消息对我来说一点也不意外，我很久以前这消息对我来说一点也不意外，我很久以前就知道工厂将要倒闭。就知道工厂将要倒闭。long before 表示表示“早在早在之前之前”；也可以表示；也可以表示“很久以前很久以前”It will be+long before 很久以后才很久以后才It wont be long before 不久以后才不久以后才It will be long before he gets well again.不久之后我们就能再见面的。不久之后我们就

9、能再见面的。注意：注意：before 引导的时间状语从句要用引导的时间状语从句要用一般现在时表示将来的含义。一般现在时表示将来的含义。得过很久他才能恢复。得过很久他才能恢复。It wont be long before we meet again.拓展：拓展：before long 不久以后不久以后It _ long before we_ the result ofthe experiment.A.will not be;will know B.is;will knowC.will not be;know D.is;know2.When scientists inspected the bon

10、es,they were surprised to find that these dinosaurs could not only run like the others but also climb trees.科学科学家们观察它们的骨骼时，惊奇地发现它们不仅跟家们观察它们的骨骼时，惊奇地发现它们不仅跟其他的恐龙一样可以跑，而且还可以爬树。其他的恐龙一样可以跑，而且还可以爬树。本句中的本句中的to find that.是不定式作原因状语。不是不定式作原因状语。不定式用来表原因时，常修饰表示情感、心理状定式用来表原因时，常修饰表示情感、心理状态、性格等的形容词，如：态、性格等的形容词，如：h

11、appy，glad，lucky，fortunate，surprised，angry，anxious，cruel，clever，frightened，shocked，sorry，eager，proud，disappointed，foolish，impatient，unwise，naughty等。如：等。如：We were surprised to see him.我们真想不到会见到他。我们真想不到会见到他。We are proud to be young people of new China.作为新中国的青年，我们感到很骄傲。作为新中国的青年，我们感到很骄傲。You were foolish

12、to act like that.你那样做很愚蠢。你那样做很愚蠢。3.They learned this from the way(the bones were joined together).他们通过研究（恐龙他们通过研究（恐龙化石）骨骼的连接方式得出这个结论。化石）骨骼的连接方式得出这个结论。a.learn from从从了解到了解到;向向学学习习 b.the way 后接后接_，且在定语从句中充当，且在定语从句中充当_时，常用关系词时，常用关系词_,_或或_。定语从句定语从句 方式状语方式状语thatwhich省略省略4.Some scientists think it came aft

13、er an unexpected incident when a huge rock from space hit the earth and put too much dust into the air.点拨点拨 本句中本句中when引导定语从句，其先行词为引导定语从句，其先行词为incident。关系副词。关系副词when 的先行词一般是表时的先行词一般是表时间的名词，如间的名词，如:He came last night when I was out.但有时并不直接是表时间的名词，如：但有时并不直接是表时间的名词，如：In 1921 Einstein won the Nobel Prize

14、,and was honored in Germany until the rise of Nazism when he was driven from Germany because he was a Jew.1921年爱因斯坦获得了诺贝尔奖，他在德国年爱因斯坦获得了诺贝尔奖，他在德国很受尊敬。纳粹上台后由于他是犹太人而被很受尊敬。纳粹上台后由于他是犹太人而被赶出了德国。赶出了德国。5.According to a UN report,according to 根据根据,据据说说 According to John,the bank closes at 4 p.m.Each man will

15、 be paid according to his ability.dodo渡渡鸟渡渡鸟Listening DoDo鸟是一种不会飞的鸟，仅产于毛里求斯肥。鸟是一种不会飞的鸟，仅产于毛里求斯肥。拥有肥胖的身子和巨大的嘴。拥有肥胖的身子和巨大的嘴。16世纪后期，欧洲殖民者来到了毛里求斯。不会世纪后期，欧洲殖民者来到了毛里求斯。不会飞又跑不快的飞又跑不快的DoDo鸟很快成为欧洲人来到岛上后主鸟很快成为欧洲人来到岛上后主要的食物来源。人们开始大量的滥捕滥杀可怜的要的食物来源。人们开始大量的滥捕滥杀可怜的DoDo鸟，有时每天可以捕杀到几千只到上万只。鸟，有时每天可以捕杀到几千只到上万只。由于过度的捕杀由

16、于过度的捕杀,很快岛上很快岛上DoDo鸟便得越来越少。鸟便得越来越少。1681年，最后一只年，最后一只DoDo鸟被残忍的杀害后，从此，鸟被残忍的杀害后，从此，地球上再也见不到这种东西了，除非是在博物馆的地球上再也见不到这种东西了，除非是在博物馆的图片中。图片中。Ex 3 Choose the sentence which gives the main idea of the story.Say what is wrong with the other three.Number 2 is correct.Number 1 is wrong.It is not fair to blame the

17、dodo for his disappearance.Number 3 only explain half the story.The dodo and man did become friends but only because man wanted to kill all the dodos as easily as possible.Number 4 is wrong because the other animals and birds did not do much to save the dodo.They warned him but did not help him.List

18、en to the tape and choose the correct answer to complete each sentence.1.The dodo is_.A.fierce B.unkind C.friendly D.foolish2.He wants to believe that Man is telling the truth because _.A.Man is friendly B.he thinks Man is friendly C.he thinks the bears and monkeys lie D.Man is his best friend3.He d

19、idnt realize who had killed many of his friends until _.A.Man told him the truth B.the other birds told him C.he saw how his friend was being killed by Man D.the monkeys told himfierce adj.凶猛的凶猛的,好斗的好斗的The house is guarded by a fierce dog.激烈的激烈的,猛烈的猛烈的The competition for jibs is fierce.SpeakingIn pa

20、irs choose another endangered animal which you know about.Analyse why this animal is endangered.IntentionPurposeIm going toto help/saveI intend/mean/plan toto protectfromI willso thatId rather notId like toIm ready toI feel likein order tobut doto teach them a lesson.to punish those who do harm to w

21、ildlife.Writing Write a letter to WWF based on what you have discussed,asking them to help you save your endangered animal.Dear WWF,My friend,Chen Ting,and I have been doing some research on endangered animals.We found that the habitat of polar bears is disappearing because the ice at the North Pole

22、 is getting warmer.I worry that when is disappears altogether,there will be nowhere for the polar bears to live.Sample letterFirst,I suggest we are very careful with the energy we use.Global warming happens because we are putting too much carbon dioxide into the air.One of the ways we do this is by

23、driving everywhere by car.So I suggest we think carefully before using our cars unnecessarily.Second,instead of using our cars we should think about traveling by bus or by train.These forms of transport are more environmentally friendly and do not put so much carbon dioxide into the atmosphere.Third

24、,we can join WWF which is fighting to save the habitat of the polar bear.We can raise money to help them by making and selling cakes,selling crafts or giving talent shows and charging money for our parents to watch.I hope you will support us in our fight to save the home of the Polar Bears.Yours sincerely,Wu XiaoxinTHANKSTHANKS更多精彩内容请登录：