英语必修2unit4Usinglanguage.ppt

人教课标版人教课标版 高一高一 必修必修 2 Unit 4Reading IIReading IIDinosaur 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.Enjoy the video Using languageReading1. When did dinosaurs 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 have been found in China.2.Not long ago, a rare new species of bird-like dinosaur was discovered in Henan Province.severalLiaoning FF3. 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 ago and many animals have died out in the same way.FTthink1. They lived on the earth tens of millions 2. of years ago, long before humans came 3. into being and their future seemed 4. secure at that time. [点拨点拨1] 本句是一个由本句是一个由and连接的并列句，连接的并列句，其中，其中，long before 引导时间状语从句，引导时间状语从句，进一步解释说明进一步解释说明tens of millions of years ago，意为，意为“在在……之前很久之前很久”。

注意：注意：before long 意为意为“不久以后不久以后”如：如：I knew Tom long before I knew you. 我在认识你之前很久就认识汤姆了我在认识你之前很久就认识汤姆了We hope to finish our experiment before long. 我们希望不久就把实验做完我们希望不久就把实验做完It ___ long before we___ the result ofthe experiment.A. will not be; will know B. is; will knowC. will not be; know D. is; know拓展：拓展：before long 不久以后不久以后e.g.: I hope to see you again before long. We were tired of waiting and hoped the bus would come before long.[点拨点拨2] on the earth 在地球上在在地球上在earth, sun, moon等表达世界上独一无二的名词等表达世界上独一无二的名词前前, 要加要加the。

[点拨点拨3] come into being的意思是的意思是“开始存开始存 在在;发生发生”我们不知道这世界是什么时候存在的　　　　　　　　　　　　　　我们不知道这世界是什么时候存在的　　　　　　　　　　　　　　We don’t know when the world came into being.2. When scientists inspected the bones, they were surprised to find that these dinosaurs could not only run like the others but also climb trees. [点拨点拨] 本句中的本句中的to find that ...是是不定式作不定式作原因状语原因状语不定式用来表原因时，常修饰不定式用来表原因时，常修饰表示表示情感、心理状态、性格情感、心理状态、性格等的形容词，等的形容词，如：如：happy，， 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 to act like that. 你那样做很愚蠢你那样做很愚蠢3. Some scientists think it came after 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，其先行引导定语从句，其先行词为词为incident关系副词关系副词when的先行词一的先行词一般是表时间的名词，如般是表时间的名词，如: He came last night when I was out. 但有时并不直接是表但有时并不直接是表时间的名词，如：时间的名词，如：In 1921 Einstein won the Nobel Prize, 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德国很受尊敬纳粹上台后由于他是犹太人而被赶出了德国太人而被赶出了德国4. 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 be paid according to his ability.dodo渡渡鸟渡渡鸟 Listening Dodo鸟是一种不会飞的鸟，仅产于毛里求鸟是一种不会飞的鸟，仅产于毛里求斯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世纪后期，欧洲殖民者来到了毛里求斯不会飞又跑不快的不会飞又跑不快的Dodo鸟很快成为欧洲人来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捕滥杀可怜的Dodo鸟，有时每天可以捕杀到鸟，有时每天可以捕杀到几千只到上万只几千只到上万只 由于过度的捕杀由于过度的捕杀,很快岛上很快岛上Dodo鸟变得越来鸟变得越来越少。

越少1681年，最后一只年，最后一只Dodo鸟被残忍的杀鸟被残忍的杀害后，从此，地球上再也见不到这种东西了，害后，从此，地球上再也见不到这种东西了，除非是在博物馆的图片中除非是在博物馆的图片中 Ex 3. Listen to the tape and choose the sentence which gives the main idea of the story. Say what is wrong with the other three.1.This story is about how foolish the dodo was.2. This story is about how the dodo became extinct.3. This story is about how the dodo and Man became friends.4. This story is about how the other birds and animals tried to save the dodo.Number 2 is correct.Number 1 is wrong. It is not fair to blame the 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.Listen to the tape and choose the correct answer to complete each sentence.1. The dodo is_____. A. fierce B. unkind C. friendly D. foolish2. 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 friend3. He didn’t 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 himfierce 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What he said met with fierce opposition.他的话语遭到激烈反对。

他的话语遭到激烈反对• 酷烈的酷烈的This heat is really fierce.这样的高温真叫人难受这样的高温真叫人难受SpeakingIn pairs choose another endangered animal which you know about. Analyse why this animal is endangered.*Is it being hunted and killed?*Does it not have enough food?*Is it because its habitat is being threatened?IntentionPurposeI’m going toto help/saveI intend/ mean / plan toto protect…from…I willso that…Discuss what you might do to save it. These phrase may be useful to you.I’d rather not…I’d like toI’m ready toI feel like…in order to…but do…to teacher them a lesson.to punish those who do harm to wildlife.Writing Write a letter to WWF based on what you have discussed, asking them to help you save your endangered animal.AnimalHabitat Reason for problemWhite RhinoAfrica1 Destruction of the grasslands where it lives2 Hunting for horn3 too friendly and so easily caughtPolar bearNorth PoleWarming of the seas means it is losing its habitat of ice flowsAnimalHabitat Reason for problemLeatherback turtlePacific ocean1 Pollutants in the sea2 Eggs taken by predators and / or humans3 Many baby turtles do not grow to be adultsWhales and dolphinsOceans 1 over hunting2 Gas and oil fields in its feeding founds3 Collisions with ships4 Getting caught in fishing netsAnimalHabitat Reason for problemElephantsAsia and Africa1 Loss of habitat2 Conflict with peopleLynxEurope and Asia1 Loss of habitat 2 Conflict with people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 is getting warmer. I worry that when it disappears altogether, there will be nowhere for the polar bears to live. Sample letter First, 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 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, 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 XiaoxinI. 根据下列各句句意及所给单词的首字母或根据下列各句句意及所给单词的首字母或汉语提示，写出该单词的正确形式。

汉语提示，写出该单词的正确形式1.The natural history museum has a 2. special exhibition of _________ (恐龙恐龙).2. The car raised quite a lot of _____ (尘尘土土) as we drove off.3. The police are connecting this _______ (事件事件) with last week’s terrorist bombing.dinosaursdustincident4. Because there is so much unemployment, the competition for jobs is f_____.5. I quite enjoyed the book except the dull e_____.fierce endingII. 根据括号内所给的提示将下列句子翻根据括号内所给的提示将下列句子翻 译成英语译成英语1. 一个新规则很快就要出台了一个新规则很快就要出台了2. (come into being)2. 很奇怪，上火车前，竟然没有人查看我很奇怪，上火车前，竟然没有人查看我的车票。

的车票inspect)A new rule will soon come into being.It was strange that nobody inspected my ticket before I got on the train.3. 根据专家的意见，他们马上放弃了这根据专家的意见，他们马上放弃了这 项试验according to)4. 把它拿近点儿，让我好好看看把它拿近点儿，让我好好看看 (so that)According to expert opinions, they gave up the experiment immediately.Bring it closer so that I can see it better.III. 将下面方框中表示时间的短语填入短将下面方框中表示时间的短语填入短 文中，使短文连贯文中，使短文连贯 long before, not long ago, at that time, after, in such a short time, recentlyThe story happened 1____________. Old Joe and his son Tony were on their way to White River to catch some fish. They started on the trip 2__________ the sun came up. 3______ they had driven for a while, they saw a big tortoise (龟龟) on the road.not long agolong beforeAfter“I haven’t seen such a big tortoise 4_______,” Old Joe said to his son. When I was young, there were a lot of tortoises in White River. They lived happily in the river 5__________. We hadn’t thought they nearly disappeared 6__________________.”“Let’s help it return to the river, shall we?” said his son.“That’s a good idea,” said Old Joe.So they carried the tortoise into their car and put it in the river finally.in such a short time recentlyat that time。