牛津译林版九年级下Unit4Reading2课件(共20张PPT)

1、Pre-task Task 1 Revision A: Answer the following questions about the life on Mars.1. When will people move to the planet Mars?2. Why will we leave our own planet Earth ?3. How long does the spacecraft need to get to Mars at present ?4. How long does the spacecraft need to get to Mars in the future ?

2、5. What would food on Mars be like?By the year 2100.Because Earth is becoming more and more crowded and polluted.It takes months.About 20 minutes.Food would probably be in the form of pills and would not be so tasty.6. What will be a problem for people on Mars ?7. How can people prevent this problem

3、 ?8. What are the advantages for people on Mars ?9.Which school would the students study at?10. Where should the students connect their computers ?Gravity.People will have to wear special boots to prevent themselves from floating off into space.a. More space b. More time to relax c. No school.They w

4、ould study at online schools withe-teachers.They should connect their computers to an interplanetary network.Revision B: Fill in the blanks with proper words. Our own planet , earth , is becoming more and more _ and _. Hopefully, we can build a better world on _ by the year 2100. At present , our sp

5、acecraft are too slow to carry large numbers of _ to Mars. By 2100, the _might take only 20 minutes in spacecraft that travel at the speed of light. Food on Mars would probably be in the _ of pills and wound not be so _ as that on the Earth. Gravity could be another problem for people on Mars. The g

6、ravity on Mars is only about_ of that on the Earth . People on Mars have to wear special_ to prevent themselves from_off into the space.crowdedpollutedMarspassengersformjourneytastythree-eighthsbootsfloatingTask1: : Language points. While-task1.Our own planet, the Earth, is becoming more and more cr

7、owded and polluted.more and more crowded 越来越拥挤越来越拥挤more, most 放在多音节形容词、副词前面，帮助构放在多音节形容词、副词前面，帮助构成比较级和最高级。成比较级和最高级。如：如：more beautiful, most slowly这里，这里，more and more 用来加强程度，表示越来越用来加强程度，表示越来越怎么样。相当于：怎么样。相当于：more crowded and more crowded而短形容词则这样构成：而短形容词则这样构成：bigger and bigger 越来越年轻越来越年轻 越来越快越来越快越来越聪明越来

8、越聪明越来越细心越来越细心越来越好越来越好越来越舒服越来越舒服 At the moment , I want you to say a sentence to praise(赞扬赞扬) your partner or your best friend with the “ “comparative + comparative ” ”.comparative + comparative 越来越越来越younger and younger faster and faster clever and clever more and more carefulbetter and better more

9、and more comfortablecrowded用作形容词，意为用作形容词，意为“拥挤的拥挤的”。be crowded with意为意为“充满，挤满充满，挤满”。如：。如：The room was crowded with guests. 房间里挤满了客人。房间里挤满了客人。根据汉语意思完成句子。根据汉语意思完成句子。1. The bus was so _ (拥挤的拥挤的) that I didnt get on it.2. As we get nearer, the image becomes _ (越来越大越来越大). crowdedbigger and bigger2. At pr

10、esent, our spacecraft are too slow to carry large numbers of people to Mars.(1).too +adj.+ to do Sandy 太小了而不能去上学。太小了而不能去上学。Sandy is too young to go to school. so . that .can t .Sandy is so young that she can t go to school. adj. +enough to do .Sandy is not old enough to go to school.=It s time for y

11、ou to make sentences with the sentence structures above.large numbers of 许多，大量，许多，大量，修饰修饰_名词，做主语时，名词，做主语时，谓语动词常用谓语动词常用_形式，相当于形式，相当于a lot of, many。eg. Large numbers of birds fly to the south every winter.(2) large numbers of . manythe number of 的数目的数目 后常接可数名词复数，做主语时，谓语动词常用后常接可数名词复数，做主语时，谓语动词常用单数单数形式。

12、形式。(1)China has _ of people.(2) _ of the population of china is 1.3 million.(3) _ my friends came to my birthday party.a (large) number The number A number of=可数可数复数复数eg.The number of tourists starts to tail off in October. 游客在十月份开始逐渐减少。游客在十月份开始逐渐减少。3. By the year 2100, the journey might only take a

13、bout 20 minutes in spacecraft that travel at the speed of light.光的速度是光的速度是300,000,000 米每米每(per)秒秒.汽车正高速行驶。汽车正高速行驶。我们要全速前进。我们要全速前进。The speed of the light is 300,000,000 meter per second.The cars are driving at high speed.We should move at full speed.at the speed of() 4. The gravity on Mars is only ab

14、out three-eighths of that on Earth.Three-eighths 八分之三八分之三分数在英语中通常是借助于基数词和序分数在英语中通常是借助于基数词和序数词来共同表达的。其中基数词表示分数词来共同表达的。其中基数词表示分子，序数词表示分母。如：子，序数词表示分母。如：one-tenth 十分之一十分之一a third 三分之一三分之一注意：分子除用注意：分子除用one外，也可用外，也可用a；two thirds 三分之二三分之二four fifths 五分之四五分之四但是，但是，1/2不能说不能说a (one) second, 而而要说要说 a (one) hal

15、f。1/4和和3/4可以说可以说 a (one) fourth 和和 three fourths, 但常用但常用a quarter 和和 three quarters表示。表示。如果分子大于如果分子大于1， 分母要用复数形式。分母要用复数形式。如：如： 选择题。选择题。About _ of the students are from foreign countries. (2011山东东营山东东营)A. three four B. three fourthC. third fourth D. three fourths翻译句子。翻译句子。我们班五分之三是女生。我们班五分之三是女生。_ the

16、students in my class_ girls.Three-fifths ofare5.Compared with life on Earth, life on Mars will be better in many pare: examine people or things to see how they are similar and how they are different (v. 比较，对比比较，对比)We carefully compared the first report with the second.我们仔细的对第一份报告和第二份报告我们仔细的对第一份报告和第二

17、份报告进行了对比。进行了对比。compare with 把把相比较相比较 拓展：拓展：compare . to 意为意为“把把比作比作”。Shakespeare compared the world to a stage.莎士比亚把人世比作舞台。莎士比亚把人世比作舞台。 用用compare with 和和 compare to 的正确形式填空。的正确形式填空。1. He cannot _ Shakespeare as a writer of tragedies.2. You cannot _ this war _ the Vietnam war (越南战争越南战争).compare withc

18、ompare to6.Life on Mars would be better in some ways.在很多方面我们都做的很好。在很多方面我们都做的很好。We did well in many ways.in some ways; in many ways; by the way (1). _, do you know how to get to Xishanqiao school?(2). You are very clever, you are right _. (3). It is a good idea to work alone _.By the wayin many waysi

19、n some ways7.Food would most probably be in the form of pills and would not be so tasty.as + adj. / adv. + asAmy 和和sandy 一样苗条。一样苗条。Amy 跳舞没有跳舞没有Sandy跳得优美。跳得优美。Amy is as slim as Sandy.Amy doesn t dance as/so beautifully as Sandy.not as / so + adj. / adv.+ asin the form of 以以形式形式life on Mars Not crowde

20、d/polluted Have more space Robots will do our work. Students will study at home. People will have more time to relax. People will wear special designed boots. No traffic jam Low gravity Food doesnt taste good Travel will make people feel sick. Money is not important Far away from friends on Earth Ad

21、vantagesDisadvantagesTask 2 : : Every group , please give a report.Task3 : : Do More exercises.A.Translate the following phrases.1.以光速运行以光速运行 _ 2.在很多方面在很多方面 _3.飘进太空飘进太空 _ 4.现在，目前现在，目前 _pare with _ 6.large numbers of _travel at the speed of light in many waysfloat off into space at present与与比较比较许多的，许多的， 大量的大量的B. Fill in the blanks with the correct forms of the words in the brackets1.We had a _ meal with he