2014年人教版新目标八年级下Unit7SectionAPeriod3课件（55页）.ppt

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1、Unit 7 Whats the highest mountain in the world?Section APeriod Threeoceanthe Pacific Oceann. 大海；海洋大海；海洋n. 太平洋太平洋Words reviewTo learn to use comparatives and superlatives with adjectives and adverbsTo learn new words: the Pacific OceanCan you translate the following sentences?长江大约长长江大约长6,300千米。千米。The

2、 Yangtze River is about 6,300 kilometers long.Can you translate the following sentences?黄河长黄河长5,464千米。千米。The Yellow River is 5,464 kilometers long.Can you translate the following sentences?明朝的长城大约有明朝的长城大约有8,850千千米长。米长。The Great Wall in Ming dynasty is about 8,850 kilometers long.Can you translate th

3、e following sentences?珠穆朗玛峰高珠穆朗玛峰高8,844.43米，米，所以攀登起来很危险。所以攀登起来很危险。Qomolangma is 8,844.43 meters high and so is very dangerous to climb.The Yangtze River is about 6300 kilometers long.The Yellow River is 5464 kilometers long.The Great Wall in Ming dynasty is about 8,850 kilometers long.Qomolangma is

4、8,844.43 meters high and so is very dangerous to climb.What can you get from the above four sentences?Now lets try to translate the sentences below:1.那个篮球运动员有两米高。那个篮球运动员有两米高。2.那条河只有两米深那条河只有两米深/宽。宽。3.这棵树有两米高。这棵树有两米高。4.那条河长两千米。那条河长两千米。The basketball player is two meters tall.The river is only two mete

5、rs deep/wide.The tree is two meters tall.The river is about two kilometers long.5. 这座山大约有两千米高。这座山大约有两千米高。6. 这个箱子大约有两米高这个箱子大约有两米高/宽宽/长。长。The mountain is about two thousand meters high.The box is about two meters high / wide /long.以上我们已经通过归纳总结和练以上我们已经通过归纳总结和练习对本课的语法内容有了一定的习对本课的语法内容有了一定的了解，下面就让我们根据了解，下

6、面就让我们根据之前练习的考察情之前练习的考察情况进一步选择讲解况进一步选择讲解该语法项的重难点。该语法项的重难点。长度、宽度、高度、深度的表示法长度、宽度、高度、深度的表示法老虎路有老虎路有200米长，而且湿度很重。米长，而且湿度很重。Tiger Path is 200 meters long and has a high humidity.长度、宽度、高度、深度的表示法，长度、宽度、高度、深度的表示法，有一个专门的结构，那就是有一个专门的结构，那就是“基数词基数词 + 单位词单位词 + 形容词形容词”Practise我们走上三层楼，大概我们走上三层楼，大概10米左右高。米左右高。We wal

7、k up three floors, which is about ten meters high.那面镜子有两米长。那面镜子有两米长。The mirror is two meters long.教室有教室有25英尺长，英尺长，20英尺宽。英尺宽。The classroom was 25 feet in length and 20 feet in width.2. 除了以上的表示方法，有时也可以除了以上的表示方法，有时也可以用用“基数词基数词 + 单位词单位词 + in + 长度或者长度或者重量的名词重量的名词”来表示长度、宽度、高来表示长度、宽度、高度、深度。若表示度、深度。若表示重量重量，

8、可以用，可以用in weight结构。结构。Practise这个箱子重这个箱子重9公斤。公斤。The box is 9 kilos.= The box is 9 kilos in weight.那座桥有三米高。那座桥有三米高。The bridge is 3 meters in height.1) Qomolangma is higher than any other mountain in the world.2) The Sahara is the biggest desert in the world.3) The Caspian Sea is the deepest of all the

9、 salt lakes.4) The Nile is the longest river in the world.5) Whats the highest mountain in the world?6) China has the biggest population in the world. 7) Its a lot bigger than the population of the US.8) China is over 5000 years old. It has a much longer history than the US. 9) China is almost as bi

10、g as the US, and it is the biggest country in Asia.10) -Did you know that China is one of the oldest countries in the world? - Yes, I did. Its much older than my country.11) This makes it the longest wall in the world.12) Its the most famous part.13) One of the worlds most dangerous sports is mounta

11、in climbing, and one of the most popular places for this is the Himalayas. 1) Qomolangma is _than any other mountain in the world.2) The Sahara is _ desert in the world.3) The Caspian Sea is _ of all the salt lakes.4) The Nile is _ river in the world.5) Whats _ mountain in the world?Fill in the blan

12、ks.higherthe biggestthe deepestthe longestthe highestgo Ready?6) China has _ population in the world. 7) Its a lot _ than the population of the US.8) China is over 5000 years old. It has a _ _ history than the US. 9) China is almost as _ as the US, and it is the _ country in Asia.the biggestbiggermu

13、ch longerbigbiggest10) -Did you know that China is one of _ countries in the world? - Yes, I did. Its _ _ than my country.11) This makes it _ wall in the world.12) Its _ part.13) One of the worlds _ sports is mountain climbing, and one of _ places for this is the Himalayas. the oldestmuch olderthe l

14、ongestthe most famousmost dangerousthe most popularFill in the blanks with the correct forms of the words in the box.4abig much popular long old high1.The Amazon River is one of the _ rivers in the world. Its a little _ than the Yangtze River.2.Qomolangma is 8,848.43 meters _. Its one of the most _

15、places for serious mountain climbers.longestlongerhighpopularbig much popular long old high3. No ocean in the world is as _ as the Pacific Ocean.4. Although Japan is _ than Canada, it is _ smaller.bigoldermuchWrite two comparisons about two topics. Write true facts.4bTwo cities: Singapore and Kuala

16、Lumpur.1.Kuala Lumpur is as modern as Singapore.2.Singapore is bigger than Kuala Lumpur and has a larger population than Kuala Lumpur.Two animals: Monkey and Dog1.A dog is bigger than a monkey.2.A monkey is smaller than a dog, but it climbs a tree faster than a dog.Pair work4cWrite five questions us

17、ing comparisons. Then ask your partner your questions.1.What is the highest building in our city?2.What is the largest shopping mall in our city?3.Which is the biggest park in our city?4.Which is the longest road in our city?5.Whats the biggest city in China? .以上我们已经通过归纳总结和练以上我们已经通过归纳总结和练习对本课的语法内容有了

18、一定的习对本课的语法内容有了一定的了解，下面就让我们根据了解，下面就让我们根据之前练习的考察情之前练习的考察情况进一步选择讲解况进一步选择讲解该语法项的重难点。该语法项的重难点。形容词和副词的比较级和最高级形容词和副词的比较级和最高级1. 大多数形容词和副词都有三个级。大多数形容词和副词都有三个级。 1) 原级原级: 常用结构常用结构as . as. 像像.一样一样 Zhang Hong is as tall as Tom. 张红和汤姆一样高。张红和汤姆一样高。 2) 比较级比较级 (用于用于两者之间的比较两者之间的比较)常用结构：常用结构：形容词比较级形容词比较级than . He is t

19、aller than I. 他比我高。他比我高。 Grammar 3) 最高级最高级(用于用于三者或三者以上的比较三者或三者以上的比较)，常用结构常用结构: the + 形容词的最高级形容词的最高级of / in . He is the tallest of the three. 他是这三个人中最高的。他是这三个人中最高的。 He is the funniest in his class. 他是他们班最有趣的。他是他们班最有趣的。 2. 形容词、副词比较级和最高形容词、副词比较级和最高规则变化规则变化和和不规则变化不规则变化。 a)规则变化规则变化 1) 一般情况下，一般情况下，单音节或双音节

20、的形容词单音节或双音节的形容词（或（或副词副词）比较级比较级er ， 最高级最高级est 如：如： clevercleverercleverest fewfewerfewest smallsmallersmallest等。等。 2) 以以e结尾的词结尾的词，比较级比较级r，最高级最高级st 即可。即可。 如：如：nicenicernicest cutecutercutest largelargerlargest 3) 以以辅音字母辅音字母y结尾的结尾的变变y为为ier或或est 如如: easyeasiereasiest happyhappierhappiest 再如：再如：early , b

21、usy , heavy , dirty , lazy也也如此。如此。 4) 双写最后一个辅音字母双写最后一个辅音字母er 或或 est的词的词,同学要用心去记。同学要用心去记。 1. fatfatterfattest 2. thinthinnerthinnest 3. hothotterhottest 4. redredderreddest 5. wetwetterwettest 6. bigbiggerbiggest 5) 多音节和部分双音节的词多音节和部分双音节的词需要在形容词需要在形容词原级前原级前more构成构成比较级比较级，the most构构成成最高级最高级。如：。如： beaut

22、iful more beautiful the most beautiful 又如又如: delicious, popular, important, interesting, expensive, creative双音节双音节的词如的词如: careful more careful the most careful useful more useful the most useful少数单音节词少数单音节词也是这样，如：也是这样，如： pleased more pleased the most pleased tiredmore tired the most tired b) 不规则变化：不

23、规则变化： good better best well better best badworse worst many, much more most far farther farthest (距离远距离远) far further furthest (程度深程度深) old elder eldest (长幼长幼) old older oldest (年龄年龄)课时重点回顾课时重点回顾形容词及副词的原级、比较级和最高级。形容词及副词的原级、比较级和最高级。注注: 另附另附word文档。文档。 点击此处链接点击此处链接1. Who would you like to be your assis

24、tant, Jack or David? If I had to choose, David would be the _ (good) choice.2. How was your math exam, Nancy? I think I did it well, although it was _ (difficult) than the last one.I. 用括号内所给单词的适当形式填空。用括号内所给单词的适当形式填空。bettermore difficult3. Did you have a wonderful time at the party? Yes, its the _ (e

25、xciting) one Ive ever been to.4. Id like to know if Linda is the second _ (tall) girl in her class.most excitingtallest5. Now computers are very popular and they are much _ (cheap) than before.6. Look at that model ship. Oh, it looks like a real one. Its just a little _ (small) than the real one.che

26、apersmallerII. Multiple choice 1. My brother has _ books than I. A. much B. more C. many D. most 2. The more you smile, the _ you will feel. A. happy B. happier C. happily D. more happily3. Would you mind staying in such a noisy room? No, but my son needs a _ place to study in. 2011宁波宁波 A. cleaner B

27、. quieter C. safer D. smaller4. The actress is already 50, but she looks _ than she really is. 2011广州广州 A. young B. more young C. more younger D. much younger5. She is _ careful as I, but Im _than you. 2011潍坊潍坊 A. asmuch careful B. somore careful C. asmuch more careful D. sovery careful6. Mr Smith t

28、hought the Century Park was the second _ in Shanghai. 2011上海上海 A. large B. larger C. largest D. very large7. We can jump _ on the moon than on the earth. A. more high B. much C. high D. much higher8. When he heard the good news, he felt _. A. happier B. happiest C. happy D. happily9. The _ he is, th

29、e _ he feels. A. busy; happy B. busiest; happiest C. busier; happier D. busy; happily10. I think English is as _ as maths. A. important B. more important C. most important D. importanter11. What do you think of the dress? Wonderful. I dont think I can find a _ one. 2011河南河南 A. good B. better C. bad

30、D. worst12. That building is about 100 meters _. A. tall B. high C. taller D. higher13. Jone Smith is _ of the two young men. A. strong B. stronger C. the stronger D. the strongest14. Our classroom is _ in the whole school. A. cleanest B. the cleanest C. cleaner D. the cleaner15. I know you are shor

31、ter than your brothers，but you run _. 【2013内蒙古呼和浩特】内蒙古呼和浩特】 A. more faster B. fastest C. more fast D. fast 16. Who runs _, Lily or Michelle? 【2013湖南株洲湖南株洲】 A. slow B. slower C. slowest17. Of all the teams in NBA, I think the Los Angeles Lakers played _ this year.【2010呼和浩特】呼和浩特】 A. most successfully

32、B. the more successfully C. very successfully D. much more1. Jack是他们班最高的男生。是他们班最高的男生。 Jack _ boy _ his class.2. 我现在感觉比昨天好多了。我现在感觉比昨天好多了。 I _ much _ than yesterday. 3. 北京最好的季节是哪个？北京最好的季节是哪个？ 我觉得是秋天。我觉得是秋天。 III. Put the following sentences into English.is the tallest infeel betterWhich is the best sea

33、son in Beijing?I think its autumn.1. Does China develop _ (fast) of all the countries in the world?2. My brother Jimmy writes _ _ (careful) in his class.3. Which shirt do you like _ (good), the white one or the blue one?4. Tom finishes his work _ (quick) than Jim.1. Does China develop _ (fast) of al

34、l the countries in the world?2. My brother Jimmy writes _ _ (careful) in his class.3. Which shirt do you like _ (good), the white one or the blue one?4. Tom finishes his work _ (quick) than Jim.1. Does China develop _ (fast) of all the countries in the world?2. My brother Jimmy writes _ _ (careful)

35、in his class.3. Which shirt do you like _ (good), the white one or the blue one?4. Tom finishes his work _ (quick) than Jim.fastestthe mostbettermore quicklycarefullyIV. 用括号内所给单词的适当形式填空。用括号内所给单词的适当形式填空。Homework1. Review the new words and expressions. 2. Try to write as many sentences as you can using comparisons. (10 sentences at least)To preview the new words and expressionsTo preview the facts of the elephant and panda