英语人教版八年级下册Unit 7 Section A(3a-4c).ppt

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1、泌阳六中 王青枝Can you translate the following sentences?长江大约长长江大约长6,300千米。千米。The 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 Grea

2、t Wall in Ming dynasty is about 8,850 kilometers long.Can you translate the 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 6,300 kilometers long.The Yellow River is 5,464 kilometers long.

3、The Great Wall in Ming dynasty is about 8,850 kilometers long.Qomolangma is 8,844.43 meters high and so is very dangerous to climb.What can you get from the above four sentences?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

4、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”Practise1.世界上最高的山峰是哪个？世界上最高的山峰是哪个？珠穆朗玛峰。珠穆朗玛峰。Whats _ mountain in the world?Qomolangma.Fill in the blanks according to Grammar Focus.the highest2.珠穆朗玛峰有多高？珠穆朗玛峰有多高？它有它有8844.43米高。它比别的山都米高。它比别的山都 高。高。How high is Qomolangma?Its _.It

5、s _ than any other mountain.8844.43 meters highhigher3.世界上最深的咸水湖是哪个？世界上最深的咸水湖是哪个？里海是世界上最深的咸水湖。里海是世界上最深的咸水湖。Which is _ salt lake in the world?The Caspian Sea is _.the deepestthe deepest of all the salt lakes 4世界上最大的沙漠是哪个？世界上最大的沙漠是哪个？撒哈拉大沙漠。撒哈拉大沙漠。Whats _ desert in the world?._ 5 世界上最长的河流是哪个？世界上最长的河流是

6、哪个？尼罗河。尼罗河。Whats _ river in the world?._the biggestThe Saharathe longestThe Nile 6世界上最长的墻是哪个？世界上最长的墻是哪个？中国的长城。中国的长城。Whats _ wall in the world?._ in China.7 世界上最古老的国家是哪个？世界上最古老的国家是哪个？中国。中国。Whats _ country in the world?.China.the longestThe Great Wallthe oldest8.你知道中国是世界上最古老的国家你知道中国是世界上最古老的国家 之一吗？之一吗？

7、我知道。中国比美国古老。我知道。中国比美国古老。Did you know that China is _ in the world?Yes,I did.Its much older than the US.one of the oldest countries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 2)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

8、：常用结构：形容词比较级形容词比较级than.He is taller 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 b)1)一般情况

9、下，一般情况下，单音节或双音节的形容单音节或双音节的形容词词（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：ea

10、rly,busy,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 2.2.thinthinnerthinnest 3.3.hothotterhottest 4.4.redredderreddest 5.5.wetwetterwettest 6.6.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：beautif

11、ul 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：不规则变化：good b

12、etter 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)我们已经学习过形容词和副词的比较级和最我们已经学习过形容词和副词的比较级和最高级的构成及基本用法。下面我们进一步学高级的构成及基本用法。下面我们进一步学习与其相关的其他知识点。习与其相关的其他知识点。形容词和副词比较级的修饰语形容词和副词比较级的修饰语1.比较级前可

13、加比较级前可加much,a lot,a bit,a little,even,still等词修饰。如：等词修饰。如：You must work much faster.You look a lot happier than you did yesterday.He was too tired to walk any further.This book is even more useful than that one.2.比较级前还可加其他表示数量的词。如：比较级前还可加其他表示数量的词。如：My sister is ten years younger than me.We reached he

14、re two days earlier than the others.形容词和副词最高级的其他用法形容词和副词最高级的其他用法1.形容词最高级前有形容词最高级前有second,third等序数等序数 词修饰时，不用定冠词词修饰时，不用定冠词the。如：。如：The building is the second tallest in this city.The Yellow River is the second longest river in China.2.形容词最高级常用于句型形容词最高级常用于句型“one of+the+形容词最高级形容词最高级+可数名词的复数形可数名词的复数形 式式

15、”，意为，意为“最最之一之一”。如：。如：Song Minjun is one of the most popular girls in our class.Wang Dongyuan is one of the tallest girls in our class.3.形容词和副词的比较级和最高级可以互形容词和副词的比较级和最高级可以互 相转换。如：相转换。如：Jane is taller than the other girls/any other girl in the club.=Jane is the tallest girl in the club.This car runs fa

16、ster than the other ones/any other one.=This car runs fastest of all the cars.1.Kate is young,but Joe is _.2.My shoes are new.My sisters are _ than mine.3.Her bag is heavy,and his is _ than hers.But yours is _ of all.youngernewerheavierthe heaviestFinish the sentences with the right forms of the adj

17、ectives.4.Toms kite is high.Jims is _ than Toms.Mikes is _ of them all.5.Bill is seven.John is nine and Tom is eleven.Tom is _ than John and Bill.Bill is _ than John.Bill is _ and Tom is _ of the three.the highestolderyoungerthe youngestthe oldesthigherFill in the blanks with the correct forms of th

18、e words in the box.big 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 8,844.43 meters _.Its one of the most _ places for serious mountain climbers.longestlongerhighpopular4a3.No ocean in the world is as _ as the

19、Pacific Ocean.4.Although Japan is _ than Canada,it is _ smaller.bigoldermuchbig much popular long old highWrite five questions using comparisons.Then ask your partner your questions.1._2._3._4._5._4cWhat is the highest building in our city?What is the widest street in our city?What is the largest sh

20、opping mall in our city?Which is the biggest park in our city?Which is the longest road in our city?Choose the best answer.1.My brother is _ more outgoing than me.A.many B.little C.much2.October 12th was one of _ days in 2005.Shenzhou-VI was launched(发射）发射）successfully.A.exciting B.more exciting C.t

21、he most exciting3.Which city is _,Beijing,Shanghai or Fuzhou?A.beautiful B.more beautiful C.the most beautiful4._ children there are in a family,_ their life will be.A.The less,the better B.Fewer,richer C.The fewer,the better5.Mobile phones are very popular now and they are _ than before.A.cheap B.c

22、heaper C.the cheapest6.In our city,its _ in July,but its even _ in August.A.hotter,hottest B.hot,hot C.hot,hotter7.Of the two skirts,the pink one is _.A.the nicest B.the nicer C.nicer8.Jacks handwriting is as _ as Mikes.A.good B.better C.best9.We can do the work better with _ money and _ people.A.little,few B.less,fewer C.fewer,less10.Jim is the tallest student in our class and Tom is the second _ one.A.tall B.taller C.tallest 1.Memorize the important structure.2.Make some sentences using as as,less than,more than,one of the3.Do 4b in your exercise books.