比较级的详细用法ppt课件.ppt

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1、形容词的比较级,Jack is heavy.,Guo Shanshan is heavier than Jack.,Jack,Guo Shanshan,Li Yong is funny.,Pan Changjiang is funnier than Li Yong.,Li Yong,Pan Changjiang,Liu Yifei is thin.,Mr.Wang is thinner than Liu Yifei.,Liu Yifei,Mr.Wang,在对两者进行比较时，形容词要采用比较级形式。形容词比较级之后多用than引出比较的对象。即：比较级+than，than后面连接另一个作比较的人

2、或物。,概念及结构,形容词比较级,1.比较级的构成单音节词和少数双音节词，在词尾加er。单音节形容词比较级变化口诀：比较级要变化，一般词尾加er。词尾若有哑音e，直接加r就可以。一般重读闭音节，末尾辅音须双写。辅音字母加y型，变y为i加er。多音节有规则，原形前面加上more。,二、不规则形容词的比较级最高级,注：older 一般指年龄大小；My father is older than my mother.elder指长幼关系(一般修饰名词作定语);My elder brother is a driver.farther指距离更远；further指抽像的.I want to study En

3、glish further.further reading,用所给的形容词副词的适当形式填空。1.Tom is _(tall)than Jim.2.Li Lei is _(young)boy in his class.3.David has _(many)story books of all the students.4.Li Lei speaks English _(well)in his group.5.Lucy runs _(slow)than Lily.,taller,the youngest,the most,the best,slower,改正下列句子中一处的错误。A Tom co

4、mes to school late than Jim._B.Which do you like better,cats,dogs,or chickens?_C.Who is oldest in our class?_D.He thinks math is importanter than Chinese._E.This work is very harder than that one._F.He lives farer than any other student in your class._,very+原形，very-much,比较级的运用,1.A+be+比较级+than B。表示“A

5、比B更”eg:I am taller than Li Lei.This room is bigger than that one.练习：我的自行车比你的新。My bike is newer than your bike.My bike is newer than _.注：比较必须在同类事物之间进行。,yours,比较级中的代替词,1.that：代替前文中的单数名词或不可数名词。eg:The engine of your car is better than _ of mine.The population of China is larger than _ of America.,the en

6、gine,that,the population,that,2.those：代替前文中的人或物的复数名词。eg:The girls in your class are more beautiful than _ in ours.The ears of a rabbit are longer than _ of a cat.,those,those,2.A+be+数词+名词+比较级+than B.eg:Tom is two years older than I.Nancy is three years younger than Sam.练习：长江比黄河长1000千米。The Changjiang

7、 River is 1000 _ _ _ the Yellow River.姚明比我高1米。Yaoming is 1 _ _ _ I.,3.“比较级+and+比较级”表示“越来越，又又”。eg:It is getting warmer and warmer.You are taller and taller.练习：In winter the weather is getting _ _ _.(越来越冷)I hope you will be _ _ _.(越来越聪明)The life for us is becoming _ _ _.(越来越好),注：在运用“比较级+and+比较级”时，如果遇到

8、多音节的形容词，如：beautiful，其比较级是more beautiful，“越来越漂亮”more beautiful and more beautiful，应该表达为：“more and more beautiful”。即：more and more+多音节形容词。练习：The questions are _ _ _ _.(越来越难)The cars are _ _ _ _.(越来越贵)Computers are _ _ _ _.(越来越重要),4.“The+比较级+主语+动词，the+比较级+主语+动词”表示“越，就越”。eg:The harder you study,the bett

9、er you are.The more you eat,the fatter you are.练习：我们种植越多的树木，空气就会越新鲜。_ _ trees we plant,_ _(fresh)air we will have.,5.相同程度比较的句型：as+形容词或副词原形+as，表示“与一样”。eg:Jack is as tall as Peter.This dress is as espensive as that one.He runs as fast as I.练习：1.This bridge is _ _ _(和一样长)that one.2.My dad is _ _ _(与一样大

10、)my mum.,拓展：A+数词+time(s)+as.as+B。表示“A是B.几倍。”eg:My house is three times as big as yours.这棵树的高度是那棵树两倍。This tree is _ that one.HJX的体重是Mr.Wang的十倍。HJX is _ Mr.Wang.,twice as tall as,three times as heavy as,A+be+the+形容词比较级of the twoA是两者中较,她是两个女孩中较美丽的。She is the more beautiful of the two.,比较级前的修饰语,在英语中常修饰比较级的词有：much,a little,a bit,even,far等。eg:The sun is much bigger than the moon.I am a little taller than Sam.,小贴士：哪些词后用形容词原形1.very、so、quite、too等词后用原级。2.too to(太.而不能.);so that(如此.以致于.);as(so)as 中间用原级。eg:The question is too hard to answer.The boy is so young that he cant go to school.,期末测试,