比较级最高级课件best.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,专题：形容词，副词比较级、最高级,(,一,),1.,形容词，副词比较级和最高级的概念。,形容词和副词可以靠改变形式来表示程度的不同。我们把这种变化形式叫做比较等级。要比较两个或两个以上的人或物时，就必须用形容词的比较级和最高级。,形容词、副词有三个级：原级,(Positive Degree),，比较级,(Comparative Degree),和最高级,(Superlative Degree),。,写出下列词的反义词,tall-,thin-,long-,calm-,funny-,Sad-,short,heavy,short,wild,serious,happy,写出下列词的比较级形式,tall,short,big,thin,calm,nice-,taller,shorter,bigger,thinner,calmer,nicer,happy-,easy-,heavy-,hot-,clean-,dirty-,happier,easier,heavier,hotter,cleaner,dirtier,serious-,beautiful-,interesting-,important-,difficult-,athletic,delicious-,more serious,more beautiful,more interesting,more important,more difficult,more athletic,more delicious,形容词的比较级和最高级的构成方法,：,单音节和少数双音节形容词、副词的规则变化情况：,a.,在原级的词尾加,-er,变为比较级，加,-est,变为最高级。,e.g.short(,原级,)-shorter(,比较级,)-shortest(,最高级,),long(,原级,)-longer(,比较级,)-longest(,最高级,),b.,如原级以,e,结尾，则比较级只加,-r,，最高级只加,-st,。,e.g.large-larger-largest nice-nicer-nicest,c.,如原级以“辅音字母,+y”,结尾，要将,y,改为,i,，再加,-er,，,-est,。,e.g.busy-busier-busiest easy-easier-easiest,d.,原级以重读闭音节结尾，而且末尾只有一个辅音字母,(,不含字母组合,er,等,),，要双写这个辅音字母，再加,-er,，,-est,。,e.g.fat-fatter-fattest big-bigger-biggest,.,其他双音节词和多音节词都在前面加,more,most,构成比较级及最高级：,原级 比较级 最高级,important more important most important,difficult more difficult most difficult,interesting more interesting most interesting,useful more useful most useful,有几个形容词有特殊的比较级和最高级形式：,原级 比较级 最高级,good well better best,bad,，,ill worse worst,many much more most,little less least,far farther further farthest furthest,old older,，,elder oldest,，,eldest,小贴士,:,要注意有几个形容词的比较级和最高级有两种不同的形式，它们的意思也不同。,e.g.old-older,较旧，较老,-oldest,最旧，最老,/old-elder,较年长,-eldest,最年长,far-farther,较远,-farthest,最远,(,指距离,)/far-further,进一步,-furthest,最深,(,指程度,),short curly hair,short,fat,outgoing,wild,long hair,tall,thin,easygoing,calm,She was short and fat.She has short curly hair.She,was wild and outgoing.,But now,She is taller and thinner.She has longer,hair than before.She is calmer and more easygoing,.,Before,now,3.,形容词比较级的用法和相关句型。,表示两者“相等”用“,as+,形容词原级,+as+,比较对象”。,e.g.He is as tall as his mother,English is as interesting as math.,表示“不如”或“不相等”用“,not+as,so形容词原级,+as+,比较对象”。,e.g.It is not so,as cold today as yesterday,Jack is not so/as tall as Tom.,表示倍数，如“一半两倍,/3,倍,4,倍,”,等用“,half,twice,three,four,times+asas”,结构。,e.g.I study twice as hard as you,This room is three times as large as that one.,用“形容词比较级,+than,引导的从句”进行两者的比较。,e.g.The earth is bigger than the moon,This dress is more expensive than that one.,强调比较级超出比较程度时，形容词的比较级前可用,much,，,far,，,a lot,，,no,，,a little,，,even,，,any,等状语来修饰。,e.g.My brother is much older than I.,This bike is far better than that one.,由,and,连接同一个形容词的两个比较级，可以表示“越来越,”,。,e.g.Im getting fatter and fatter,I think English is becoming more and more difficult.,用“,the+,比较级,+the+,比较级,”,，表示“越,就越,”,。,e.g.The more you read,，,the more knowledge you will get,The less junk food you eat,the healthier you feel.,比较级,+of the two,表示两者中较,的（,比较级前加,the,）,John is the clever of the two boys.,Of the two boys,John is the clever.,最高级,+of,或,in,表示,中最的,Eg:Jack is the tallest in their class.,China is the largest one of all the Asian countries.(,注意一定地域空间用,in,，一类事物范围内用,0f),a+,最高级表示“非常”，,the+,最高级表示“最”。,This is a most difficult question.,This is the most difficult question.,比较要同类，在同一范围内，排除自身的方法用,other,，在不同的范围内，不用,other.,Shanghai is larger than any other city in China.=Shanghai is the largest city in China.,Shanghai is larger than any city in Inida.,1.My brother is two years _(old)than me.,2.Tom is as _(fat)as Jim.,3.-Is your sister _(young)than you?-Yes,4.Who is _(thin),you or Helen?Helen is.,5.Lucy is the_(good)student in our class.,6.Marys hair is as _(long)as Lucys.,7.Which is _(,big,),the sun,the moon or the earth?,8.Who is _(tall),Tom or Sam?,9.Fangfang is not as _(tall)as the other girls.,10.My friends are _(many)than _(she).,练习：单选题,fat,younger,thinner,best,long,the biggest,taller,tall,more,older,hers,三 单项选择。,1.Alan is_ than Linda.A.tall B.taller C.tallest,2.-She is _ than her mother.,-Her mother is also beautiful.,A.beautiful B.beautifuler,C.more beautiful D.most beautiful,3.-Do you always get up as _ as you brother?,-Not always.,A.earliest B.earlier C.the earliest D.early,4.5.He is _more beautiful than I.,A.too B.enough C.much D.very,B,C,D,C,5.This book is _ that one.,A.as better as B.as good as C.as best as,6.The earth is_ the moon.,-I also saw it on the newspaper.,A.as 49 times big as B.49 times as bigger as,C.49 times as big as D.as big as 49 times,7.-It looks like that he is as _ as you.,-Oh,no.He is _ than I.,A.tall,a little tall B.taller,a little tall,C.tall,a little taller D.taller,a little taller,8.-Thanks for taking care of the garden,it is becoming _.-You are welcome.,A.more beautiful and more,B.more beautiful and more beautiful,C.more and more beautiful,B,C,C,C,9.The box is _ heavy.I cant move it.,A.much B.more C.enough D.too,10.Her brother is _ than she.,A.seven year older B.seven year older,C.seven years old D.seven years older,11.The_you stand,the _ you can see.,A.high;far B.higher;farther,C.highest;farthest D.more higher;more farther,12.You should study English hard,because its getting_ in our country.,A.more and more important,B.more important and more important,C.importanter and importanter,D.important and important,D,D,B,A,13.,_you learn,_ you will learn.,A.harder,better,B.the harder,the good,C.the harder,the better,14.,I will try to make _ mistakes in future.,A.less B.more,C.fewer D.much,15.Who is _ student in your class?,A.good B.better,C.best D.the best,C,C,D,Writing:My best friend and I,I,have many friends.But Mary is my best friend.In some ways,we look the same,and in some ways,we look different.We both have long hair and big eyes,although Mary is heavier than me.We both like singing.I am more outgoing than her.She is quieter than me.I am funnier than her,too.My favorite subject is English,her favorite subject is Chinese.,I,dont think differences are important in a friendship.So we are getting on well with.,