资源描述
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,*,Unit 7,Unit 7,Whats the highest mountain,in the world?,Section A 3,Grammar focus4c,Grammar focus,Whats the,highest,mountain in the world?,Qomolangma.,How high is Qomolangma?,Its 8,844.43 meters high.Its,higher,than any other mountain.,Which is the,deepest,salt lake in the world?,The Caspian Sea is the,deepest,of all the salt lakes.,Did you know that China is one of the,oldest,countries in the world?,Yes,I did.Its much,older,than the US.,大多数形容词有三个级。,1.原级:,Structure:,as.as.像.一样,e.g.Tim is,as,tall,as,Tom.,2.比较级(用于两者之间的比较):,Structure：,形容词比较级 than.,e.g.This box is,bigger,than,that one.,形容词和副词的比较级和最高级,3.最高级(用于三者或三者以上的比较):,Structure:,the+形容词的最高级of/in.,e.g.Tom is,the heaviest in our class,.He is,the most popular in,our school,.,规则变化,1)一般情况下，,单音节或双音节的形容词,/,副词比较级,er,，,最高级,est,。如:,clever clever,er,clever,est,few few,er,few,est,small small,er,small,est,等。,形容词、副词的比较级和最高级,规则变化和不规则变化,2)以,e结尾的词,，,比较级,r,，,最高级,st,即可。如：,nice nice,r,nice,st,cute cute,r,cute,st,large large,r,large,st,3)以,辅音字母y结尾的,变y为ier或est,如:easy eas,ier,eas,iest,happy happ,ier,happ,iest,再如：,early,busy,heavy,dirty,lazy,也如此。,4)重读闭音节，单辅音结尾的，,双写这个辅音字母,er,或,est,的词：,fat fat,ter,fat,test,thin thin,ner,thin,nest,hot hot,ter,hot,test,red red,der,red,dest,wet wet,ter,wet,test,big big,ger,big,gest,5),多音节和部分双音节的词,需要在形容词,原级前,more,构成,比较级,，the most,构,成,最高级,。如：,beautiful,more,beautiful,the most,beautiful,又如:,delicious,popular,important,interesting,expensive,creative,双音节,的词如:careful,more,careful,the most,careful useful,more,useful,the most,useful,少数单音节词,也是这样，如：,pleased,more,pleased,the most,pleased,tired,more,tired,the,most,tired,b),不规则变化：,good,better,best,well,better,best,bad,worse,worst,many/much,more,most,far,farther,farthest,(距离远),far,further,furthest,(程度深),old,elder,eldest,(长幼),old,older,oldest,(年龄),三者或三者以上相比，表示最高程度时，用,“,the+,最高级”,的结构表示。这种句式一般常有表示比较范围的,介词短语,。例如：,Zhang,Hua,is,the tallest,of the three.,He works,(the)hardest,in his class.,最高级的用法,2.最高级可被,序数词,以及,much，by far，nearly，almost，by no means，not quite，not really，nothing like,等词语所修饰。例如：,This hat is,by farmuchnearlyalmostnot nearlyby no meansnot quitenothing like,the biggest.How much did,the second,most expensive hat coat?,3.表示“最高程度”的形容词，如,excellent，extreme，perfect,等，没有最高级，也不能用比较级。,4.形容词最高级修饰作表语或介词宾语的名词、代词时，被修饰的词往往省略。,e.g.He is,the tallest(boy),in his class.,5.作状语的副词最高级前可以不加定冠词。,e.g.Of all the boys he came,(the)earliest,.,比较级考点,比较级修饰问题,a little,a bit,even,still,much,a lot,far,等可修饰比较级。,e.g.Tom is,a little taller,than Jim.This book is,much more interesting,than that one.,中考链接,同级比较,e.g.The weather in Beijing is,colder,than that in Xian.Our school is,bigger,than yours.,the+比较级,e.g.Lucy is,the fatter of,the two girls.,“a/an+比较级”表示“又一，再一”,e.g.Lily has a doll,but she wants,a bigger,one.,隐性比较（没有than的情况）,e.g.Who runs,faster,Lucy or Lily?Youd better come,earlier,next time.He worked hard last term,but he works even,harder,this term.,越来越.,比较级,+and+,比较级,b.the+,比较级,+,句子，,the+,比较级,+,句子,e.g.Its getting,colder,and colder,.The more you exercise,the better,you are.,2.最高级考点,说明：形容词的最高级前必须加the；副词的最高级前省略the。,范围问题,e.g.Tom is,the tallest,student in the class.Spring is,the best,season of the year.,“.之一”问题,e.g.Beijing is,one of the biggest,cities in the world.,“the+序数词+最高级”,e.g.I think he is,the second tallest,boy in his class.,3.比较级和最高级的转换,e.g.Tom is,the tallest,student in the class.,=Tom is,taller,than any other student in the class.,=Tom is,taller,than all the other students in the class.,=No other students are,taller,than Tom.,总结：,any other+名词单数,the other+名词复数,否定+比较级=最高级,比较级+极限=最高级,同级比较,as+,adj,./,adv,.+as,e.g.She is,as thin as,Lily.,He writes,as carefully as,Linda.,not+as/so+,adj,./,adv,.+as,e.g.Tony didnt run,so fast as,Carter.,1.Our family has bought a car so we can travel _ than before.（2008陕西）,most easily B.less easily,C.easily D.more easily,2.My father told me a story last night.It is _ one Ive ever heard.,（,2009,陕西）,the funniest B.funniest,C.funnier D.the funnier,学以致用,D,A,3.The _ friends you have,the _ you will be.（2010陕西）,A.more,happy B.many,happy,C.more,happier D.many,happier,4.When he heard a cry for help,he ran out as _ as he could.（2011陕西）,hardly B.quickly,C.finally D.slowly,C,B,5.This place is not big enough for Lucys birthday party.We should find a _ one.（2012陕西）,big B.small,C.bigger D.smaller,C,Fill in the blanks with the correct forms of the words in the box,.,big much popular long old high,1.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.,longest,longer,high,popular,4a,3.No ocean in the world is as _ as,the Pacific Ocean,.,4.Although Japan is _ than Canada,it is _ smaller.,big,older,much,太平洋,n.,大海；海洋,Write two comparisons about two topics.Write true facts,.,Two rivers:_ and _,_,e.g.,4b,The Yangtze River is almost as long as the Amazon River.,The Amazon is longer than the Yangtze,but the Yangtze River is the longest river in China.,the Yangtze Rive
展开阅读全文