八年级英语下册Unit7语法比较级和最高级讲解.ppt

1、Grammar 形容词和副词的比较等级形容词和副词的比较等级The dog runs faster than the sheep.The sheep runs fast.LilyTomMikeLily is tall.Tom is taller than Lily.Mike is the tallest of all.英英语中的形容中的形容词和副和副词都有三个等都有三个等级：1.原级（原形）；原级（原形）；2.比较级：表示比较级：表示_之间进行比较；之间进行比较；3.最高级：表示最高级：表示_之间进行比较。之间进行比较。形容词和副词的比较等级形容词和副词的比较等级形容词和副词比较等级的规则变化

2、形容词和副词比较等级的规则变化类别类别构成方法构成方法原级原级比较级比较级最高级最高级单音单音节词节词和少和少数双数双音节音节词词youngtallyoungertalleryoungesttallestnicelargenicerlargernicestlargest一般情况，直一般情况，直接加接加-er,-est以以e结尾的加结尾的加-r,-st类别类别构成方法构成方法原级原级比较级比较级最高级最高级单音单音节词节词和少和少数双数双音节音节词词bigfathotbiggerfatter hotterbiggestfattesthottesthappyeasyhealthyhappierea

3、sierhealthierhappiesteasiesthealthiest以重读闭音节以重读闭音节结尾，如末尾结尾，如末尾只有一个辅音只有一个辅音字母，则双写字母，则双写这个辅音字母，这个辅音字母，再加再加-er,-est以辅音字母加以辅音字母加y结尾的结尾的,变变y为为i,再加再加-er,-est类别类别构成方法构成方法原级原级比较级比较级最高级最高级多音多音节词节词和部和部分双分双音节音节词词importantcarefulinterestingmore important/careful/interestingthe most important/careful/interesting

4、有些双音有些双音节词和多节词和多音节词，音节词，在词前加在词前加more,most形容词和副词比较等级的不规则变化形容词和副词比较等级的不规则变化原级原级比较级比较级最高级最高级good/wellbad/badlymany/muchlittlefaroldbetterbestworseworstmoremostlessleastfarther/furtherfarthest/furthestolder/elderoldest/eldestcheapbigclosefriendlypopularcomfortablegood/wellbad/badly 比较级和最高级填空：比较级和最高级填空：m

5、uch/manyfarcheapercheapestbiggerbiggestcloserclosestfriendlierfriendliestmore popularthe most popularmore comfortable the more comfortablebetterbestworseworstmoremostfartherfarthest形容词和副词比较等级的基本句型形容词和副词比较等级的基本句型等级等级句型句型例句例句原级原级I think this book is as interesting as that one.as+原级原级+as“和和一样一样”等级等级句型句

6、型例句例句原级原级Its not as/so hot today as yesterday.This story is less interesting than that one.not+as/so+原级原级+as“不如不如”less+原级原级+than“不如不如”等级等级句型句型例句例句比较级比较级He runs faster than she.比较级比较级+than.比比.（更）（更）.（基本句型）（基本句型）Flat A is more expensive than Flat B.(同义句同义句)Flat B is _ _ than Flat A.Flat B is _ _ Flat

7、A.Flat B is not _ _ _ Flat A.lessexpensivecheaperthanasexpensiveas等等级级句型句型例句例句比比较较级级The busier we are,the happier we will be.Our country is getting stronger and stronger.the+比较级，比较级，the+比较级比较级“越越越越”比较级比较级+and+比较级比较级“越来越越来越”3._you are,_mistakes you will make.(你你越仔越仔细，做，做错的的题目就目就越少越少）4._you eat,_youll

8、 be.(你吃得你吃得越多越多,就就越胖越胖)The more carefulthe fewerThe morethe fatter1.The girl becomes _.(越来越漂亮）越来越漂亮）more and more beautiful2.The weather is getting _.(越来越槽糕）越来越槽糕）worse and worse等等级级句型句型例句例句比比较较级级This classroom is three times as big as that one.This classroom is twice bigger than that one.He is 10 k

9、ilos heavier than me.倍数倍数+as+原级原级+as是是的几倍的几倍倍数倍数+比较级比较级+than.比比.几倍几倍.数次数次+名词名词+比较级比较级+than“表示两者之表示两者之间相差多少间相差多少”翻译：翻译：1.我的外套比你的贵两倍。我的外套比你的贵两倍。2.我哥哥比我大我哥哥比我大5岁。岁。My coat is twice more expensive than yours.My coat is three times as expensive as yours.My brother is five years older than me.等级等级句型句型例句例句

10、比较级比较级 Jack is the younger of the two boys.the+比较级比较级+of the two.“两者中较为两者中较为的一个的一个”等级等级句型句型例句例句比较级比较级 Which is bigger,the earth or the sun?Who is taller,Jim or Tim?Which/Who.+比较级，比较级，A or B?“哪一个哪一个/谁更谁更.，A还是还是B？”1.Lily gets up _(early)of the two girls.2.Which goes _(slowly),Tom or Jim?3.Which book i

11、s _ (interesting),this one or that one?the earliermore slowly more interesting等级等级句型句型例句例句比较级比较级表达表达最高级最高级1.He is taller than any other boy in his class.2.He is taller than the other boys in his class.1.比较级比较级+than+any other+单数可数名词单数可数名词2.比较级比较级+than+the other+复数可数名词复数可数名词“比其他任何一个都比其他任何一个都.”Sam is t

12、he shortest in his class.(改为同义句改为同义句)Sam is _ than _ _ student in his class.Sam is _ than _ _ students in his class.shorterany othershorterthe other等级等级句型句型例句例句最高级Jim is the tallest boy of all（the boys）.Jim is the tallest boy in his class.the+形容词最高级形容词最高级+名名词词+in/among/of 短语短语 （in+范围，among/of+对象）（基本

13、句型）1.She works _ (careful)in her school.2.Jim goes to bed _(late)in his family.3.I think turkey is _ (delicious)of all.the most carefully latestthe most delicious等级等级句型句型例句例句最最高高级级Which is the biggest,the sun,the moon or the earth?The Yellow River is the second longest river in China.Which/Who.+the+

14、最高级，最高级，A,B or C?“哪一个哪一个/谁更谁更.，A,B还是还是C？”the+序数词序数词+最高最高级级“（在（在.范围内）范围内）第几第几”等级等级句型句型例句例句最高级最高级Shanghai is one of the biggest cities in the world.one of the+最高最高级级+复数名词复数名词“最最的的之一之一”3.Lin Tao is _ in the class because he never gets to school on time.（最（最懒的学生之一）的学生之一）4.Edison was_ in the world.(最最伟大的

15、大的发明家之一）明家之一）one of the laziest studentsone of the greatest inventors1.The Yangtze River is_ river in the world.(第三第三长河）河）the third longest2.The Atlantic is _ ocean in the world.(第二大洋）第二大洋）the second biggest形容词原级、比较级和最高级的修饰词形容词原级、比较级和最高级的修饰词（1）形形容容词词原原级级前前可可以以用用very,quite,rather,too,so,pretty等修饰。等修饰

16、。如：如：The shirt is pretty good.（2）形容词比较级前可以用）形容词比较级前可以用much/far/a lot,even/still,a little/a bit 等修饰。等修饰。如：如：He is much stronger than you.（3）形形容容词词最最高高级级前前一一般般要要加加定定冠冠词词the，但但当当形形容容词词最最高高级级前前有有物物主主代代词词、名名词词所所有有格格等等修修饰饰词词时时，则则不不用用定冠词定冠词the。如：如：This is my busiest day.这是我最忙的一天。这是我最忙的一天。late later-latestearly earlier earliestbigbigger-biggestfluently/difficultmore,most重读闭音节、末尾只有一个重读闭音节、末尾只有一个重读闭音节、末尾只有一个重读闭音节、末尾只有一个辅音字母双写加辅音字母双写加辅音字母双写加辅音字母双写加 erer 或或或或 estest单音节词在词尾比较级单音节词在词尾比较级加加-er或最高级加或最高级加-est以以e