英语人教七年级上册形容词和副词比较级和最高级.pptx

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1、形容词和副词的比较级和最高级大多数形容词和副词有三个等级:原级,比较级,最高级。1.构成：比较级和最高级的规则变化和不规则变化规则变化：单音节词和部分双音节词 1 一般在词尾加er或est 2 以不发音的e结尾的词加r或st(nice,late)3 以重读闭音节结尾的，先双最后一个字母再加 er 或est.（big,fat,hot,thin,wet,red)4 以辅音字母+y结尾的，变y为i加 er或est (easy,funny,early)5 部分双音节词和多音节词：在词前加more或most。（beautiful,interesting,outgoing,comfortable等）第1页

2、/共13页写出下列词的比较级和最高级。(规则变化)1.tall short fast clever hard2.nice large fine late3.thin fat big hot wet4.busy heavy early happy friendly一般在词尾加-er -est以不发音的e结尾在词，加-r-st重读闭音节结尾,末尾只有1个辅音字母应双写最后一个字母再加-er-est以辅音字母加y结尾，变y为i加-er-est5.slowly useful delicious outgoing popular在部分多音节和双音节词前加more或most第2页/共13页不规则变化：1

3、多词共用：good/well-better-best bad/badly/ill-worse-worst many/much-more-most2一词两种：far farther-farthest further-furthest oldolder-oldest elder-eldest3 一对一 ：little-less-least第3页/共13页使用比较级时比较级句型：(1)A+be/实义动词+比较级+than+B Im taller than you.He gets up earlier than his sister.注意：(2)Which/Who+be动词/实义动词+比较级,AorB

4、?Which is bigger,this one or that one?Who draws more carefully,Tom or Jim?句中标志性词：than(3)the+比较级,the+比较级,表示越-就越-The busier I am,the happier I am .The more,the better .第4页/共13页 (4)比较级+and+比较级，more and more+原级.表示越来越-fatter and fatter harder and harder more and more beautiful The weather is becoming hot

5、ter and hotter.（5）用the+比较级+of the two来表达两者之间较-的一个。He is the better of the two.（6）用“比较级+than any other+单数名词来表达最高级 的意思.He is taller than any other student in the school。I注：在形容词比较级前可用much,a lot,a little,a bit,still,even,far 来修饰，表示程度。This park is a little larger than that one.第5页/共13页使用最高级时 句中标志性词：of或in

6、 短语 最高级句型：I注意：(1)“one of+the+形容词最高级+名词复数表示“最 中之一。One of the most beautiful cities is Shanghai.（2）which/who is the+形容词的最高级A,B or C?Who is the tallest in the class,Tom,Bill,or Mike?Which is the heaviest,a dog,a horse or an elephant?(3)Which/Who+动词+副词最高级,A，B or C?Who jumps highest,Mike,John or Hill?第6页

7、/共13页(4)the+序数词+形容词最高级(表示第几最)Lily is the third tallest girl in her class.注：形容词最高级前必须加定冠词the,副词可以 省略。原级：不与任何人或物比较用:注意：1 1、as+as+原级原级+as+as 2 2、not+so/as+not+so/as+原级原级+as+as=less+=less+原级原级 注：as-as句型不能与than 句型混用第7页/共13页习题精选：一.用括号内所给词的适当形式填空1 My uncle is as _(tall)as my father.2 The earth is getting _

8、 and_(warm).3 Which one is_(popular),MP3 or MP4?4 Shanghai is one of _ (beautiful)cities in China.5 Bob studies _(hard)than before.6 This book is much _ (interesting)than that one.7 Li lei jumps_(far)in our class.8 Which do you like _(good),tea or coffee?tallwarmerwarmermore popularthe most beautifu

9、lhardermore interestingfarthestbetter第8页/共13页/.二 单选：1.Beijing,the capital of China,is one of _ cities in the world.A.the biggest B.bigger C.much bigger D.big2.The math problem is_that one.A.not so easy as B.more easy than C.as easier than D.easy than 3.This year our school is_that it was last year.A

10、.much more beautiful B.much more beautiful C.the most beautiful D.beautifulAAB第9页/共13页4.John is much shorter than his sister,but he jumps_she does.A.as good as B.as best as C.as high as5.Which do you like _,Chinese or art?A.good B.best C.better 6.-This bag is quite heavy!-You are right,but that one

11、is_.A.more heavier B.much nore heavier C.much heavier7.In the exam,the more careful you are,_mistakes you will make.A.the fewer B.the fewest C.the less CCCA第10页/共13页句型转换1.Li Lei gets up earlier than the other two boys.Li Lei gets up _ _ the three boys.earliest ofHOMEWORKHOMEWORK2.When Mary got to school,Jack had already been there.Jack went to school _ _ Mary.earlierthan3.Wang Fan doesnt run so fast as Li Tong.Wang Fan runs _ _ than Li Tong.Li Tong runs _ than Wang Fan.moreslowlyfaster第11页/共13页第12页/共13页感谢您的观看！第13页/共13页