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1、一.形容词和副词比较等级的用法I）同级比较：1甲与乙相比程度相同：用as+原级形容词/副词+as2甲与乙相比，甲不及乙：用notas/so+形容词/副词as。如：Dickisastallashisbrother.TomspeaksChineseasfrequentlyasJack.Thepictureis(not)asbeautifulasthatone.II）比较级：1.表示A超过B。此时用形容词和副词的比较等级more(adj/adv+er)+than如：Ourclassroomisbrighterthanyours.Hedidmorecarefullyintheexamth
2、anI.Idon’tthinkmathismoreimportantthanphysics..2表示A不及B用句型：less+形容词/副词的原级+than=notas/so+形容词/副词as=notmore---than---如：Rabbitsrunlessfastthandogs.=Rabbitsdon’trunas/sofastasdogs.Jennyislesscleverthanhersister.=Jennyisnotsolcleverashersister.Itrainslessoftenhereinautumnthaninspring.=Itdoesn’trains
3、ooftenhereinautumnasinspring这幅画比不上那幅画漂亮3．形容词和副词比较级的特殊用法1）moreandmore越来越……如：Youaregrowingtallerandtaller.Englishisbecomingmoreandmoreimportant.2).Themore--------,themore-----------.越……，越……Theharderheworks,thehappierhewillfeel.=Ifheworksharder,hewillfeelhappier.Themorecarefulyouare,thebetteryou
4、willdointheexam.=Ifyouaremorecareful,youwilldobetterintheexamThemoreyoupractice,themorefluentlyyouwillspeakEnglish.=Ifyoupracticemore,youwillspeakEnglishmorefluently.Theharderyoustudy,thegreaterprogressyou’llmake.=Ifyoustudyharder,you’llmakegreaterprogress.3)表示两者之中比较……的一个，用themore+of+thetwo(n
5、s)=Ofthetwo,------isthemore.Jackisthetallerofthetwobrothers.Thisisthebiggerofthetworooms.Ofthetwostudents,Tomisthemoreintelligent.Ofthetwogirls,Maryisthetaller.=MaryisthetallerOfthetwogirls.4)倍数的表达法①倍数（half,once,twice,…times+as+形容词+as②倍数+形容词比较级+than…③倍数+the(size,height,length,weight,width,dep
6、th,age)+of…Thewhiteboxisfourtimesdeeperthantheblackbox.Thisroadistwicelongerthanthatone.Theredbuildingistwicetheheightofthegreybuilding.Ourschoolisthreetimesthesizeofyours.Thestreetisfourtimesthelengthofthatone.5)同一范围相比加else或other相当于最高级。Tomistallerthananygirlinhisclass.Tomisthetallestboyinhis
7、class.=Tomistallerthananyotherboyinhisclass.=Tomistallerthanalloftheotherboysinhisclass.Tomistallerthananyotherstudentinhisclass.=Tomistallerthanalloftheotherstudentsinhisclass.=Tomistallerthananyoneelseinhisclass.Limingstudiesharderthananyon
