.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+as
2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
Ourclassroomisbrighterthanyours.
HedidmorecarefullyintheexamthanI.
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：这幅画比不上那幅画漂亮
2.比较级的修饰语。这些修饰语通常为副词或短语，置于比较级前面，说明比较级的程度。这些词有：alittle,little,abit,bit,alot,agreatdeal,much,far,rather,slightly,byfar,even,still,nearly,almost,any,just,(…)times等。
Themoonismuchsmallerthantheearth.
Theresultoftheexperimentturnedouttobeevenbetterthanexpected.
Speakabitmoreslowly,please.
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.
Themorecarefulyouare,thebetteryouwilldointheexam.
Theharderyoustudy,thegreaterprogressyou’llmake.
4)倍数的表达法
①倍数（half,once,twice,…times+as+形容词+as
②倍数+形容词比较级+than…
③倍数+the(size,height,length,weight,width,depth,age)+of…
Thewhiteboxisfourtimesdeeperthantheblackbox.
Thisroadistwicelongerthanthatone.
Theredbuildingistwicetheheightofthegreybuilding.
Ourschoolisthreetimesthesizeofyours.
Thestreetisfourtimesthelengthofthatone.
Theoutputofthepapermillisthreetimeshigherthanitwaslastyea
5)否定词not与never与比较级连用相当于最高级
(1)Youcan’tdoitbetter.=Youdoitthebest.
(2)Theteachercan’texplainthegrammarmoreclearly.
=Theteacherexplainsthegrammarthemostclearly.
(3)__Whatdoyouthinkofthefilm
__Wonderful.I’veneverseenabetterone.=ThisisthebestfilmthatI’veseen.
(4)YousingverywellandI’veneverheardamorebeautifulvoice=----
(5)Howwonderfullyshesings!I’veneverheardabettervoice.=---
II.形容词和副词比较等级练习
I.Choosethebestanswer
1.------Whatdidyoulikethefilm
-------It’swonderful.-I’veneverseen_______.
A.abetterB.aworseC.thebestD.theworst
2.Thenumberofpeoplepresentattheconcertwas_______thanexpected.Thereweremanyticketsleft.
A.muchsmallerB.muchmoreC.muchlargerD.manymore
3.ItisreportedthattheUnitedStatesuses___energyasthewholeofEurope.
A.astwiceB.twicemuchC.twicemuchasD.twiceasmuch
4.Thehouserentisexpensive.I’vegotabouthalfthespaceIhadathomeandI’mpaying_____here.
A.asthreetimesmuchB.asmuchthreetimes
C.muchasthreetimesD.threetimesasmuch
5.Ourneighborshas__________ours.
A.asabighouseasB.asbigahouseas
C.thesamebighouseasD.ahousethesamebigas
6.Themoreyouread,_________.
A.themoreyoulearnB.themoreyou’lllearn
C.moreandmoreyouyou’u’lllearnthemore
III.spend,cost,take,pay和payfor
（1） spend
.他花了很多钱买了这辆新车。
他平时把尽可能多的时间花费在读书上。
（2） cost：
.这本书用了他一美元。
.乘船到伦敦要用12英磅
（3） take
.到邮局用去了我十分钟时间。
他们用了两年时间拍这部新影片。
（4） pay
他花了很多钱买了这辆新车.
.这本书用了他一美元。
（5） payfor
.你得付你的饭费.
IV.notuntil
1.NotuntilIbegantowork_____howmuchtimeIhadwasted.
    A.didn’tIrealize    B.didIrealize        C.Ididn’trealize    D.Irealize
2.Notuntilallthefishdiedintheriver_____howseriousthepollutionwas.
    A.didthevillagersrealize            B.thevillagersrealized
    C.thevillagersdidrealized            D.didn’tthevillagersrealize
3.NotuntilIbegantowork____howmuchtimeIhadwasted.
A.didn'tIrealizeB.didIrealize
C.Ididn'trealizeD.Irealized
4.Notuntilhearrivedhome_____hefindthatthiswallethadbeenstolen.
A.didB.wouldC.whenD.that
5.Notuntilhisfatherwasoutofprison____toschool.
A.canJohngo        uldJohngo    D.Johncouldgo
6.Notuntilallthefishdiedintheriver_____howseriousthepollutionwas.
A.didthevillagersrealize            B.thevillagersrealized
C.thevillagersdidrealized            D.didn’tthevillagersrealize
7.Itwasabout600yearsago______thefirstclockwithafaceandanhourhandwasmade.(97全国卷)
A.that    B.until        C.before    D.when
8.Itwas___backhomeaftertheexperiment.(04湖北卷)
A.notuntilmidnightdidhego    B.untilmidnightthathedidn’tgo
C.notuntilmidnightthathewent    D.untilmidnightwhenhedidn’tgo
9.Itwasn’tuntilnearlyamonthlater_____Ireceivedthemanager’sreply.(05全国卷I)weight的最高级
A.since    B.when    C.as    D.that
10.Itwasnotuntilshegothome_______Jenniferrealizedshehadlostherkeys.(06全国卷II)
A.when    B.that    C.where    D.before
V+edform
ed分词既可以作前置定语,也可以作后置定语。
.1单个的过去分词作前置定语。
.1）及物动词的过去分词具有被动和完成意义。如:
Isawabrokencuponthetable.
Hetookcareofawoundedsoldier.
HisspokenEnglishispoor.
2）.不及物动词的ed形式不表被动只表完成。
Sheisagrownwoman.
Thepolicearerunningafteranescapedprisoner
Inautumnfallenleavescanbeseenontheground.
Theylookedupattherisensun.

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