【文档说明】Unit3 形容词副词比较级和最高级课件 2022-2023学年人教版英语八年级上册.pptx,共(15)页,355.773 KB,由envi的店铺上传
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形容词、副词的原级、比较级和最高级1、分类:形容词和副词有原级、比较级和最高级三级。原级变为比较级和最高级有规则变化和不规则变化两种。2、规则变化:(1)单音节和部分双音节形容词和副词,在原级的后面加上er,est构成比较级和最高级。a)直接加er,est:c
lean-cleaner-cleanestb)以重读闭音节结尾的,要双写最后一个辅音字母,后加er,est:big-bigger-biggestc)以辅音字母+y结尾的,先把y改为i再加上er,est:tidy-ti
dier-tidiest(2)两个音节或两个以上的音节的,在原级前加more/most.beautiful-morebeautiful-mostbeautiful3、不规则变化:原级比较级最高级good好的better更好的best最好的we
ll好;(身体)好的,bad,badly糟糕的,糟糕地worse更糟糕的,更糟糕地;(身体)更不舒服的worst最糟糕的,最糟糕地;(身体)最不舒服的ill(身体)不舒服的many许多的(可数)more更多的;更most最多的;最much许多的(不可数);非常little少
的less更少的least最少的far远的;远地farther更远的;更远地farthest最远的;最远地further进一步的(地)furthest最深刻的(地)4、基本句型☆表示两者之间一样。。。时,使用句型:A+谓语动词+as+形容词/副词原级+as+BHeisasta
llashisyoungersister.他和他妹妹一样高。Herunsasfastashissister。他和他妹妹跑得一样快。☆表示A不如B时,A+谓语动词(否定式)+as/so+形容词/副词原级+as+B.He
isnotso/astallashisyoungersister.他没他妹妹高。Hedoesn'tworkashardashisyoungersister.他没有他妹妹努力。☆表示A比B。。。时,A+谓语动词形容词/副词比较级
+than+BI'mmoreoutgoingthanmysister.我比我妹妹更外向。Heplaystennisbetterthanhissister.4、基本句型☆表示两者之间一样。。。时,使用句型:A+谓语动词+as+形容词/副词原级+as+BHeisastal
lashisyoungersister.他和他妹妹一样高。Herunsasfastashissister。他和他妹妹跑得一样快。4、基本句型☆表示A不如B时,A+谓语动词(否定式)+as/so+形容词/副词原级+as+B.Heisnotso/astalla
shisyoungersister.他没他妹妹高。Hedoesn'tworkashardashisyoungersister.他没有他妹妹努力。4、基本句型☆表示A比B。。。时,A+谓语动词形容词/副词比较级+than+BI'mmoreou
tgoingthanmysister.我比我妹妹更外向。Heplaystennisbetterthanhissister.比较级特殊结构:1、“比较级+and+比较级”表示“越来越……”。如:Thewea
therisgettingwarmerandwarmer.(天越来越温暖了)2、“the+比较级…,the+比较级…”表示“越…就越…”。如:Themoretreesweplant,thebetteritwillbe.(我们栽的树越多,情况就
会越好)/Theharderyoutry,thegreateryourprogressis.(你越是努力,进步就越大)比较级特殊结构:1、“比较级+and+比较级”表示“越来越……”。如:Theweatherisgettingwarmerandwarmer.(天
越来越温暖了)2、“the+比较级…,the+比较级…”表示“越…就越…”。如:Themoretreesweplant,thebetteritwillbe.(我们栽的树越多,情况就会越好)/Theharderyoutry,thegreat
eryourprogressis.(你越是努力,进步就越大)最高级的句型是:主语(sb./sth)+谓语动词+(the)+形容词/副词最高级+in/of….如:TownCinemaisthequietestofallthecinemasintown.Heju
mped(the)highestofthethree(boys).(三个男生中他跳得最高)最高级的特殊结构:1.oneofthe+最高级+名词(复数)”整个短语为单数含义,谓语要用单数形式。如:TheelephantisoneofthemostimportantsymbolsinThail
and.大象是泰国最重要的象征之一。2、“Which/Who+动词+形/副,A,BorC?”句型中,如果有两个选项,形/副用比较级,如果有三个选项,形/副用最高级。如:Whohasmorefriends,youoryoursis
ter?Whichistheheaviest,apig,ahorseoranelephant?(猪、马、象哪个最重?)用所给词的适当形式填空1.Dianawasalittlefatinthepast.Butno
wsheismuch_______(瘦的)thanbefore.2.Mymotheristhe________(busy)inmyfamily.Shealwayshasmuchtodoeveryday.3.D
umplingHouseis___________(cheap)restaurantinthecity.4.Whodoyouthinklistens___________(careful),Jack,MikeorMark?5.Doyo
uthinkIamas________(serious)asmyfather.thinnerbusiestthecheapestmostcarefullyserious1.Thereare_________sharingbikesinm
anycities.Sotherewillbe________pollution.A.lessandless;moreandmoreB.lessandless;fewerandfewerC.morean
dmore;lessandlessD.fewerandfewer;lessandless2.Beijingisoneofthe________intheworldtoday.A.busiestcityB.busiestcitiesC.b
usycityD.busycities3.Thegovernmentsaysthattheyaregoingtobuildthethird__________roadinthetown.A.wideB.
widerC.widestD.thewidestCBC4.—Howhardyouareworking,Helen!—Wemust!PresidentXisaidthat_______weare,_______wewillbe.A.themorehard
-working:theluckierB.thehard-working;theluckyC.morehard-working;luckierD.themosthard-working;theluckie
st5.Mysisterisalittle_________thanmycousin.A.heavyB.moreheavyC.heavierD.theheaviestAC