《高中英语比较级》PPT课件 31页

一.形容词和副词比较等级的用法\n1）原级比较：表示两者程度相同。用句型as+形容词/副词+as表示，否定名式为：notas/so+形容词/副词as。如：Dickisastallashisbrother.Tomspeaksasquicklyashiscousin.Ihaveneverseenapersonas/socleverasheis.\n2）比较级：A.表示A超过B。此时使用形容词和副词的比较等级。如：Ourclassroomisbrighterthanyours.Dogsrunfasterthanrabbits.Idon’tthinkmathismoreimportantthanphysics.\nB.表示A不如B。用句型：less+形容词/副词的原级表示。如：Rabbitsranlessfastthandogs.Jennyislesscleverthanhersister.Itrainslessoftenhereinautumnthaninspring.\n3）形容词和副词比较级的特殊用法A.越来越……如：Youaregrowingtallerandtaller.你越长越高了。Englishisbecomingmoreandmoreimportant.英语越来越重要了。\nB.越……，越……如：Theharderyoupush,themorequicklythatcartwillmove.你越使劲推，车就越跑的快。Themorecarefulyouare,thebetteryouwilldointheexam.你越小心，就会考得越好。Themoreyoupractice,themorefluentlyyouwillspeak.你练得越多，讲得就越流利。\nC.表示两者之中比较……的一个，用of引导，比较级前加上the。如：Jackisthetallerofthetwobrothers.杰克是兄弟两中较高的一个。Thisisthebiggerofthetworooms.这个房间是两个中较大的一个。\nD.nomorethan表示“只；不超过；不多于”，相当于only。如：Hiswholeschooladdeduptonomorethanoneyear.他所接受的学校教育不过一年。Shehasnomorethanoneyuaninherpocket.她兜里只有一块钱。\nE.nomore…than表示“……一样不……”；而notmore…than则表示“不像……那样”，相当于“notso…as”。如：Hsisfeelingnobetterthanyesterday.他觉得不比昨天好多少。\nSheisnotmoregenerousthanheryoungersister.她不如她妹妹那样慷慨大方。Sheisnotsogenerousasheryoungersister.相当于：\nF.nolessthan表示“多达，……那样多;至少,起码”,相当于asmuch/manyas,蕴含这个数是大的；而notlessthan表示“不少于”,不强调这个数的大小,只说明数据本身。如：Ihavenolessthantendictionaries.我起码有10本字典。蕴含“我的词典多”\nIhavenotlessthantendictionaries.我具有的词典不少于10本。不含“我的词典多”的意思，只说明一个事实。G.noless…than表示“不比……差；与……同样地”，相当于“as…as”。如：Sheisnolessbeautifulthanhersister.\nH.不用比较级的形容词如：senior,junior,superior,inferior等。如：Heisthreeyearsseniortome.他比我大三岁。Yourknowledgeofelectronicsismuchsuperiortomine.你对电子学的知识远远超过我。\nI.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。如：\nThemoonismuchsmallerthantheearth.Theresultoftheexperimentturnedouttobeevenbetterthanexpected.Speakabitmoreslowly,please.Theoutputofthepapermillisthreetimeshigherthanitwaslastyear.\n二、英语中基数词、序数词、分数、小数和百分数的读法\n1.基数词的读法：A.先说“几十”，再说“几”，中间用连字符。如：23—89—B.先说“几百”，再加and,再加末两位数（或末位数）。如：223—416—809—twenty-threeeighty-ninetwohundredandtwenty-threefourhundredandsixteeneighthundredandnine\nC.1000以上的数先从后向前数，每三位数加一“,”（千分位）；第一个“,”号前为thousand;第二个“,”号前为million;第三个“,”号前为billion。如：1,001—4,000—9,743—174,301—750,000,000—onethousandandonefourthousandninethousand,sevenhundredandforty-threea(one)hundredandseventy-fourthousand,threehundredandonesevenhundredandfiftymillion\n2.序数词的读法序数词一般以与之相应的基数词加词尾-th构成，如：tenth（第十），但下面这些基数词在变序数词时，有特别的地方。如：A.one—two—three—five—eight—nine—twelve—firstsecondthirdfiftheighthninthtwelfth\nB.以-ty结尾的词，要先变-y为-i，再加-eth。如：twenty—forty—C.以one,two,three,five,nine收尾的多位数词，要照第一条方法变。如：twenty-one—twenty-two—thirty-five—ninety-nine—ahundredandfifty-three—twentiethfortiethtwenty-firsttwenty-secondthirty-fifthninety-ninthahundredandfifty-third\n基数词表示分子，序数词表示分母，除了分子是“1”的情况外，序数词要用复数。如：¼—2/3—7/9—5/12———one-fourthtwo-thirdsseven-ninthsfive-twelfthstwoandthree-fifthsthirtyandseven-eighths3.分数词的读法2353078\n一些特殊的表达法½—¼—¾—a/onehalfa/onequarterthreequarters4.小数的读法7.8—0.4—0.03—0.125—14.397—sevenpointeightzeropointfourzeropointzerothreezeropointonetwofivefourteenpointthreenineseven\n5.百分数的读法27%—45%—86%—twenty-sevenpercentforty-fivepercenteighty-sixpercent\nExercise\n1.Thatdoesn’tsoundveryfrightening,Paul.I’veseen_______.Whatdidyoulikemostaboutthefilm?A.betterB.worseC.bestD.worstI.Choosethebestanswer.\n2.Thenumberofpeoplepresentattheconcertwas_______thanexpected.Thereweremanyticketsleft.A.muchsmallerB.muchmoreC.muchlargerD.manymore\n3.HespeaksEnglishwellindeed,but,ofcourse,not_____anativespeaker.A.asfluentasB.morefluentthanC.sofluentlyasD.muchfluentlythan4.ItisreportedthattheUnitedStatesuses___energyasthewholeofEurope.A.astwiceB.twicemuchC.twicemuchasD.twiceasmuch\n5.Marykeptweighingherselftoseehowmuch_____shewasgetting.A.heavierB.heavyC.theheavierD.theheavier\n6.Thehouserentisexpensive.I’vegotabouthalfthespaceIhadathomeandI’mpaying_____here.A.asthreetimesmuchB.asmuchthreetimesC.muchasthreetimesD.threetimesasmuch\n7.Ourneighbourhas__________ours.A.asabighouseasB.asbigahouseasC.thesamebighouseasD.ahousethesamebigas\n8.AsfarasIamconcerned,educationisaboutlearningandthemoreyoulearn,_________.A.themoreforlifeareyouequippedB.themoreequippedforlifeyouareC.themorelifeyouareequippedforD.youareequippedthemorelife