六年级比拟级与第一流的用法

课前准备：检查学生掌握单词情况（听写）一、形容词、副词的比较级和最高级的构成规则.一般单音节词和少数以-er,-ow结尾的双音节词，比较级在后面加-er,最高级在后面加-est；（1）单音节词如：sm∏fsm∏er→sm∏estshort→shorter→shortesttll→tller→tllestgret→greter→gretest（2）双音节词如：clever→cleverer→cleverestnrrow→nrrower→nrrowest.以不发音e结尾的单音节词，比较在原级后加-r,最高级在原级后加-st；如：lrgeflrger→lrgestnice→nicer→nicestblefblerfblest3．在重读闭音节（即：辅音＋元音＋辅音）中,先双写末尾的辅音字母,比较级加-er,最高级加-est；如：bigfbigger→biggesthot→hotter→hottestt→tter→ttest.以“辅音字母+y”结尾的双音节词，把y改为i,比较级加-er,最高级力口-est；如：esyfesier→esiesthevy→hevier→heviestbusy→busier→busiesthppy→hppier→hppiest.其他双音节词和多音节词，比较级在前面加more,最高级在前面加most；如：beutiul→morebeutiul→mostbeutiuldierent→moredierent→mostdierentesily→moreesily→mostesily注意：（1）形容词最高级前通常必须用定冠词the,副词最高级前可不用。例句：TheShristhebiggestdesertintheworld.（2）形容词most前面没有the,不表示最高级的含义，只表示〃非常〃。Itismostimportntproblem.=Itisveryimportntproblem.6．有少数形容词、副词的比较级和最高级是不规则的,必须熟记。如：goodfbetter→bestwell→better→bestbd→worse→worstill→worse→worstoldfolder∕elder→oldest∕eldestmny∕muchfmorefmostlittlefless→lestr→urther∕rther→Urthest∕rthest词形变换。比较级 最高级lrge st esy wet good importnt well bd mny little r strong ptient se expensive 二、形容词、副词的比较级和最高级的句子公式：比较级形容词物体+m/re/is+形比+thn+物体B.Imtllerthnyou.Pstismoredeliciousthnpizz.副词物体+行为动词+副比+thn+物体B.Cheethsrunsterthngots.Hestudiesbetterthnme.最高级1）物体+m/re/is+the+形最高级+比较范围（o+人/物，in+地方）.Imthetllestintheclss.Pstisthemostdeliciousoodothethree.2）物体+行为动词+副词最高级+比较范围（o+人/物，in+地方）.Cheethsrunstestintheworld.Hestudiesbestous.Sheis thn ..busier/usB.busier/weC.morebusy/usD.morebusy/weJneis thnBetty..lesstllerB.lesstllestC.lesstllD.notstllChinis countryintheworld..thethirdlrgestB.thelrgestthirdC.thethirdlrgeD.thirdlrgest-Whichis sesoninBeijing?-Ithinkit'sutumn..goodB.betterC.bestD.thebest5．-Whichis ,thesun,themoonortheerth?--Ocourse,themoonis..smllB.smllerC.smllestD.thesmllest.TheirinBeijingisgettingmuch nowthnewyersgo..clenB.clenerC.clenestD.theclenest.Mobilephonesreverypopulrnowndtheyre thnbeore..chepB.cheperC.chepestD.thechepest8．IstudyEnglishs smybrother..hrdB.hrderC.hrdestWhichis ,bicycleorcomputer?.expensiveB.moreexpensiveC.themostexpensiveTheYellowRiverisoneo riversinChin.longBlongerCthelongestSheisthesecond studentinourclss..tllB.tllerC.tllest用括号里的词的适当形式填空。Tomcnjump (high).Hejumps (high)thntheotherboysinhisclss.Jnetsing (well)inherclss.Shecnsing (well)thnhermusictecher,too.Mytheris (hndsome).Butmybrotheris (hndsome)thnhim.Heis (hndsome)inmymily.Ihve (mny)booksinmyclss.Butmytecherhs (mny)booksthn (I).(they)houseismuch (old)thn (we).三、形容词和副词比较级的用法.“+be+形容词比较级+thn+B”意思为“比B更……”。如：Thistreeistllerthnthtone.这棵树比那棵树高。注意：①在含有连词thn的比较级中，前后的比较对象必须是同一范畴，即同类事物之间的比较。②在比较级前面使用much,表示程度程度“强得多”。如：wtermelonismuchbiggerthnnpple.③very,quite一般只能修饰原级，不能修饰比较级。.“比较级+nd+比较级”或“morendmore+原级”表示“越来越……”如：ItbecomesWrmerndWrmerwhenspringcomes.春天来了，天气变得越来越暖和了。Itisgettingcoolerndcooler.天气越来越凉爽。TheWindbecmemorendmorehevily.风变得越来越大。Ourschoolisbecomingmorendmorebeutiul.我们的学校变得越来越美丽。.在含有or的选择疑问句中，如果有两者供选择，前面的形容词要用比较级形式。如：Whoistller,TimorTom?谁更高，Tim还是Tom?.“the+比较级……，the+比较级”，表示“越……越……”。Themoremoneyyoumke,themoreyouspend.钱你赚得越多，花得越多。Thesooner，thebetter.越快越好。.表示倍数的比较级用法：.is…timesthesize/height/length/widthoB.如：TheneWbuildingisthreetimestheheightotheoldone.这座新楼比那座旧楼高三倍。(新楼是旧楼的四倍高).is…timessbig/high/long/wide/lrgesB.如：siisourtimesSlrgeSEurope.亚洲是欧洲的四倍大。（亚洲比欧洲大三倍）.is…timeslrger/higher/longer/widerthnB.如：OUrschoolistwicebiggerthnyours.我们学校比你们学校大两倍。6.形容词、副词的最高级形式主要用来表示三者或三者以上人或事物的比较，表示“最 ”的意思。句子中有表示范围的词或短语。如：othethree,inourclss等等。如：Heisthetllestinourclss.他在我们班里是最高的。."否定词语+比较级"，"否定词语+So…s"结构表示最高级含义。Nothingissoesysthis.=Nothingisesierthnthis.=Thisistheesiestthing..比较级与最高级的转换：Mikeisthemostintelligentinhisclss.Mikeismoreintelligentthnnyotherstudentinhisclss注意：修饰比较级和最高级的词1）可修饰比较级的词.bit,little,rther,much,r,byr,mny,lot,lots,gretdel,ny,still,even等。.还可以用表示倍数的词或度量名词作修饰语。.以上词（除byr）外，必须置于比较级形容词或副词的前面。注意：使用最高级要注意将主语包括在比较范围内。（错）Tomisthetllestohisthreebrothers.（对）Tomisthetllestothethreebrothers.2）下列词可修饰最高级：byr,r,much,mostly,lmost。Thishtisnerly/lmostthebiggest.注意：.very可修饰最高级，但位置与much不同。Thisistheverybest.Thisismuchthebest.b.序数词通常只修饰最高级。ricisthesecondlrgestcontinent.选择题Thisboxis___thtone..hevythnB.sohevythnC.heviersD.shevysWhenwespektopeople,weshouldbe'..spolitespossibleB.spolitespossiblyC.spolitelyspossibleD.spolitelyspossiblyThisbookis thtone,but thnthtone..sdiicults;expensivesmorediicults;moreexpensivesdiicults;moreexpensivemorediicults;sexpensiveIthinkthestoryisnotso___sthtone..interestingB.interestedC.moreinterestingD.mostinterestingHistherbegntowork hewssevenyersold..soldsB.serlysC.sinceD.whilethinkscienceis_thnJpnese..muchimportnt B.importntC.muchmoreimportntD.moremuchimportnt.Thispencilis___thnthtone..longestB.longC.longerD.slong.Mymotherisno___young..shorterB.longerC.littleD.ew.Thesechildrenre thisyerthntheywerelstyer..moretllB.moretllerC.verytllerD.muchtller10.Itwsveryhotyesterdy,butitis___tody..evenhotterB.morehotterC.muchmorehotD.muchhot四、总结与作业.选择填空。1.Birdscnly ,eglescnly thnbirds.Th