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1、课前打算:检查学生驾驭单词状况(听写)一、形容词、副词的比较级和最高级的构成规则1 .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:sma1.1.-*Sma1.1.er-sma1.1.estshort-shorter-shortestta1.1.-ta1.1.er-ta1.1.estgreat-greater-greatest(2)双音节词如:c1.ever-c1.everer-c1.everestnarrow-narrower-narrowest2 .以不发音。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:
2、1.arge-*1.arger-1.argestnice-*nicer-nicestab1.e-ab1.er-*ab1.est3 .在垂读闭音节(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-es1.:如:big-*bigger-*biggesthot-hotter-*hottestfat-fa1.1.er-fattest4 .以“辅音字母+y”结尾的双音节词,把y改为i,比较级加-er,最高级加-es1.:如:easy-easier-easiestheavy-*hcavier-*hcaviestbusy-*busier-*busiesthappyhappierha
3、ppiest5 .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:1:beautifu1.-morebeautifu1.-*mostbeautifu1.different-moredifferent-mostdifferenteasi1.y-*moreeasi1.y-*mosteasi1y留意:(1)形容词最高级前通常必需用定冠词the,副词最高级前可不用。例句:TheSaharaisthebiggestdesertinthewor1.d.(2)形容词most前面没有the,不表示最高级的含义,只表示特别”。Itisamostimportantprob1.em.=Iti
4、saveryimportantprob1.em.6 .有少数形容词、副词的比较级和最高级是不规则的,必需熟记。如:good-better-bestwe1.1.-*better-bestbadworseworsti11-*worse-*worstO1.dfoIdere1.der-O1.deSt/e1.destmany/much-more-*most1.itt1.e-*1.ess-1.eastfar-furtherfarther-furthest/farthest词形变换。比较级最高级1.argefasteasywetgoodimporIanIwe1.1badmany1.itt1.efarstro
5、ngpatientsafeexpensive二、形容词、副词的比较徽和最高级的句子公式:比较级形容词物体A+am/are/is+形比+than+物体B.IamtaiIerthanyou.Pastaismorede1.iciousIhanpizza.副词物体A+行为动词+副比+than+物体B.Cheetahsrunfasterthangoa1.s.Hestudiesbetterthanme.最高级1)物体A+am/are/is+the+形最高级+比较范围(of+人/物,in+地方).Iamtheta1.1.estinthec1.ass.Pastaisthemostde1.iciousfoodo
6、fthethree.2)物体A+行为动词+副词最高级+比较范围(of+人/物,in+地方)Cheetahsrunfastestinthewor1.d.Hestudiesbestofus.1. Sheisthan.A.busier/usB.busier/weC.morebusy/usD.morebusy/we2. JaneisthanBetty.1.essta1.1.erB.1.essta1.1.estC.1.essta1.1.D.notasta1.1.3. Chinaiscountryinthewor1.d.thethird1.argestB.the1.argestthirdC.thethir
7、d1.argeD.athird1.argest4. -WhichisseasoninBeijing-Ithinkit,sautumn.goodB.betterC.bestD.thebest5. -Whichis,Ihesun,themoonortheearthOfcourse,themoonis.A.sma1.1.B.sma1.1.erC.sma1.1.estD.thesma1.1.est6. TheairinBeijingisgettingmuchnowthanafewyearsago.A.c1.eanB.c1.eanerC.c1.eanestD.thec1.eanest7. MobiIcp
8、honesareverypopu1.arnowandtheyarethanbefore.cheapB.cheaperC.cheapestD.thecheapest8. IstudyEng1.ishasasmybrother.A.hardB.harderC.hardest9. Whichis,abicyc1.eoracomputerA.expensiveB.moreexpensiveC.themostexpensiveriversinChina.10. TheYe1.1.owRiverisoneofA1.ongB1.ongerCthe1.ongest11.Sheisthesecondstuden
9、tinourc1.ass.A.ta1.1.B.taiIerC.tai1.est用括号里的词的适当形式填空。1. Tomcanjump(high).Hejumps(high)thantheotherboysinhisc1.ass.2. Janetsing(we1.1.)inherc1.ass.ShecanSing(we1.1.)thanhermusicteacher,too.3. Myfatheris(handsome).Butmybrotheris(handsome)thanhim.Heis(handsome)inmyfami1.y.4. Ihave(many)booksinmyc1.ass.
10、But11yteacherhas(many)booksthan(I).5. (they)houseismuch(o1.d)than(we).三、形容词和副词比较皴的用法1 .“A+be+形容词比较级+than+B”意思为“比B更如:ThistreeistaiIerthanthatone.这棵树比那棵树高。留意:在含有连词than的比较级中,前后的比较对象必需是同一范畴,即同类事物之间的比较。在比较级前面运用much,表示程度程度“强得多”。如:Awaterme1.onismuchbiggerthananapp1.e.Vecr,quite一般只能修饰原级,不能修饰比较级。2 .“比较级+and+
11、比较级”或“moreandmore+原级”表示“越来越”如:ItbecomeswarmerandWarmerwhenspringcomes.春天来了,天气变得越来越温煦了。Itisgettingcoo1.erandcoo1.er.天气越来越凉快。Thewindbecamemoreandmoreheavi1.y.风变得越来越大。Ourschoo1.isbecomingmoreandmorebeautifu1.我们的学校变得越来越美丽。3 .在含有Or的选择疑问句中,假如有两者供选择,前面的形容词耍用比较级形式。如:Whoistai1.er,TimorTom谁更高,Tim还是Tom4 .“the+
12、比较级,the+比较级”,表示“越越”。Themoremoneyyoumake,themoreyouspend.钱你赚得越多,花得越多。Thesooner,thebetter.越快越好。5 .表示倍数的比较级用法:.Aistimcsthesizehcight1.engthwidthofB.如:Thenewbui1.dingisthreetimestheheightoftheo1.done.这座新楼比那座旧楼高三倍。(新楼是旧楼的四倍高) .istimesasbighigh1.ongwide1.argeasB.1:Asiaisfourtimesas1.argeasEurope.亚洲是欧洲的四倍大
13、。(亚洲比欧洲大三倍) .istimes1.arger/higher/Iongcr/widcrthanB.如:Ourschoo1.istwicebiggerthanyours.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“域”的意思。句子中有表示范围的词或短语。如:Ofthethree,inourc1.ass等等。如:Heistheta1.1.estinourc1.ass.他在我们班里是最高的。7 .否定词语+比较级否定词语+so-as”结构表示最高级含义。Nothingissoeasyasthis.=Nothingiseasierth
14、anthis.=Thisistheeasiestthing.8 .比较级与最高级的转换:Mikeisthemostinte1.1igentinhisc1.ass.Mikeismoreinte1.Iigentthananyotherstudentinhisc1.ass留意:修饰比较级和最高级的词1)可修饰比较级的词Q.abit,a1.itt1.e,rather,much,far,byfar,many,a1.ot,1.ots,agreatdea1.,any,sti1.1.,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byfar)外,必需置F比较级形容词或副词的前面。留意:
15、运用最高级要留意将主语包括在比较范围内。(错)Tomistheta1.1.estofhisthreebrothers.(对)Tornistheta1.1.estofthethreebrothers.2)下列词可修饰最高级:byfar,far,much,most1.y,a1.mostoThishatisnear1.y/a1.mostthebiggest.留意:a.very可修饰最高级,但位St与much不同。Thisistheverybest.Thisismuchthebest.b.序数词通常只修饰最高级。Africaisthesecond1.argestcontinent.选择题1. Thisboxisthatone.A.heavythanB.soheavythanC.heavierasD.asheavyas2. Whenwespe