人教新目标八下unit7全单元课件.ppt

1、大多数形容词有三个级。大多数形容词有三个级。1.原级原级:Structure:as.as.像像.一样一样e.g.TimisastallasTom.2.比较级比较级(用于两者之间的比较用于两者之间的比较):Structure：形容词比较级形容词比较级than.e.g.Thisboxisbiggerthanthatone.3.最高级最高级(用于三者或三者以上的比较用于三者或三者以上的比较):Structure:the+形容词的最高级形容词的最高级of/in.e.g.Tomistheheaviestinourclass.Heisthemostpopularinourschool.规则变化规则变化1)

2、一般情况下，一般情况下，单音节或双音节的形容单音节或双音节的形容词词/副词比较级副词比较级er，最高级最高级est。如。如:clevercleverercleverestfewfewerfewestsmallsmallersmallest等。等。2)以以e结尾的词结尾的词，比较级比较级r，最高级最高级st即可。即可。如：如：nicenicernicestcutecutercutestlargelargerlargest3)以以辅音字母辅音字母y结尾的结尾的变变y为为ier或或est如如:easyeasiereasiesthappyhappierhappiest再如：再如：early,busy,

3、heavy,dirty,lazy也如也如此。此。4)重读闭音节，单辅音结尾的，重读闭音节，单辅音结尾的，双写这双写这个辅音字母个辅音字母er或或est的词：的词：fatfatterfattestthinthinnerthinnesthothotterhottestredredderreddestwetwetterwettestbigbiggerbiggest5)多音节和部分双音节的词多音节和部分双音节的词需要在形容词需要在形容词原级前原级前more构成构成比较级比较级，themost构构成成最高级最高级。如：。如：beautifulmorebeautifulthemostbeautiful又如

4、又如:delicious,popular,important,interesting,expensive,creative双音节双音节的词如的词如:carefulmorecarefulthemostcarefulusefulmoreusefulthemostuseful少数单音节词少数单音节词也是这样，如：也是这样，如：pleasedmorepleasedthemostpleasedtiredmoretiredthemosttiredb)不规则变化：不规则变化：goodbetterbestwellbetterbestbadworseworstmany/muchmoremostfarfarthe

5、rfarthest(距离远距离远)farfurtherfurthest(程度深程度深)oldeldereldest(长幼长幼)oldolderoldest(年龄年龄)1.三者或三者以上相比，表示最高程度三者或三者以上相比，表示最高程度时，用时，用“the+最高级最高级”的结构表示。的结构表示。这种句式一般常有表示比较范围的这种句式一般常有表示比较范围的介介词短语词短语。例如：。例如：2.ZhangHuaisthetallestofthethree.3.Heworks(the)hardestinhisclass.1.比较级考点比较级考点2.比较级修饰问题比较级修饰问题alittle,abit,e

6、ven,still,much,alot,far等可修饰比较级。等可修饰比较级。3.e.g.TomisalittletallerthanJim.Thisbookismuchmoreinterestingthanthatone.同级比较同级比较e.g.TheweatherinBeijingiscolderthanthatinXian.Ourschoolisbiggerthanyours.the+比较级比较级e.g.Lucyisthefatterofthetwogirls.“a/an+比较级比较级”表示表示“又一，再又一，再一一”e.g.Lilyhasadoll,butshewantsabigger

7、one.隐性比较（没有隐性比较（没有than的情况）的情况）e.g.Whorunsfaster,LucyorLily?Youdbettercomeearliernexttime.Heworkedhardlastterm,butheworksevenharderthisterm.越来越越来越.a.比较级比较级+and+比较级比较级b.b.the+比较级比较级+句子，句子，the+比较级比较级+句子句子c.e.g.Itsgettingcolderandcolder.Themoreyouexercise,thebetteryouare.2.最高级考点最高级考点说明：形容词的最高级前必须加说明：形容词

8、的最高级前必须加the；副；副词的最高级前省略词的最高级前省略the。范围问题范围问题e.g.Tomisthetalleststudentintheclass.Springisthebestseasonoftheyear.“.之一之一”问题问题e.g.Beijingisoneofthebiggestcitiesintheworld.“the+序数词序数词+最高级最高级”e.g.Ithinkheisthesecondtallestboyinhisclass.3.比较级和最高级的转换比较级和最高级的转换e.g.Tomisthetalleststudentintheclass.=Tomistalle

9、rthananyotherstudentintheclass.=Tomistallerthanalltheotherstudentsintheclass.=NootherstudentsaretallerthanTom.同级比较同级比较as+adj./adv.+ase.g.SheisasthinasLily.HewritesascarefullyasLinda.not+as/so+adj./adv.+ase.g.TonydidntrunsofastasCarter.1.Ourfamilyhasboughtacarsowecantravel_thanbefore.（2008陕西）陕西）A.mos

10、teasilyB.lesseasilyB.C.easilyD.moreeasilyC.2.Myfathertoldmeastorylastnight.Itis_oneIveeverheard.（2009陕西）陕西）D.thefunniestB.funniestE.C.funnierD.thefunnierDA3.The_friendsyouhave,the_youwillbe.（2010陕西）陕西）A.more,happyB.many,happyC.more,happierD.many,happier4.Whenheheardacryforhelp,heranoutas_ashecould.（

11、2011陕西）陕西）A.hardlyB.quicklyB.C.finallyD.slowlyCB5.ThisplaceisnotbigenoughforLucysbirthdayparty.Weshouldfinda_one.（2012陕西）陕西）A.bigB.smallB.C.biggerD.smallerCsquaren.平方平方metern.米米deepadj.深的深的desertn.沙漠沙漠populationn.人口人口Asian.亚洲亚洲tourv.n.旅行旅行touristn.旅行者旅行者walln.墙墙amazingadj.令人大为惊奇的令人大为惊奇的ancientadj.古代

12、的古代的wideadj.宽的；宽阔和宽的；宽阔和Do you know these interest places?QomolangmaQomolangmarunsalongtheborder(边境边境)betweenChinaandNepal.Itiscoveredwithsnowalltheyearround.Its8844.43high,thehighestintheworld.Its26kilometerslong.TheNileisthelongestriverintheworld.Itsmorethan6600kilometerslong.Itrunsthrough9countri

13、es,itsoneofthelargestriverflows（流）（流）throughtheinternationalstatesintheworld.TheNileThe Caspian SeaTheCaspianSeaisthebiggestlakeintheworld.ItliesintheborderbetweenAsiaandEurope.TheSaharaisthebiggestdesertintheworld.Itislocated（位于）（位于）inthenorthernAfrica.The SaharaTheYangtzeRiveristhethirdlongestrive

14、rintheworld,thefirstAsianrivers.Its6211.31kilometerslong.ItrunsintotheEastSeainShanghaifinally.TheYangtzeRiverWhich is the highest mountain in the world?Which is the longest river in Asia?.1a Match the facts you know.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea

15、6,671kilometerslongTheNile8,844.43metershighPracticeinpairslikethis:A:Whichistheinthe?B:8,844metershigh.8,844米高米高metershigh(long,wide)米高（长，宽米高（长，宽)。英语表示英语表示“有多长（宽，高有多长（宽，高）”时，时，一般一般将数词和数量单位放在表示长宽高的将数词和数量单位放在表示长宽高的形容词前作状语形容词前作状语。e.g.Thewallis1.7metreswide.A:HowhighisQomolangma?B:Its8,844metershigh.Th

16、ebiggestdesertintheworldisabout8,000,000squarekilometersinsize.HowbigistheSahara?Itsabout8,000,000squarekilometersinsize.1b Listen and complete the sentences.1.Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertintheworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.higherthebiggestthedeepestthelongest2a Listen and number the facts(1-4)in the order you hear them.6,3005,0005,464300_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthe