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形容词和副词的比较级和最高级8a-Unit6yxxoybigbigger◇Lookatthepicturesandunderstand看图并理解◇Lookatthepicturesandunderstand看图并理解bigbiggerbiggestfast◇Lookatthepicturesandunderstand看图并理解fastfaster◇Lookatthepicturesandunderstand看图并理解fastfasterfastest◇Lookatthepicturesandunderstand看图并理解构成方法原级比较级最高级单音节词和少数多音节词一般在词尾加-er/ə/或-est/ist/coldcoldercoldestfastfasterfastest以字母e结尾的形容词，加-r或-stnicenicernicestlargelargerlargest重读闭音节词只有一个辅音字母时，应先双写辅音字母；再加-es或-estbigbiggerbiggesthothotterhottest以“辅音字母+y”结尾的双音节词，先改“+y”结尾的双音节词，先改“y”为“i”,再加-er或-esteasyeasiereasiestearlyearlierearliest多音节词和部分双音节词在词前加more或mosttiredmoretiredmosttiredeasilymoreeasilymosteasily单音节和少数多音节的形容词和副词的比较级和最高级的构成分规则和不规则。变化如下：不规则变化，要多加注意哦！good→→bad→→many→→little→→well→→badly→→much→→far→→betterbestworseworstmoremostlessleastbetterbestfartherfarthestworseworstmoremostimportant_______________________________easy______________________________________wet_______________________________________happy____________________________________careful__________________________________thin___________________________________good____________________________________hot______________________________________easily____________________________________many____________________________________nice____________________________________big_____________________________________heavy__________________________________delicious________________________________much____________________________________给出下列词的比较级和最高级moreimportantmostimportanteasiereasiestwetterwettesthappierhappiestmorecarefulmostcarefulthinnerthinnestbetterbesthotterhottestmoreeasilymosteasilymoremostnicernicestbiggerbiggestheavierheaviestmoredeliciousmostdeliciousmoremostMoreexamples:1.Maryisclevererthanherlittlesister.2.Thenewbuildingishigherthantheoldone.3.Hisshirtismoreexpensivethanmine.4.KateismorebeautifulthanLilyis.5.SheisfiveyearsolderthanIam.6.Heis2centimeterstallerthanher.7.Thisruleris20centimeterslongerthanthatone.比较级的用法：…than…1.汤姆比杰克高.2.这只箱子要比那只箱子大.3.那些苹果比这些大.4.第一个问题很容易,但第二个更容易.TomistallerthanJack.Thisboxisbiggerthanthatone.Thoseapplesarebiggerthantheseones.Thefirstquestionisveryeasy,butthesecondoneiseasier.(2)数量的比较1.我的笔比你的多.2.我喝的茶比他多.3.他吃的饭比我少.4.一班的学生比二班多.Ihavemorepensthanyou(do).Idrinkmoreteathanhe(does).HehaslessricethanI(do).TherearemorestudentsinClass1thaninClass2.Moreexamples:1.Heistheyoungestofallthechildren.2.Thisbookisthemostinterestingofallbooks.3.Americaisthemostdevelopedcountryintheworld.4.TheChangjiangRiveristhelongestriverinChina.5.HeisoneofthegreatestscientistsinChina.6.Thecityisoneofthemostbeautifulcitiesintheworld.7.Lucyisoneofthetallestgirlsinherclass.8.Givemybestwishestoyou.9.Heismybestfriend.形容词最高级的用法(…in…;…of…)那个短发的女孩是我们班最高的.今天是一年中最热的一天.他的房间是三个中最干净的一个.上海是中国最大的城市.Thegirlwithshorthairisthetallestinourclass.Todayisthehottestdayoftheyear.Hisroomisthecleanestofthethree.ShanghaiisthelargestinChina.1.Thenewbuildingishigherthantheoldone.Thoseapplesarebiggerthantheseones.2.Hisshirtismoreexpensivethanmine.如果主语是物主代词+名词，那么后面要用名词性物主代词。比较级必须在同类中进行，即人与人比，物与物比，而且比较结构前后的词语要对称，特别注意在than或as之后不要漏掉可能出现的替代词that，those,one,ones.3.KateismorebeautifulthanLilyis.SheisfiveyearsolderthanIam.Idrinkmoreteathanhe(does).than前后句子的时态相同。通常用be动词情态动词can,may,must,could,should和助动词do,does,did,will，have等来简答。4.Ihavemorepensthanyou(do).many,much,little,few等词必须带名词。5.Thecityisoneofthemostbeautifulcitiesintheworld.oneof+the+最高级+复数名词Which/Who…+比较级，AorB?Which/Who…+最高级，A，BorC?6.Whoisolder,JimorTom?Whoisthetallest,Jim,MikeorTomWhichlanguageis____,English,FrenchorChinese?A.difficultB.moredifficultC.themostdifficultC7.Maryisthetallestofallthesistersinthefamily.在使用形容词最高级时，一定要把自己包括在比较的范围内。8.ThisisthethirdlargestcityinChina.当表示“第二，第三”等意思时，经常在最高级的前面加second,third,等词。9.It’sourlargestmachineinourfactory.当最高级前有物主代词修饰时，其前不加定冠词the.双音节或多音节形容词和副词的比较级和最高级的特殊情况：1、一般是在原级前加more构成比较级，在原级前加most构成最高级。beautiful–morebeautiful–mostbeautifulinteresting–moreinteresting–mostinterestingdangerous–moredangerous–mostdangerous2、某些单音节形容词，加more,most构成比较级和最高级。glad–moreglad–mostgladpleased–morepleased–mostpleasedtired–moretired–mosttiredoften-moreoften-mostoften3、表示在两者之间相差的程度用“具体数字+比较级+than+比较对象”。eg:Theroadistwometreslongerthanthatone.这条公路比那条公路长两米。Thispencilisfourinchesshorterthanthatone.这只铅笔比那只铅笔短四英寸。4、有些双音节和单音节形容词，既可以加er或est构成比较级和最高级，也可以加more和most构成比较级和最高级。friendlyhugecalmfreetrueclever5、形容词原级的比较。形容词的原级与as……as连用表示肯定意思，是“和……一样”的意思；与notas/so……as连用表示否定意义，是“不如”或“不一样”的含义。Sheisasprettyashermother.Thebookisasnewasthatone.Thestoryisasinterestingasthatone.Thequestionisnotas/sodifficultasthatone.Mybikeisnotas/sogoodasyours.6、形容词比较级的修饰。比较级前面可以用even(更加)，much(……得多)，far(……得多)，alittle(……一点)，abit(一点)，alot(大量)，still(还，还要)等词语表示不定程度或数量。eg:Iamevenlesslucky.Sheisfarbetterthanmeatwriting.Thispenismuchbetterthanthatone.TomisalittleshorterthanhisfriendJim.7.形容词的比较级+and+形容词的比较级（前后形容词是同一个）越来越……Sheisbecomingthinnerandthinner.Ourcountryisbecomingricherandricher.Therearemoreandmorestudentsinourschool.Livingintheworldisbecomingmoreandmoredifficult.8、the+形容词的比较级+……+the+形容词的比较级表示“越……，就越……”Themoreyoueat,thefatteryouwillbe.Theharderyoustud