2013秋季八年级英语上.ppt

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1、Unit3I’mmoreoutgoingthanmysister.SectionA形容词adj.Heistall.Heisatallman.talladj.shortadj.longadj.shortadj.thinadj.fatadj.heavyadj.高的矮的，短的长的短的瘦的，薄的肥胖的重的，胖的LiuXiangistall.PanChangjiangisshort.LiuXiangistallerthanPanChangjiang.PanChangjiangisshorterthanLiuXiangthan比(conj.连词).两者之间比较，用形容词

2、比较级Theredboxisbig.Thegreenboxissmall.Theredboxisbiggerthanthegreenbox.Thegreenboxissmallerthantheredbox.Thepurplerulerislong.Thebluerulerisshort.Thepurplerulerislongerthantheblueruler.Thebluerulerisshorterthanthepurpleruler.LinXinruisthin.LiuYifeiisthinner.LiuYifeiisthinnerthanLinXin

3、ru.45kg48kgLiYongismoreoutgoingthanChenglong.ChengLongisoutgoing.LiYongismoreoutgoing.Thewomenarefat.Themanandthewomanarethin.Thewomenarefatterthanthemanandthewoman.大多数形容词和副词有三个等级：原级、比较级、最高级。一、构成1.构成的不规则变化:eg.good/well–better–bestbad/badly–worse–worstmany/much–more–mostlittle–less–le

4、astfar–farther/further–farthest/furthestGrammar:形容词和副词的比较级和最高级2.构成的规则变化:1)单音节词和少数双音节词一般在词尾后加-er或-est.如：cold–colder–coldestnice—nicer–nicest2)重读闭音节词末尾只有一个辅音字母时,先双写这个辅音字母,再加-er或-est。如:big–bigger–biggestthin–thinner–thinnest3)以“辅音字母+y”结尾的双音节词，先改y为i,再加-er或-est。如：easy–easier–easiesthappy–

5、happier–happiest4)多音节词和部分双音节词在词前加more或most。如：delicious–moredelicious–mostdeliciousinteresting–moreinteresting–mostinteresting比较级规则变化口诀：比较级，要变化，一般词尾加er。(long-longer)词尾若有哑音e,直接加r就可以。(nice-nicer)重读闭音节，单辅音字母要双写。(hot-hotter)辅音字母若加y,记得把y变为i。(happy-happier)Readinpairsnew—newerbig—biggerthin

6、—thinnerlarge—largernice—nicereasy—easierheavy—heaviergood—betterbad—worsesmart—smarterwild—wilderfunny—funniertall—tallermany—moremuch—morewell—betterlong—longershort—shortersmall—smaller二、用法1.比较级表示两者(人或事物)的比较。eg.IamtallerthanTom.Mydressismorebeautifulthanhers.2.最高级表示三者或三者以上(人或事物)的比

7、较,其中有一个在某一方面超过其他几个时,用最高级。最高级的前面一般要加定冠词the,后面可带of(in)短语来说明比较的范围。如：Sheistheyoungestintheclass.Jasonisthetallestofthethree.Whosehandwritingisthebestofall?3.在形容词比较级前还可用much,even,still,alittle来修饰,表示“……的多”,“甚至……”,“更……”,“……一些”。如：Thiscityismuchmorebeautifulthanbefore.She’salittlemoreoutgoing

8、thanme.It’sa