用以修饰名词，表示事物的特征用以修饰名词，表示事物的特征的词。的词。e.g.long,empty,cheap,hungry,etc.在句中作定语、表语、宾语补足语等定语、表语、宾语补足语等成分．成分．e.g.Heisagoodstudent.Ihavesomethingimportanttotellyou.当形容词修饰由some-,any-,no-,every当形容词修饰由构成的不定代词时,形容词要放在这些构成的不定代词时形容词要放在这些不定代词的之后.不定代词的之后e.g.Isthereanythinginterestingintoday’snewspaper?Thetreesturngreeninspring.Wearealoneontheisland.只能作表语，不能作定语的形容词只能作表语，你能说出几个？你能说出几个？aloneafraidawakeasleepaliveableillWemustkeeptheclassroomclean.Hemadeushappy.Colouritgreen.Let’sLetsfillintheblanks,happierdrierdriestearliestbighot以重读闭音节结尾的词末尾只有一earlier个辅音字母应双写辅音字母再加erthinfatwet个辅音字母应双写辅音字母再加narrowest或estmostdifficultnarrowercleverest以辅音字母+y结尾的词变为再加-er,happydrypopular结尾的词变为i再加以辅音字母结尾的词变为再加mostearlymoreclevererdifficult或-estmostslowlymorepopularnarrow少数以-er,-ow结尾的双音节少数以结尾的双音节clevermoreslowly词可加-er或词可加或-est多音节词和多数双音节词在其前面加more和mostdifficultpopularslowlytallest比较最高hardest化tallerharder原级largerwiderlargestwidest级biggest级biggerhardtallhotter单音节词在词尾加-er(比较级或比较级)或单音节词在词尾加比较级hottestfattestfatterwetterlargewideest(最高级以字母接尾的词加或-wettest最高级)以字母接尾的词加-r或最高级以字母e接尾的词加happiestst词尾变原级goodwellbadillmanymuchlittlefarold比较级最高级betterworsemorebestworstmostlessleastfarther/furtherfarthest/furthestolder/elderoldest/eldestas+形容词原形形容词原形+as形容词原形TomisastallasMike.TomisthreetimesasoldasMike.Thereareasmanystudentsinourschoolasyours.形容词原形+as否定notas+形容词原形形容词原形“和…不一样”和不一样”notso+形容词原形形容词原形+as或形容词原形“不及／不如不及／不及不如…TomisnotastallasMike.TomisnotsotallasMike.so+形容词原级形容词原级+that丛句丛句such+名词＋that丛句名词＋名词丛句Heissobigthathecan’tentertheroombythedoor.…too+原级todosth.原级+原级Heistooyoungtojointhearmy.形容词原级+形容词原级enoughtodosth.Thistruckisbigenoughtocarry5tons.比较级+than…比较级Ourschoolislargerthantheirs.Thisbridgeislongerthanthatone.表示两者之间的选择，表示两者之间的选择，可使用“Whichis+比较级，…or…?”比较级，Whichislonger,thisoneorthat?使用形容词比较级时注意：在形容词比较级前可用much,even,still,a在形容词比较级前可用little,far,alot来修饰，表示程度。来修饰，来修饰表示程度。可用“比较级形式+thananyother+单数名可用“比较级形式单数名词来表达最高级的意思Heistallerthananyotherstudentintheschool。可用the+比较级形式比较级形式+ofthetwo