形容词原级,比较级和最高级绝大多数形容词有三种形式,原级,比较级和最高级,以表示形容词程度的不同。一、形容词的形式原级:形容词的原级形式就是词典中出现的形容词的原形。例:poortallgreatglad比较级和最高级:形容词的比较级和最高级形式是在形容词的原级形式的基础上变化的。分为规则变化和不规则变化。1.规则变化(1)单音节词末尾加-er(比较级),-est(最高级)原级比较级最高级greatgreatergreatestsmallsmallersmallestcleancleanercleanest(2)单音节如以e结尾,只加-r(比较级),-st(最高级)finefinerfinestwidewiderwidest(3)闭音节单音节词如末尾只有一个辅音字母,须先双写这个辅音字母,再加-er(比较级),-est(最高级)bigbiggerbiggesthothotterhottestredredderreddest(4)少数以-y,-er,ow,-ble结尾的双音节词,末尾加-er(比较级),-est(最高级)。以-y结尾的词,如-y前是辅音字母,则变y为-i,再加-er和-est。以-e结尾的词只加-r和-st。ClevercleverercleverestNarrownarrowernarrowestAbleablerablesteasyeasiereasiest(5)其它双音节和多音节词皆在前面加单词more和most。carefulmorecarefulmostcarefuldifficultmoredifficultmostdifficultdeliciousmoredeliciousmostdelicious2.不规则变化原级比较级最高级good/wellbetterbestbadworseworstmany/muchmoremostlittlelessleastfarfarther/furtherfarthest/furthest注:有些形容词一般没有比较等级。如:right,wrong,woolen等。二、形容词各等级的用法1.原级(同级)比较:as…as…;notas(so)…as…We’llgiveyouasmuchhelpaswecan.Sheisn’tas(so)activeinsportsasbefore.2.比较级:表示两者之间比……更……一般句式的构成:A+is/are+形容词比较级+than+BA是主格B是宾格如:Sheistallerthanme.主格形容词比较级宾格LiPingisolderthanWangHai.李平比王海年纪大。HemadefewermistakesthanIdid.可用状语much,alittle,even等修饰HeisevenricherthanI.3.最高级:形容词最高级前必须加the,副词最高级前常省略the,后面多用of……,in……短语表示范围:Itwasthemost/leastinterestingstoryIhaveeverlistened.Heisthetallestofthethree.4.如果在两者之间表示“最……”时要在比较级前加the,而且还用ofthetwo,ofthepair短语:Johnisthecleverofthetwoboys.Ofthetwoboys,Johnistheclever.三、重点与难点:1.as…as…结构你和汤姆是一样好的孩子。You’reaboyasgoodasTom.=You’reasgoodaboyasTom.2.too…to与so…thatsb.can’t…以及notenoughto句型的转换(1)too…to与so…thatsb.can’t…的转换Themanwastooangrytobeabletospeak.Themanwassoangrythathewasn’tabletospeak.Themilkwastoohottodrink.Themilkwassohotthatwecan’tdrinkit.(2)too…to…与notenoughto句型的转换:Heistooyoungtogetmarried.=Heisnotoldenoughtogetmarried.Thebookistoodifficultformetoread.=Thebookisnoteasyenoughformetoread.3.形容词原级表示比较级含义:约翰不象迈克那么苯。JohnisnotsostupidasMike.JohnislessstupidthanMike.JohnisclevererthanMike.4.比较级表示最高级:约翰是班里最高的男生。Johnistallerthananyotherboyintheclass.Johnisthetallestboyintheclass.Johnistallerthan:anyotherboy.anyoftheotherboy.alltheotherboy.anyoftheothers.anyoneelse.5.Themore…..themore….表示“越……越……”:Themorebooksyouread,thewideryourknowledgeis.Themorefoodyoueat,thefatteryouare.6.moreandmore….表示“越来……越……”:Moreandmorestudentsrealizedtheimportanceofaforeignlanguage.Ourcountryisgettingstrongerandstronger.