形容词比较级(一)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(二)英语形容词比较级的构成英语形容词比较等级有三个:原级,比较级和最高级。形容词比较等级形式变化有规则的和不规则的两种。规则变化1)单音节词末尾加-er(比较级),-est(最高级)【例】原级比较级最高级greatgreatergreatestsmallsmallersmallestcleancleanercleanest2)单音节如以e结尾,只加-r(比较级),-st(最高级)【例】finefinerfinestwidewiderwidest3)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)【例】bigbiggerbiggesthothotterhottestredredderreddest4)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。【例】clevercleverercleverestnarrownarrowernarrowestableablerablesteasyeasiereasiest5)其它双音节和多音节词皆在前面加单词more和most。【例】carefulmorecarefulmostcarefuldifficultmoredifficultmostdifficultdeliciousmoredeliciousmostdelicious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等。形容词的比较等级的用法:比较级用于二者的比较。【例】LiPingisolderthanWangHai.李平比王海年纪大。TherearemorestudentsinClassOnethaninClassTwo.一班比二班学生多。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……可用状语much,alittle,even等修饰:HemadefewermistakesthanIdid.HeisevenricherthanI.3、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、(1)too…to与so…thatsb.can’t…的句型转换:前者为简单句,主语只有一个,而后者为复合句,主语有两个,试比较: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、用比较级表示最高级:约翰是班里最高的男生。Johnistallerthananyotherboyintheclass.Johnisthetallestboyintheclass.Johnistallerthananyotherboy.5、themore…..themore….表示“越……越……”:Themorebooksyouread,thewideryourknowledgeis.Themorefoodyoueat,thefatteryouare.6、moreandmore….表示“越来……越……”:Moreandmorestudentsrealizedtheimportanceofaforeignlanguage.Ourcountryisgettingstrongerandstronger.