文档介绍：一、: (1)一般情况加-s,如:girls,books,pens,bags,boys,days等。(2)以s,x,ch,sh结尾加-es,如:buses,boxes,watches,brushes(3)以o结尾的名词,无生命的名词多加-s,有生命的名词多加-es。(4)以辅音字母加y结尾的名词,变y为i加-es,如:city→cities,story→stories(5)以f或fe结尾的名词变f或fe为v加-es。如:leaf→leaves,knife→knives,shelf→shelves,wife→wives等。:man→men,woman→women,child→children,foot→feet,tooth→teeth,mouse→mice,people→people,sheep→sheep,Chinese→Chinese,Japanese→Japanese,deer→deer二、动词/-ful如:care→careful,use→useful; thank→thankful,help→helpful; wonder→wonderful,forget→-y如:luck→lucky,cloud→cloudy; wind→windy,rain→rainy;sun→sunny, snow→snowy noise-noisy,health→-ly如:friend→friendly,love→lovely,day→-ern如:east→eastern,west→western south→southern,north→northern三、-ty变成名词如:safe→safety,difficult→difficulty -th变成名词如:true→truth,warm→warmth,young→youth四、形容词变副词类形容词修饰名词、代词等作定语或表语;副词修饰动词、形容词或副词作状语。1、一般形容词词尾加-ly变成副词,如:slow→slowly,clear→clearly quick→quickly,quiet→quietlycareful→carefully,sudden→suddenly real→really,polite→politelysafe→safely, wide→widely2、以“辅音字母+y”结尾的,要变y为i加-ly如:easy→easily, happy→happily heavy→heavily,lucky→luckily busy→busily, angry→angrily;3、以元音字母+e结尾,去e加-ly如:true→truly4、以辅音字母加-le结尾,去e加-y如:terrible→terribly possible→possibly5、形容词与副词同形如:fast→fast,early→early,high→high,hard→hard 6、注意:hard作形容词时意思是“困难的;硬的;生硬的”等;作副词时意思是“努力地”。hardly是否定副词,意思是“几乎不”。五、动词变名词类1