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1、名词单数变复数变化规则1.一般名词复数是在名词后面直接加上“s”,如:map→maps,bag→bags,book-books等;2.以s,x,sh,ch结尾的词加“es”,如:bus→buses,watch→watches,box-boxes等;3.以f或fe结尾的名词变复数时,去掉f,fe加ves的名词有:knife→knivesleaf→leaveswife→wiveslife→livesthief→thieves4.以o结尾的名词变复数时:a)加s的名词有(无生命):photo→photos,piano→pianos,radio→radiosb)加es的名词有(有生命):pota
2、to→potatoestomato→tomatoes5.以辅音字母+y结尾的词,变y为i加es,如:baby→babies,family-families,study-studies等;以元音字母+y结尾的名词变复数时,直接加s变复数,如monkey→monkeys,holiday→holidays,storey→storeys(楼层);6.oo变ee的单词:foot-feet,goose-geese,tooth-teeth;7.a变e的单词:man-men,woman-women,policeman-policemen;8.复数与原形一致的单词:fish-fish,sheep-shee
3、p,deer-deer,Chinese-Chinese,动词ing形式的用法及变化规则一.动词现在分词由动词原形在词尾加ing构成,其规则如下: 1)一般情况下直接加ing think---thinking sleep---sleeping study---studying speak---speaking carry---carrying say---saying2)以不发音的字母e结尾的单词,去掉字母e,再加ing wake---waking m
4、ake---making come---coming take---taking leave---leaving have---having 3)以重读闭音节结尾,呈现“辅音,元音(aeiou),辅音”结构的动词,先双写末尾的辅音字母,再加ing 。这类词有:shop,begin,cut,put,get,hit,run,set,sit,spit,stop,swim,beg,drop,fit,nod,dig,forget,regret,rid, 等。 4)以ie结尾的动词,把ie改为y ,再加ing如:die---dying lie---lying 动词的
5、第三人称单数现在式变化规则:1)一般由动词原形加-s get-gets play-plays 2)以e结尾的动词,加-s like-likes make-makes 3)以o结尾的动词加-es go-goes do-does 以s, x, ch, sh等字母结尾的动词,后面加-es kiss-kisses fix-fixes teach-teaches fish-fishes 4)以辅音字母加y结尾的动词,先将y变i, 再加-es fly-flies study-studies 5) have –h
6、as