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1、名詞單數(shù)變復(fù)數(shù)變化規(guī)則1．一般名詞復(fù)數(shù)是在名詞后面直接加上“s”，如：map→maps，bag→bags，book-books等；2．以s，x，sh，ch結(jié)尾的詞加“es”，如：bus→buses，watch→watches,box-boxes等；3．以f或fe結(jié)尾的名詞變復(fù)數(shù)時(shí),去掉f，fe加ves的名詞有：knife→knivesleaf→leaveswife→wiveslife→livesthief→thieves4．以o結(jié)尾的名詞變復(fù)數(shù)時(shí)：a）加s的名詞有（無生命）：photo→photos，piano→pianos，radio→radiosb）加es的名詞有（有生命）：pota
2、to→potatoestomato→tomatoes5．以輔音字母＋y結(jié)尾的詞，變y為i加es，如：baby→babies,family-families,study-studies等；以元音字母＋y結(jié)尾的名詞變復(fù)數(shù)時(shí)，直接加s變復(fù)數(shù)，如monkey→monkeys，holiday→holidays，storey→storeys（樓層）；6.oo變ee的單詞：foot-feet,goose-geese,tooth-teeth；7.a變e的單詞：man-men,woman-women,policeman-policemen;8.復(fù)數(shù)與原形一致的單詞：fish-fish,sheep-shee
3、p,deer-deer,Chinese-Chinese,動(dòng)詞ing形式的用法及變化規(guī)則一．動(dòng)詞現(xiàn)在分詞由動(dòng)詞原形在詞尾加ing構(gòu)成，其規(guī)則如下：?1）一般情況下直接加ing????think---thinking?????sleep---sleeping????????????????????????????study---studying???speak---speaking????????????????????????????carry---carrying?????say---saying2）以不發(fā)音的字母e結(jié)尾的單詞，去掉字母e，再加ing?wake---waking????m
4、ake---making????come---coming?take---taking??????leave---leaving????have---having?3）以重讀閉音節(jié)結(jié)尾，呈現(xiàn)“輔音，元音（aeiou），輔音”結(jié)構(gòu)的動(dòng)詞，先雙寫末尾的輔音字母，再加ing?。這類詞有：shop，begin，cut,put,get,hit,run,set,sit,spit,stop,swim,beg,drop,fit,nod,dig,forget,regret,rid,?等。???4）以ie結(jié)尾的動(dòng)詞，把ie改為y?，再加ing如：die---dying?????lie---lying?動(dòng)詞的
5、第三人稱單數(shù)現(xiàn)在式變化規(guī)則：1）一般由動(dòng)詞原形加-s???get-gets????????play-plays??2）以e結(jié)尾的動(dòng)詞，加-s???like-likes?????make-makes??3)以o結(jié)尾的動(dòng)詞加-es???go-goes???do-does???????以s,?x,?ch,?sh等字母結(jié)尾的動(dòng)詞，后面加-es???kiss-kisses?????fix-fixes????teach-teaches????fish-fishes??4)以輔音字母加y結(jié)尾的動(dòng)詞，先將y變i,?再加-es??fly-flies?????study-studies?5)?have?–h
6、as
