过去分词的变化规则

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1、附：过去分词的变化规则　1.规则动词：规则动词的过去分词与规则动词的过去式的构成规则相同。　　(1)一般动词，在词尾直接加“ed”　　work---worked---workedvisit---visited---visited　　(2)以“e”结尾的动词，只在词尾加“d”　　live---lived---lived　　(3)以“辅音字母+y”结尾的动词，将“y”变为“i”，再加“ed”　　study---studied---studiedcry---cried---cried　　(4)重读闭音节结尾，末尾只有一个辅音字母，双写该辅音字母，再

2、加“ed”　　stop---stopped---stoppeddrop---dropped--dropped　2.不规则动词　　AAA型burstburstbursthurthurthurtletletletcutcutcutcostcostcosthithithitputputputsetsetsetshutshutshutspreadspreadspreadreadreadread(read原形和过去分词发音为/ri:d/,过去式发音为/red/)　　AAB型beatbeatbeatenABA型becomebecamebecomerunr

3、anruncomecamecome　　ABB型bringbroughtbroughtbuyboughtboughtbuildbuiltbuiltburnburntburntcatchcaughtcaughtdigdugdugfeelfeltfeltfightfoughtfoughtfindfoundfoundhearheardheardholdheldheldkeepkeptkeptlaylaidlaidleadledledloselostlost　makemademademeetmetmetsellsoldsoldshootshotshot

4、sitsatsatstandstoodstoodsweepsweptsweptteachtaughttaughttelltoldtoldthinkthoughtthoughtwinwonwon　　ABC型beginbeganbegunblowblewblownbreakbrokebroken　　choosechosechosen　drawdrewdrawndrivedrovedriven　　drinkdrankdrunkflyflewflownwritewrotewritten　　forgetforgotforgottenfreezefroz

5、efrozengivegavegivengrowgrewgrownknowknewknownrideroderiddenriseroserisenringrangrungshakeshookshakensingsangsungsinksanksunkswimswamswumthrowthrewthrown课堂练习一．用already,yet,ever,never,since,for填空。1.Mybrotherhas_________________finisheddoinghishomework.HeiswatchingTVnow.2.Mr.

6、KinghastaughtEnglishinthisschool_________________tenyears.3.----Haveyou_________________readthisstory?----No,Ihave_________________readit.4.----Hasthebusarrived_________________?----No.5.----Howlonghaveyouknowntheoldman?----_________________fiveyearsago.二．用since与for填空。1.Heh

7、aslivedinBeijing___________lastyear.2.OurteacherhasstudiedEnglish__________abouttenyears.3.I’veknownhim___________wewerechildren.4.It’saboutfifteenyears_________sheleftthecity.5.TheGreenshavebeeninChina________Mr.GreenfoundajobinShenzhen.三．根据句意，用所给词的适当形式填空。1._______youever_

8、_______(visit)the2010WorldExpoinShanghai?2.I________(notwork)thismathproblemoutyet