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1、单三形式单三形式 现在分词现在分词 过去式过去式主语是第三人称单数形式时主语是第三人称单数形式时,动词的变化动词的变化1.1.一般在词尾加一般在词尾加s s2.2.以以 o o、s s、x x、shsh、chch 结尾的动词,在词尾加结尾的动词,在词尾加-es-esgetget、makemake、cookcook、needneedgogo、dodo、missmiss、passpass、teachteach、watchwatch、catchcatch、matchmatch、touchtouch、washwash、fishfish、finishfinish、smashsmash、boxbox、re
2、laxrelax、mixmix、faxfaxflyfly、fryfry、trytry、crycry、drydry、carrycarry、studystudy、worryworry、embodyembody体现具体表达、体现具体表达、justifyjustify 证明、证明、emptyempty、playplay、staystay、buybuy、praypray、paypay、saysay、laylay 下蛋下蛋havehavehashas、3 3。以“辅音字母。以“辅音字母+y+y”结尾的动词,把”结尾的动词,把 y y 改改 i i 再加再加eses4 4。以“元音字母。以“元音字母+y+y
3、”结尾的动词,直接加”结尾的动词,直接加 s s5 5。不规则变化。不规则变化动词的动词的 inging 形式构成法形式构成法1.1.一般在词尾加一般在词尾加-ing-ing2.2.以(不发音的)以(不发音的)e e 结尾的词,去结尾的词,去 e e 加加-ing-ing3.3.以重读闭音节结尾的动词,呈现以重读闭音节结尾的动词,呈现“辅“辅+元元+辅”结构辅”结构需双写最后一个字母再加需双写最后一个字母再加-ing-ingdodo、meetmeet、watchwatch、washwash、readreadcloseclose、dancedance、livelive、likelike、love
4、love、borebore、phonephone、rideride、movemove、hopehope、decidedecide、writewrite1 1、一个、一个 mm、两个、两个 d d、两个、两个 g g(swim/nod(swim/nod,rid/dig,begrid/dig,beg)2 2、三个、三个 n,n,四个四个 p p、1111 个个 t t(run(run,winwin,beginbegin)(dip,dropdip,drop,mopmop,stopstop)(sit,hitsit,hit,fitfit,setset,getget,let,putlet,put,cutc
5、ut,regretregret,forgetforget,patpat)lielielyinglying、diediedyingdying4.4.以以 ieie 结尾的动词,把结尾的动词,把 ieie 改为改为 y y 再加再加inging动词的过去式的构成法动词的过去式的构成法1.1.一般在词尾加一般在词尾加-ed-ed2 2。以(不发音的)。以(不发音的)e e 结尾的词,在词后直接加结尾的词,在词后直接加-d-dwatchwatch、washwash、openopen、playplaycloseclose、dancedance、livelive、likelike、lovelove、bor
6、ebore、phonephone、rideride、movemove、hopehope、decidedecide、writewriteflyfly、fryfry、trytry、crycry、drydry、carrycarry、studystudy、worryworry、embodyembody、justifyjustify、emptyempty、shopshop、stopstop、planplan、triptrip、begbeg、hophop、skipskip、dragdrag、dropdrop、dotdot、dripdrip、fretfret、3 3。以“辅音字母。以“辅音字母+y+y”结尾
7、的动词”结尾的动词,把把 y y 改改 i i 再加再加 eded4 4。以重读闭音节结尾的动词,呈现“辅。以重读闭音节结尾的动词,呈现“辅+元元+辅”结辅”结构构需双写最后一个字母再加需双写最后一个字母再加eded5 5。不规则变化。不规则变化规则动词词尾加规则动词词尾加eded 有三种读音:有三种读音:1.1.在清辅音后读作在清辅音后读作t.t.如如:asked:asked,helped,watched,stoppedhelped,watched,stopped2 2 在浊辅音和元音后读作在浊辅音和元音后读作dd。如:。如:enjoyed,studiedenjoyed,studied,mo
8、vedmoved,calledcalled3 3。在在 t/dt/d 后读作后读作idid.如:如:wanted,neededwanted,needed不规则动词的过去式见课本后的不规则动词表不规则动词的过去式见课本后的不规则动词表.大体上归纳有以下几条记忆法:大体上归纳有以下几条记忆法:1.1.以以 t t 结尾的词结尾的词,过去式与原形相同。过去式与原形相同。如:如:putputput,let-letput,let-let,cutcutcutcut,beatbeatbeatbeat,costcostcostcost,hithithithit2 2。以以 d d 结尾的词,把结尾的词,把 d
9、 d 变成变成 t t。如:如:buildbuildbuilt,lend-lentbuilt,lend-lent,sendsendsent,spendsent,spendspentspent(read-readread-read)3.3.以以 n n 结尾的词,在词后加结尾的词,在词后加 t t。如:如:meanmeanmeantmeant,burnburnburntburnt,learnlearnlearntlearnt4 4。以以 ow/awow/aw 结尾的词,把结尾的词,把 ow/awow/aw 变成变成 ewew。如:如:blowblowblewblew,drawdrawdrew,k
10、nowdrew,knowknew,grow-grewknew,grow-grew,throwthrowthrewthrew5.5.含有双写字母的词,将双写改为单写,在词尾加含有双写字母的词,将双写改为单写,在词尾加 t t。如:如:keepkeepkept,sleepkept,sleepsleptslept,feel-felt,smellfeel-felt,smellsmeltsmelt,sweep-sweptsweep-swept6.6.只去掉一个只去掉一个 e e:feedfeedfedfed,meetmeetmetmet7 7。闭音节词,改闭音节词,改 i i 为为 a a。如如:sit
11、:sitsatsat,swim-swam,ring-rang,drinkswim-swam,ring-rang,drinkdrankdrank,singsingsangsang,beginbeginbeganbegan,8 8。开音节词开音节词,改改 i i 为为 o o。如:如:drivedrivedrovedrove,ride-rode,writeride-rode,writewrotewrote,9.buy-bought,bring9.buy-bought,bringbrought,thinkbrought,thinkthought,catch-caughtthought,catch-c
12、aught,teach-taughtteach-taught10.lay10.laylaidlaid,saysaysaidsaid,paypaypaidpaid 母鸡母鸡“下蛋下蛋”并并“摆放摆放”好后,好后,“说说”,“付钱付钱 1111。is/amis/amwas,was,arearewere,were,have/hashave/hashadhad,dododid,did,gogowentwent,run-ran,run-ran,seeseesawsaw,flyflyflewflew,getgetgot,got,winwinwonwon,eateatate,ate,comecomecame,came,makemakemademade,telltelltoldtold,taketaketooktook,fall-fell,fall-fell,speak-spoke,wearspeak-spoke,wearworewore,stand-stoodstand-stood,become-becamebecome-became,forget-forgotforget-forgot,hearhearheardheard,can-couldcan-could,willwillwould,shallwould,shallshouldshould,findfindfoundfound