规则动词的过去式变化如下

1、规则动词的过去式变化如下：1、一般情况下,动词词尾加 -ed ,如：work -worked play-played wanted-wanted act-acted 2、以不发音的 -e 结尾动词,动词词尾加 -d,如：live-lived move-moved taste-tasted hope-hoped 3、以辅音字母 + y结尾的动词,把-y变为-i 再加-ed,如：study-studied copy-copied cry-cried carry-carried 4、以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 -ed,如：stop -st

2、opped 5、不规则动词的过去式变化规律性不强,须多加记忆.go went make made get got buy - bought come - came fly-flew 不规则动词的过去式的构成 1把动词原形中的i改为a,变成过去式.如：beginbegan,drinkdrank,givegave,ringrang,singsang,sitsat,swimswam 2把重读开音节中的i改为o,变成过去式.如：drivedrove,riderode,writewrote 3改动词原形中的aw ow为ew,变成过去式.如：drawdre

3、w,growgrew,knowknew,throwthrew（动词show除外,showshowed） 4动词原形中的e改为o,变成过去式.如：getgot,forgetforgot 5动词原形中的ee改为e,变成过去式.如：feedfed,meetmet 6动词原形中的eep改为ept,变成过去式.如：keepkept,sleepslept,sweepswept 7动词原形中的eak改为oke,变成过去式.如：breakbroke,speakspoke 8动词原形中的ell改为old,变成过去式.如：sellsold,telltold

4、0;9动词原形中的an改为oo,变成过去式.如：standstood,understandunderstood 10以ought和aught结尾,且读音是 :t的过去式.如：bringbrought,buy bought,thinkthought,catchcaught,teachtaught 11以ould结尾且读音为ud的情态动词过去式.如：cancould,shallshould,willwould 12把动词原形中的o改为a,变成过去式.如：comecame,becomebecame 13在动词原形后加d或t变成过去式,并且发生音变.如：hear

5、hi heardh :d,sayseisaidsed,meanmi:nmeantment 14动词的过去式与动词原形一样.如：letlet,mustmust,putput,readreadred 15不符合上述规律的动词过去式.如：am,iswas,arewere,buildbuilt,dodid,eatate,fallfell,feelfelt,findfound,flyflew,gowent,have has had,holdheld,leaveleft,makemade,maymight,runran,seesaw,taketook 过去式“-ed”的发音规则 （1）动词词尾为“t,d”时,发/ id /音,want wanted （要）need needed （需要） （2）动词词尾为清辅音时,发/ t / 音.help helped （帮助）laugh laughed （笑）look looked （看） kiss kissed （吻）wash washed （洗） watch w