过去式的变化规则.doc

Forpersonaluseonlyinstudyandresearch;mercialuse【过去式的变化规则】①一般情况下,在动词原形后直接加ed。如:wanted,played。②以不发音的字母e结尾的动词,直接加d。如:hoped,lived。③重读闭音节单词需双写最后一个辅音字母,再加ed。如:stopped,shipped。④以辅音字母+y结尾的动词变y为i,再加ed。如:studied,worried。⑤有些动词不符合上面的规则,需要特殊记忆。如:am(is)-was,are-were,go-went,eat-ate,Swim-swam,buy-bought,see-saw,Teach-taught,bring-brought,think-thought,Fall-fell,hurt-hurt,break-broke,win-won,Lose-lost规则动词过去式加“ed”后的发音规则:在浊辅音和元音后面[d]CalledborrowedMoved[mu:vd]edanswered在清辅音后面[t]Askedfinishedhelped[helpt]passed[pa:st]Reached在[t]音后面[id]wanted['wCntid]started['sta:tid][d]音后面[id]Needed['ni:did]counted['kauntid]0清:/p//t//k//f//F/s//W//tF//ts//tr/浊:/b//d//g//v//V//z//T//dV//dz//dr/补充说明:规则动词的过去式由“动词原形+-ed”构成,具体变化有:-ed。如:want—wanted,work—worked,need—needed,clean—-d。如:like—liked,live—lived,use—used,move—,先双写结尾的辅音字母,再加-ed。如:stop—stopped,trip—,先把y变成i,再加-ed。如:study—studied,carry—carried,hurry—hurried,marry—married不规则动词的过去式大体上归纳有以下六条记忆法:,过去式与原形相同。如:put—put,let—let,cut—cut,beat—,把d变成t。如:build—built,lend—lent,send—sent,spend—,在词后加t。如:mean—meant,burn—burnt,learn—,把ow/aw变成ew。如:blow—blew,draw—drew,know—knew,grow—,将双写改为单写,在词尾加t。如:keep—kept,sleep—slept,feel—felt,smell—,将o/i变成a。如:sing—sang,give—gave,sit—sat,drink—drank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-