1、一、规则动词(Regullar Verbs) 的过去式由“动词原形+-ed”构成，具体变化有：1. 一般的直接在词尾加-ed。如: wantwanted, workworked, needneeded, cleancleaned2. 以不发音的e结尾的在词尾加-d。如：likeliked, livelived, useused, movemoved smile-smiled; hope-hoped. 注意：ie结尾动词,直接加d: died;tied.3. 以一个元音字母加一个辅音字母结尾的重读闭音节动词，先双写结尾的辅音字母，再加-ed。如：stopstopped, triptripped
2、planned;4. 以辅音字母加y结尾的动词，先把y变成i，再加-ed。如：studystudied, carrycarried, hurryhurried, marrymarried worried; studied.注意：规则动词过去式加“ed”后的发音规则：在浊辅音和元音后面 dcalled k:ld borrowed brd movedmu:vd 在清辅音后面 t helpedhelpt passedpa:st 在t d音后面 id startedsta:tid countedkauntidneededni:did countedkauntid补充说明：二、不规则动词(Irregul
3、ar Verbs)的过去式大体上归纳有以下记忆法：1. 以t结尾的词，过去式与原形相同。如：putput, letlet, cutcut, beatbeat readread must-must2. 以d结尾的词，把d变成t。如:buildbuilt, lendlent, sendsent, spendspent3. 以n结尾的词，在词后加t。如：meanmeant, burnburnt, learnlearnt4. 以ow / aw结尾的词，把ow / aw变成ew。如：blowblew, drawdrew, knowknew, growgrew throwthrew（动词show除外，sh
4、owshowed）5. 含有双写字母的词，将双写改为单写，在词尾加t。如：keepkept, sleepslept, feelfelt, smellsmelt sweepswept6. 含有元音字母o / i的词，将o / i变成a。如：comecame becomebecame singsang, givegave, sitsat, drinkdrank7以ought和aught结尾，且读音是 :t的过去式。如：bringbrought，buy bought，thinkthought，catchcaught，teachtaught8把重读开音节中的i改为o，变成过去式。如：drivedrov
5、e，riderode，writewrote9动词原形中的e改为o，如：getgot，forgetforgot10动词原形中的ee改为e，如：feedfed，meetmet11动词原形中的eak改为oke，如：breakbroke，speakspoke12动词原形中的ell改为old，如：sellsold，telltold13动词原形中的an改为oo，如：standstood，understandunderstood14以ould结尾且读音为ud的情态动词过去式。如：cancould，shallshould，willwould15在动词原形后加d或t变成过去式，并且发生音变。如：hearhi heardh :d， sayseisaidsed，meanmi:nmeantment16不符合上述规律的动词过去式。如：am，iswas，arewere，buildbuilt，dodid，eatate，fallfell，findfound，flyflew，gowent，have has had，holdheld，leaveleft，makemade，maymight，runran，seesaw，taketook
