过去式的不规则变化和规则变化.pdfVIP

规则变化

【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：want--—wanted，playplayed

②以不发音的字母e结尾的动词，直接加d。

如:hope——-hoped，live—--lived

③重读闭音节单词需双写最后一个辅音字母，再加ed。

如:stop--—stopped,prefer--—preferred

④以辅音字母+y结尾的动词变y为i，再加ed。

如：study——-studied,worryworried

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

动词过去式变化规则

AAA型（动词原形、过去式、过去分词同形）

cost(花费）costcostcut（割）cutcut

hit（打）hithithurt伤害）hurthurt

let(让）letletput（放）putput

read（读）readread

（2)AAB型（动词原形与过去式同形）

beat（跳动）beatbeaten

（3）ABA型（动词原形与过去分词同形）

become（变成）becamebecomecome（来)camecome

run(跑）ranrun

（4)ABB型（过去式与过去分词同形)

dig（挖）dugdugget（得到）gotgot

hang（吊死）hangedhangedhang(悬挂）hunghung

hold（抓住)heldheldshine（照耀)shoneshone

sit(坐）satsatwin（赢）wonwon

meet(遇见）metmetkeep(保持）keptkept

sleep(睡)sleptsleptsweep（扫）sweptswept

feel（感觉）feltfeltsmell（闻）smeltsmelt

leave(离开)leftleftbuild（建设）builtbuilt

lend(借出）lentlentsend（传送)sentsent

spend（花费）spentspentlose（丢失)lostlost

burn（燃烧）burntburntlearn（学习）learntlearnt

mean（意思是）meantmeantcatch（抓住)caughtcaught

teach(教）taughttaughtbring(带来)broughtbrought

fight（战斗)foughtfoughtbuy（买）boughtbought

think（想）thoughtthoughthear（听见）heardheard

sell（卖）soldsoldtell（告诉）toldtold

say(说)saidsaidfind(找到)foundfound

have/has(有）hadhadmake（制造)mademade

stand（站）stoodstoodunderstand明白understoodunders