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英语动词过去式和过去分词的变化规则
动词过去式和过去分词的变化规则
动词过去式和过去分词有规则变化和不规则变化两种。
一. 规则变化
1. 一般情况直接加ed,如ask—asked, work—worked
2. 以不发音的e结尾,只加d,如love—loved, dance—danced
3. 以辅音字母加y结尾,把y变为i,再加ed,如try—tried, study—studied
4. 以一个元音字母和一个辅音结尾的重读闭音节结尾的动词(以重读闭音节或r音节结尾而末尾只有一个辅音字母),先双写末尾这个辅音字母,再加ed,如clap / shop / trip / chat / beg / drop / fit / hug / plan / pat / regret / control
注:A. 以l结尾的动词,尾音节重读时,双写l,如control—controlled;尾音节不重读时,双不双写都可以,如travel—traveled(美) /travelled(英) 。
B. 读音与说明:
①-ed在清辅音音素后发音为[t]: helped, liked, finished, fetched, stopped, clapped
②-ed在浊辅音和元音后发音为[d]: believed, changed, planned, preferred, followed, stayed
③-ed在[t]、[d] 后发音为[id]: wanted, needed, admitted, permitted
二. 不规则变化
英语中有些动词的过去式和过去分词形式变化不规则,可主要分为几种情况。
【AAA型】:
put—put—put cut—cut—cut shut—shut—shut
set—set—set hit—hit—hit hurt—hurt—hurt
cost—cost—cost ★read/ri:d/—read/red/—read/red/ let—let—let
burst—burst—burst (n. / v. 爆发,突发;爆炸)
cast—cast—cast ( v. 1. 投,掷,抛,扔,撒 2. 投射(光、影、视线等)[(+at/on)] 3. 脱落;蜕(皮);丢)
rid—rid—rid (vt. 使摆脱;使去掉) spread—spread—spread
【ABB型】:
(原形→aught / ought→aught / ought)
catch caught caught teach taught taught bring brought brought
buy bought bought think thought thought
【原形→元音变化→元音变化】
sit sat sat meet met met find found found
get got
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