动词时态变化.doc

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1、2、动词词形变化一览表：(1)规则动词变化表：规则变化原形动词结尾情况现在时单三人称现在分词过去式和过去分词一般情况+s+ing+eds,x,ch,sh,o结尾+es+ing+ed辅音字母+y结尾y→i,+es+ingy→i,+ed重读闭音节一元一辅结尾+s双写辅音字母,+ing双写辅音字母,+ed不发音的e结尾+s去掉e,+ing+die结尾+sie→y,+ing+d不规则变化have→has；be→is(无)(见不规则动词变化表)注意：①在加ing或ed时动词如果以“r”结尾,尾音节又重读的动词,“r

2、”应双写。②s/es的读音规则：在清辅音后读[s]；在浊辅音后和元音后读[z]；在[s]、[F]、[z]、[tF]、[dV]后读[iz].③ed的读音规则：在清辅音后读[t]；在浊辅音后和元音后读[d]；在[t]、[d]后读[id].(2)不规则动词变化表：(原形→过去式→过去分词)be(am,is)wasbeenloselostlostbe(are)werebeenmakemademadebeatbeatbeatenmaymight　becomebecamebecomemeanmeantmeantbeg

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