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一.主语是第三人称单数形式时,动词变成三单的规则1.一般在词尾加-sget-gets;make-makes;cook-cooks;need-needs;sing-sings2.以o、s、x、sh、ch结尾的动词,加esgo-goes;box-boxes;miss-misses;catch-catches(追上、捕捉)3.以“辅音字母+y”结尾的动词,把y改i再加esfly-flies(飞);worry-worries;dry-dries(使变干);carry-carries(携带,搬运)4.以“元音字母+y”结尾的动词,直接加sstay-stays;buy-buys;say-says;pay-pays(付款)5.不规则变化have-has巩固练习:将下列动词变为第三人称单数形式1.cry2.read3.study4.watch5.teach6.fix7.come8.try9.wash10.play11.work12.do二.现在分词(动词ing形式)变化规则1.一般在词尾加ingdo-doing;meet-meeting;read-reading;watch-watching2.以不发音的e结尾的动词,去e加ingmake-making;live-living;ride-riding;decide-deciding3.以重读闭音节(最后三个字母:辅音字母+元音字母+辅音字母)结尾的动词,先双写最后一个辅音字母再加ingswim-swimming;win-winning;set-setting;put-putting4.以ie结尾的动词,把ie改为y再加ingdie-dying;tie-tying巩固练习:将下列动词变成现在分词的形式2.eat2.like3.study4.hope5.run6.stop7.lie8.try9.get10.play11.begin12.write三.动词过去式(或过去分词)的变化规则1.一般在词尾加edwatch-watched;open-opened;ask-asked;help-helped2.以不发音的e结尾的动词,在词尾直接加dclose-closed;live-lived;hope-hoped;3.以“辅音字母+y”结尾的动词,把y改i再加edfly-flied;study-studied;worry-worried;dry-dried4.以重读闭音节(最后三个字母:辅音字母+元音字母+辅音字母)结尾的动词,先双写最后一个辅音字母再加edshop-shopped;trip-tripped;skip-skipped(跳过,略过);drop-dropped5.不规则变化put-put;read-read;send-sent;burn-burnt;grow-grewknow-knew;keep-kept巩固练习:将下列动词变成过去式1.write2.like3.study4.play5.meet6.stop7.plan8.sit9.get10.build11.begin12.eat
本文标题:动词的三单、现分、过去式的变化规则
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