现在分词的构成规则

规则动词原形现在分词一般情况直接加-ingbuy,play,watchbuying,finding,watching以不发音的e为结尾的动词去掉e再加ingdance,use,writedancing,using,writing以重读闭音节结尾，末尾只有一个辅音字母的动词，要双写辅音字母再加ingrun,swim,putrunning,swimming,putting少数以ie为结尾的动词，先变ie为y,再加ingdie，tiedying,tying以y结尾的加ingstudybuystudyingbuying现在分词的构成规则