6、e)+动词现在分词构成形式的。4)现在分词的几种构成形式:①一般动词后直接+-ing.e.g.do-doingsee-seeingfly-flying以不发音的e结尾,去e加-ing.e.g.take-taking write-writingride-riding以一个元音加一个辅音字母结尾的重读闭音节单词,先双写那个辅音字母,再加-ing.e.g.sit-sitting cut-cutting stop-stopping④以ie结尾的单词,先变ie为y,再加-ing.e.g.lie-lying di