动名词和现在分词 构成
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动名词的规则变化

1 一般情况下,直接在动词后加-ing (现在进行时)work ---- working study ----- studying

2 动词以不发音的-e结尾,要去-e加-ing take ----- taking make ----- making

3 重读闭音节的动词,要双写词尾字母,再加-ing cut ----- cutting put begin

4 以-ie结尾的动词,把变成y再加-ing lie ----- lying tie ----- tying die ----- dying