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