1 一般情况下,直接在动词后加-ing work ---- working sleep ----- sleeping study ----- studying 2 动词以不发音的-e结尾,要去-e加-ing take ----- taking make ----- making dance ----- dancing 3 重读闭音节的动词,要双写词尾字母,再加-ing cut ----- cutting put ----- putting begin ------ beginning 4 以-ie结尾的动词,把变成y再加-ing lie ----- lying tie ----- tying die ----- dying