动词ing形式的变化规则:(1)一般情况下,直接在动词后加-ingwork----workingsleep-----sleepingstudy-----studying(2)动词以不发音的-e结尾,要去-e加-ingtake-----takingmake-----makingdance-----dancing(3)重读闭音节的动词,要双写词尾字母,再加-ingcut-----cuttingput-----puttingbegin------beginning(4)以-ie结尾的动词,把变成y再加-inglie-----lyingtie-----tyingdie-----dying