(1)如果动词原形以一辅音加一不发音的-e结尾,一般应去掉e再加ing:write—writing,hope—hoping,care—caring,stare—staring,plane—planing,have—having,save—saving, produce—producing, breathe—breathing (2)以-ie结尾的动词应先将e去掉,将i变成y然后再加-ing:die—dying,tie—tyin...