1.英语动词加-ing,通常是在原形词尾直接加-ing 构成:cough-coughing,climb—climbing,stand—standing,fight—fighting2.以-e 结尾的动词(1)假如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-tying,vie-vying,lie—lying(3)以—ee,-oe,-ye 结尾的动词加-ing 时应保留词尾 e:see—seeing,flee-fleeing,free—freeing , agree-agreeing , hoe—hoeing, dye—dyeing,eye—eyeing(4)以-ue 结尾的动词大多应先去 e 再加-ing:sue—suing,imbue—imbuing,construe-construing,pursue—pursuing,rue—ruing有时,词尾 e 可去掉也可保留:glue—gluing 或 glueing,cue—cuing 或 cueing, blue—blueing 或 bluing,true—truing 或 trueing,clue—clueing 或 cluing3.以一元音加一辅音结尾的动词(1)假如动词最后一音节为重读闭音节,最后一个字母需要重复:run-running , stop-stopping, hop—hopping , plan—planning