Liz suddenly felt something ______ her on the shoulder.A.touchB.to touchC.touchingD.touched答案選A，請(qǐng)問(wèn)為什么不用touching呢？

熱心網(wǎng)友

感官動(dòng)詞后加doing/do若表示動(dòng)作完成用do 未完成用doing這里已完成

熱心網(wǎng)友

felt是感官動(dòng)詞呀，只能接動(dòng)詞原形呀

熱心網(wǎng)友

fell do

熱心網(wǎng)友

fell doing吧。