来自童胜勤的问题
"Youhavefoundyourlostumbrella,haven'tyou?""Yes,Ifounditbehindthedoorthismorning."为什么答语中"found"不用"havefound"?
"Youhavefoundyourlostumbrella,haven'tyou?""Yes,Ifounditbehindthedoorthismorning."
为什么答语中"found"不用"havefound"?
