一道很难解释的高三英语难题!
--HaveyougraduatedfromCollege
---Yes,_____.
A.IstudiedFrenchfortwoyears.
B.IhadstudiedFrenchfortwoyears.
为何不能选B.我可以这么理解呀,
IhadstudiedFrenchfortwoyearsbeforeIgraducatedfromcollege.
为何错呢?具体些.最好能举些例子?