had left=had been away from.为什么要加from?

had left=had been away from.为什么要加from? had been away和had left这两句有什么区别吗 had been Everything he_____away from him before he left there.A.had been taken B.had had been taken what had been done had been done. When Jack arrived he learned Mary __________ for almost an hour.A.had gone B.had set off C.had left D.had been away twenty trees had been planted by the time we left为什么要用had been planted 这个时态而不是had planted When he got to the station, the train _________ for a long time.A. had been away B. had left C. has been away D. has left When he arrived at the bus stop,the bus_____for 20 minutes. A,has left B,had left C,has been awayD,had been away. When Kate arrived at the bus stop,the bus for half an hour.a.has left b.had left c.has been away d.had been away Bettly ( ) home for several days,which made her parents very worriedA.has left B.had been away from C.has been away from D.had left When I got to his home ,he ——for an hour .A .had left B.left C.had been away D.has been away where had she been? had been什么时态 英语翻译had been reading George Eskridge,a lawyer in whose charge Washington’s mother had been left when she was orphaned特别是这一句 a lawyer in whose charge Washington’s mother had been left 请清楚解释,Washington’s mother had been had left和leave区分 I not once had left