By the time she knew the news ,John had flown to America.
By the time I got up,she had gone away.
很简单,by the time 接过去式,后用过去完成时.
By the time she knew the news ,John had flown to America.
By the time I got up,she had gone away.
很简单,by the time 接过去式,后用过去完成时.