没问题,by the time表示在.之前,前面用过去时,后面用过去完成时,如一个句子:
by the time our teacher came in ,we had started speaking English.
在老师进来前,我们都已经开始讲英语了.
没问题,by the time表示在.之前,前面用过去时,后面用过去完成时,如一个句子:
by the time our teacher came in ,we had started speaking English.
在老师进来前,我们都已经开始讲英语了.