by the time....是「到....之時」, 就是一個線段: - by the time + 過去動作 : 主句用過去完成式
By the time I arrived, he had already gone.- by the time + 未來動作(通常以現在式代替未來式) : 主句用未來完成式
I'll be in bed by the time you get home.
Ms. Simons will have served for nearly 15 years by the time she retires.
西蒙斯女士退休時已經服務了將近15年。
(A) served 已服務
(B) will have served 將已服務
(C) serves 服務
(D) had served 曾服務
3.Ms. Simons_________ for nearly 15 year..-阿摩線上測驗