By the time she left school ,she ___ that course for ten years.A.taught B.has taught C.had taught D.will have taught 为什么不是用将来完成时?

by the time she got to by the time she got up 翻译By the time he comes,I'll have left.( By the time he came,I had left.) she inquired what time the bus left对吗 by the time引导的时间状语从句和when引导的时间状语从句有区别吗eg.:By the time I got outside the bus had already left.When she got to school,she realized she had realized she had left her backpack at home. By the time she left school ,she ___ that course for ten years.A.taught B.has taught C.had taught D.will have taughtby the time不是用将来完成时? By the time i got to the but station the bus )括号内选哪个 A.left B.has left C.have left D.had left by the time the war____ (break) out ,most of the people had left by the time she went outside什么意思 动词填空：She ( ) by the time he got back.(go ) There was little time left.She went to the bus sThere was little time left.She went to the bus stop in a hurry.(保持原意)There was little time left.She ____ _____the bus stop. by the time i got there ,the bus had left.为什么后半句要用现在完成时? By the time I got outside,the bus had already left 这是什么时态啊 by the time I got outside, the bus had already left是什么句是不是过去式 outside,bus,the,already,time,I,left,the,by,got,had 初中英语怎么判断主句从句 比如 Tom had left by the time arrived at the airport By the time she left school ,she ___ that course for ten years.A.taught B.has taught C.had taught D.will have taught 为什么不是用将来完成时? ( by ) the time I got to the bus stop .the bus had already left.为什么要用by?