By the time+将来完成时怎么造句

By the time+将来完成时怎么造句 将来完成时+by the time+一般现在是 结构 造个句子!还有过去完成时+by the Time+一般过去式, by the time 将来完成时的例句,急～例句!谢了 帮我用by the time 造两句句子主句+by the time +从句1.从句+过去,主句+过去完成2.从句+一般现在,主句+将来完成 by the time you get back,great changes will have taken place in this area这里为什么用到将来完成时 BY the time he retires,Professor Baker（will have taught）for almost forty years.为什么用将来完成 By this time of next Friday,I——to New York by the Korean AirlineA.will fly B.will be flying C.am flying D.will have flow答案为什么选B而不是D?为什么是将来进行时不是将来完成时?什么情况下用将来完成时,什么情况 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 end of+将来时间,谓语部分用将来完成时还是一般将来时?有什么区别吗? by the time一定用于完成时吗?为什么? by the time一定用于完成时吗? 用by the time和before造两个完成时的句子 by 到..为止 用于什么时态?（怎么有的说是将来完成时,有的说是过去完成时?） He will have learned English for eight years by the time he ______from the university next yearA.Will graduateB.graduates为什么答案是B呢,前面不是将来完成时吗,对应的不应该是将来时吗? We___our breakfast when an old man came to the door. A. just have had B. have just had C. just had D.had just had by the time不是用将来完成时? by the time怎么使用的?不应该和完成时连用吗?还是说相当于when? 有没有英语语法高手啊,帮我看一句关于将来完成时的英语句子,分析下后半句.He will have learnt English for eight years by the time he graduates from the university next year.前面的我懂,will have done 是将来完成时 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?