by the time you get back,great changes will have taken place

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/07/07 13:35:12

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

先翻译一下,等到你回来那时,这个地方将已经发生了大变化.首先句中的“you”还没回来,所以有一个将来时.然后变化是在“you”回来之前已经发生了,所以又有一个完成时.结合起来就是将来完成时.将来完成时表示在将来某一时间之前已经完成的动作.

by the time you get back,great changes will have taken place great changes have taken place over the past fifty years. great changes have taken place in the village ____the years "Great changes have taken place in China since the introduct Great changes have taken place in the country.Do not you see Great changes have taken place there. Great changes have taken place there Great changes have taken place since liberation Great changes have taken place ...in china Great changes have taken place in China. Great changes?the last three years.A.have taken place B.have 英语改被动Great changes have taken place in the city and we have