题目

请教各位老师几个英语问题 谢谢
1 By the end of this year he_____(teach) gor thirty years.
2 By this time next year, we_____(do ) business with each other for 10 years.
请问这两道题如果填将来完成时算对么 , 还是必须填将来完成进行时呢. 谢谢

提问时间：2020-07-24

答案

应该是将来完成进行时,表示动作一直发生.比如,过去30年一直教书,或者过去十年一直有生意往来.
将来完成时,表示到那个时候,动作完成,没有表示过去一直发生的意思.
1 By the end of this year he 【will have been teaching】 for thirty years.
2 By this time next year, we 【will have been doing】 business with each other for 10 years.