请问:He____(be) the president for three years next May.用将来进行时应该怎么填空?

问题描述:

请问:He____(be) the president for three years next May.用将来进行时应该怎么填空?

填 will have been将来完成时用来表示在将来某一时间以前已经完成或一直持续的动作.经常与before+将来时间或by+将来时间连用,也可与before或by the time引导的现在时的从句连用. 1) 构成will / be going to do sth. ...