2017考研英语语法小讲：将来完成时

shall/will + have + 过去分词

用法：将来完成时动词主要表示在将来的某一时刻或将来的某一时刻之前完成的动作，这一动作也可能继续进行。例如：

By seven o’clock this afternoon we shall have got to Shanghai if the train keeps good line. 如果火车运行正常，我们今天下午七点就到上海了。

Before bedtime Xiao Ming will have completed his work. 到上床睡觉的时候，小明会做完他的工作(或作业)。

By February next year this foreign expert will have been here on this job for five years. 到明年二月，这个外国专家在这儿做这项工作就满五年了。

By Sept. 2008 Beijing will have held/hosted the Olympic Games.  到2008年9月，北京将举行完了奥运会。