题目内容：

When SARS passes,we Chinese should think what lessons we will have learned
为什么will和have learned同时用呢?它们明明一个是将来时,一个是完成时啊.

优质解答

将来完成时啊..
例如...
by the day u read this letter,i will have been killed..
到你看到这封信的时候,我已经被送去卖咸鸭蛋了