什么是将来完成时？
将来完成时是英语中的一种时态，用来描述在将来某个时间点之前将会完成的动作或事件。它表示将来的某一时刻之前已经完成的动作。以下是一些例子，展示了将来完成时的用法：
- 将来的某一时刻之前已经完成的动作：
- By this time next week, I will have finished my project.（到下周的这个时候，我将已经完成我的项目。）
- By the end of the month, they will have traveled to three different countries.（到月底，他们将已经去过三个不同的国家。）
- 强调在将来某一时刻之前完成的状态：
- I will have lived in this city for ten years next month.（下个月，我将已经在这个城市住了十年。）
- She will have known him for a decade by the time they meet again.（到他们再次见面时，她将已经认识他十年了。）
- 未来的某个时间点之前完成的计划或意图：
- By the time you arrive, I will have prepared dinner.（在你到达之前，我将已经准备好晚饭了。）
- When he comes back, I will have read the entire book.（当他回来时，我将已经读完整本书。）
将来完成时用来表示将来的某一时刻之前已经完成的动作，强调动作在将来某一点的完成状态。
表示将来某时某动作已完成或某事情已发生。
* We’d better wait till 14 December. David will have had his exam by then， so he’ll be able to enjoy himself.
我们最好还是等到12月14日。到那时大卫就考完试了，这样他就能够玩得痛快。
* They will have been married for 20 years by then. 到那时他们就已经结婚满20年了。
* You will have reached Shanghai by this time tomorrow. 明天的这个时候你就会到达上海了。
* I hope her health will have improved greatly by the time we come back next year. 我希望下一年我们回来的时候可以看到她身体已经好转了。
* He is somebody now. He will not have remembered his old classmates. 他现在是个有身份的人了，他可能不会记得老同学了。
* Will you have known Kevin for 10 years next month? 到下个月你认识凯文该有10年了吧？
