今天我们一起学习英语基础语法中12种时态里的将来完成时。
将来完成时是一个相当容易理解和使用的时态，将来完成时讲述的是未来的过去。
The Future Perfect tense is quite an easy tense to understand and use. The Future Perfect talks about the past in the future.
我们该如何构造将来完成时呢？
将来完成时的结构如下：
请看这些将来完成时的栗子：
将来完成时的缩写（Contraction with Future Perfect）
在用将来完成时说话的时候，我们经常收缩主语和well，我们可能会把主语、well和have全部缩写在一起。
In speaking with the Future Perfect tense, we often contract the subject and will. Sometimes, we may contract the subject, will and have all together.
如下图：
Ill have finished when you arrive.
Shell have forgotten everything.
Theyllve had their dinner by then.
在否定句中，我们可以缩写成won’t或者won’t’ve ，请看下面栗子：
Anthony wont have arrived by then.
They wontve finished the car tomorrow.
我们该如何使用将来完成时呢？
将来完成时表示将来的动作先于将来的另一个动作。是指未来的过去。
The Future Perfect tense expresses action in the future before another action in the future. This is the past in the future.
举个栗子：
The train will leave the station at 9am.
You will arrive at the station at 9.15am.
When you arrive, the train will have left.
也就是说在未来发生的b事件前会发生的a事件（a.b都是在未来发生的事）
请看下面更多的栗子：
You can call me at work at 8am.
They will be tired when they arrive.
They will not have slept for a long time.
“Mary wont be at home when you arrive.”
“Really? Where will she have gone?”
有时你可以把将来完成时想象成现在完成时，但你的观点不是现在，而是未来。
You can sometimes think of the Future Perfect tense like the Present Perfect tense, but instead of your viewpoint being in the present, it is in the future.
今天分享到此为止，下一期将继续学习并分享更多关于英语时态的学习知识，
有兴趣的同学可关注本公众号共同学习成长
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