例句：
The present perfect is covered in Unit 8.
现在完成时在第8单元讲解。
Guy wrenched his mind back to the present.
盖伊的思绪猛地回到现在。
What can I get him for a birthday present?
我给他送点什么生日礼物呢？
What's the outline of the presentation?
演讲的大纲是什么？
How do you structure your presentation?
你是如何组织你的演讲的.呢？
You can choose the format of your presentation.
你可以选择你演讲的形式。
