例句：
The present perfect is covered in Unit 8.
現在完成時在第8單元講解。
Guy wrenched his mind back to the present.
蓋伊的思緒猛地回到現在。
What can I get him for a birthday present?
我給他送點什么生日禮物呢？
What's the outline of the presentation?
演講的大綱是什么？
How do you structure your presentation?
你是如何組織你的演講的呢？
You can choose the format of your presentation.
你可以選擇你演講的形式。