finish doing sth是什么时态

　　If you finish doing your work, you can do what you like.

　　如果你做完你的工作，你可以做你喜欢的事。

　　Every time after I finish doing Taijiquan, I feel like a new person.

　　每次我打完太极拳，都感觉像换了一个人似的。

　　You can't go out and play before you finish doing your homework.

　　写完作业之前，你不可以出去玩。

　　It will be weeks before they finish doing their homework.

　　要过好几周他们才能完成家庭作业。

　　When you finish doing the crossword, the solution is on the back page.

　　在你完成填字游戏后，答案就在反面。