tap (v.)
轻拍、轻敲   

例句：
She tapped the door with her knuckles.
 她用指节轻轻叩门。

hitch-hike
免费搭别人的车、搭顺风车

例句：
He arrived at the town by hitch-hiking.
他是搭乘他人的便车到城里的。

Have you finished yet?
你做完了吗？

对话：
A: Jack, are you still repairing the pipe in the bathroom?
B: Yes. It's leaking.
A: Have you finished yet? Dinner is ready.
B: I'll have it ready very soon.

A：Jack，你还在修卫生间里的水管吗？
B：是的。水管漏水。
A：你修好了吗？晚饭准备好了。
B：我马上就修好了。