When I came across him in your room,当我撞见他在你房里

come across:碰到；遇到；无意中发现

We've just come across an old friend.

我们刚碰到了一位老朋友。

Perhaps I shall come across him in France.

也许我会在法国遇见他。

相关短语:

come across one's mind忽然想起

A very good idea came across his mind.

他的脑海里出现一个好主意。

So later, he went to drop Mike off at a friend's.后来，他送迈克去朋友家

drop off:让...下车；把…留下

I'll drop off at the corner of Zhongshan Street.

我在中山路拐角处下车。

Could you drop off the books at the library?

你能把这些书顺便还给图书馆吗?

相关短语：

drop by顺便来访

Would you drop by when you are in town?

你来城里就来玩好吗?

drop out退出

She has dropped out in the middle of the race.

她中途退出比赛。