come down 掉落，下来，患病

come down 具有多种含义，最基本的就是从上方掉落到下方。会话中多用作“教训某人”。另外，come down with 则表示“患上”感冒等疾病。

例句：

Did you come down here to tell me that?

你是专程下来告诉我那件事的？

If you don't come down, I'm coming up.

如果你不下来，我就上去。

He's coming down with a really bad cold.

他得了严重的流感。

对话：

A: I need to go to the third floor of the library.

我得去图书馆三层。

B: We'll go for lunch when you come down.

等你下来，我们再去吃午饭。