让口语活起来的地道美语

1. You do the math.

你自已算算看吧.

A:How long have you been waiting at the airport?"

你在机场等多久了?

B:I came here at 9 am, and now it's 3 pm. You do the math."

我早上九点就来了,而现在已经是下午三点了,你自己算算看有多久吧!