1. pay for sb. ：费钱给某人

e.g. If you pay for both of us now, we can settle up later.

你要是现在先付清咱们两人的帐，事后咱们俩再细算。

e.g. She locked horns with him over the subject of equal pay for women.

她在妇女同酬问题上跟他争得不可开交。

2. pay for sth. ：为……付款

e.g. If you want to get the book, you must pay for it in advance.

如果你要买这本书，你得先付款。

e.g. How much must I pay for the damage?

我该赔多少损失费？

4. think about：考虑，仔细想想

e.g. I should like to think about your suggestion before I give a definite reply.

我想先考虑一下你的建议, 然后给你一个明确的答复。

e.g. Elinor is thinking about emigrating to the United States.

埃莉诺正在考虑移居美国。