1.You would do well to consider all the options before buying.你购买之前最好对各种选择都考虑一下。

2.We buy our fruit and vegetables at the market.我们在市场上购买水果和蔬菜。

3. Now is a good time to buy a house.现在买房子正是时候。

4. We might buy it but then again we might not.我们可能买，不过也可能不买。

英语中buy的意思是购买。常见的固定搭配

给某人买某物buy somebody，something。或者buy something for somebody。

例如

我想为母亲的生日买一个可可的生日蛋糕。

I want to buy a delicious birthday cake for my mother.

你能帮我买本字典吗？ Can you help buy me a dictionary