✔ 最佳答案
(1) How did you buy the car?
==> 你是怎麼購買此車?
That means, you have already bought the car. I ask the question as I want to know the way 方式 that you used to buy the car.
The answer could be:
- I bought the car directly from the wholesaler.
- I bought the car under the hire and purchase scheme.
(2) How did you come to buy the car?
==> 你怎麼會(想)買這輛車?
come to do something : used in questions to talk about how or why something happened (Oxford dictionary)
"come" 與 "how" 連用, 構成問句 = (怎麼)會的...? (Yahoo dictionary)
You may or may not have already bought the car. I ask the question as I want to know the factor and the reason 因素及原因 that led you to the thought of buying the car.
The answer could be:
(1) I've decided to buy it because it has been my dream car.
(2) I bought it as I thought the price was good.
哪種說法比較自然?
I think it is more natural and common to ask the second question than the first one, as it is more specific (明確/具體) as a question.