buy的過(guò)去式寫(xiě)法

　　I bought my car second-hand.

　　我買(mǎi)了一輛二手車(chē)。

　　He bought a new coat for me.

　　他給我買(mǎi)了一件新外套。

　　We stopped and bought some bread.

　　我們停下來(lái)買(mǎi)了一些面包。