今天试着翻了一句关代的句子
发现可以有三种组合
但我不太确定 正确与否?
一、I have a necklace which my friend bought for me.
二、I have a necklace which my friend bought me.
三、I have a necklace which was bought for me by my friend.

1跟2文法上都是正确的，而且意思没什么不一样。3虽然...看起来怪怪的，但文法也什么问题。这里最自然唸起来也最好的选项我会说是1