问答题 My father bought me a new bike.
【正确答案】A new bike was bought for me by my father.
【答案解析】[解析] 动词buy后接了双宾语，改为被动语态时，直接宾语(物)即a new bike作主语，那么动词后要用介词，这个介词是由与其搭配的动词决定，故使用for。