有关被动语态的问题
His mother bought him a new coat.变被动1.He was bought a new coat by his mother.2.A new coat was bought for him by his mother.但是第一句He was bought a new coat by his mother.我有点看不懂,可以这么变吗?那请问是怎么翻译啊!请帮我分析下谢谢!