He sent me a card.改为被动语态 I was sent a card by him.为什么是错的?

问题描述:

He sent me a card.改为被动语态 I was sent a card by him.为什么是错的?

如果改成被动,应该是card做主语
A card was sent to me by him.
)可是双宾结构不是有两种改法吗?语法上是由两种的话说。不过有些你改的话就不对了,比如你上面那个 I was sent a card by him这句语法上显然没有错误,不过意思上就有问题了。我被他送了一张贺卡。(你觉得这合适么)“我被他送了一张贺卡”其实我觉得读的通耶。那么He showed me a card.改为被动语态 I was showed a card by him.为什么又是对的呢?问了几个老师,都说没有这样的区别其实,我晕了,学英语不是这样的吧,能累死人的话说。。。。