改被动语态 some opeanas the window every day My grandfather bought chocolate for me many year ago

题目

改被动语态 some opeanas the window every day My grandfather bought chocolate for me many year ago
Li Ming has eaten lunch
We can repair the watch
someone has prepared a meal for you
someone must send a letter to him

答案

The window is opened by someone every day.
Chocolate was bought for me by my grandfather many years ago.或
I was bought chocolate by my grandfather many years ago.
Lunch has been eaten by li ming.
The watch can be repaired by us.
A meal has been prepared for you by someone.
A letter must be sent to him by someone.
在被动语态 中我们往往省略by和后面的部分,