The book has been read by all the students here.
I have been excited during the trip.
The thief has been caught.
The dogs have been treated badly.
His homework has already been done.
This book has been translated into many languages. .
His bikes have been sold out.
Our classroom has been cleaned,you needn't clean it now.
These flowers have been watered,you can go home.
His bike has been stolen
Not a book in the library has been taken away
My watch has been repaired
Enough has been said here on this question.
Has this bridge been finished?
His homework hasn’t been finished.
The blackboard has been cleaned,hasn’t it?
They have asked him some questions.（他们问了他一些问题）
He has been asked some questions.（他被问了一些问题）
：He has eaten the cake.（他把蛋糕吃了）
The cake has been eaten by him.（蛋糕被他吃了）
Someone has set fire to the house.（有人曾放火烧了那房子）
The house has been set fire to.（ 那房子已被人放火烧了）
：We haven't heard from her since then.（从那时候起,我们就没收到过她的来信）
：She hasn't been heard from since then.
不懂继续追问,