为你解答.
1、Why didn't you invite me to your wedding party?
Why wasn't I invited by you to your wedding party?

2、The worker asked me not to touch the machine.
I was asked not to touch the machine by the worker.
3、He said that he would take good care of my brother.
It was said by him that my brother would be taken good care of by him.
4、Mary's parents will give her a watch on her birthday.
Mary will be given a watch by her parents on her birthday.
5、We will talk about this problem tomorrow morning.
This problem will be talked about by us tomorrow morning.
6、They will hold the basketball match on Friday afternoon.
The basketball match will be held by them on Friday afternoon.