I've got a problem with changing this sentence into passive :
We hope they will send us an invitation
Can I change it into personal construction?
They are hoped to send us an invitation.
We is a problem here. It isn't hoped in general by people. It is a quite specific personal hope because "We hope".
I know I can say:
We hope to be sent an invitation
We hope taht an invitation will be sent to us.
But what about the personal construction?