GRAMMAR BANK
UNIT 5. GRAMMAR B
THE PASSIVE WITH MODALS
The Passive with Modais
Modal verbs in English can be used in passive forms. As with other passive constructions, the emphasis changes to the object that receives the action.
Modais in passive forms don't change. The sentence starts with the modal, then the verb "be" and the past participle are added.
HOW TO FORM

SUBJECT | MODAL VERB | BE | PAST PARTICIPLE | BY
This lesson | should | be | studied | by most students.
These lessons | must | be | studied | by most students.
This lesson | can | be | studied | by most students.
These lessons | shouldn't | be | studied | by most students.
This lesson | can't | be | studied | by most students.
These lessons | must not | be | studied | by most students.

More examples:
The book can be read by the students before the exam.
The door mustn't be closed by anyone without a warning.
Should the package be delivered to your office or house?
The door can't be opened with this key.