I must hibernate you must hibernate he must hibernate we must hibernate you must hibernate they must hibernate
V-ing form
I must be hibernating you must be hibernating he must be hibernating we must be hibernating you must be hibernating they must be hibernating
Perfect
I must have hibernated you must have hibernated he must have hibernated we must have hibernated you must have hibernated they must have hibernated
V-ing perfect
I must have been hibernating you must have been hibernating he must have been hibernating we must have been hibernating you must have been hibernating they must have been hibernating
Negation
Simple form
I must not hibernate you must not hibernate he must not hibernate we must not hibernate you must not hibernate they must not hibernate
V-ing form
I must not be hibernating you must not be hibernating he must not be hibernating we must not be hibernating you must not be hibernating they must not be hibernating
Perfect
I must not have hibernated you must not have hibernated he must not have hibernated we must not have hibernated you must not have hibernated they must not have hibernated
V-ing perfect
I must not have been hibernating you must not have been hibernating he must not have been hibernating we must not have been hibernating you must not have been hibernating they must not have been hibernating
Interrogative form
Simple form
must I hibernate? must you hibernate? must he hibernate? must we hibernate? must you hibernate? must they hibernate?
V-ing form
must I be hibernating? must you be hibernating? must he be hibernating? must we be hibernating? must you be hibernating? must they be hibernating?
Perfect
must I have hibernated? must you have hibernated? must he have hibernated? must we have hibernated? must you have hibernated? must they have hibernated?
V-ing perfect
must I have been hibernating? must you have been hibernating? must he have been hibernating? must we have been hibernating? must you have been hibernating? must they have been hibernating?
Interro-negative form
Simple form
must I not hibernate? must you not hibernate? must he not hibernate? must we not hibernate? must you not hibernate? must they not hibernate?
V-ing form
must I not be hibernating? must you not be hibernating? must he not be hibernating? must we not be hibernating? must you not be hibernating? must they not be hibernating?
Perfect
must I not have hibernated? must you not have hibernated? must he not have hibernated? must we not have hibernated? must you not have hibernated? must they not have hibernated?
V-ing perfect
must I not have been hibernating? must you not have been hibernating? must he not have been hibernating? must we not have been hibernating? must you not have been hibernating? must they not have been hibernating?