I must ratify you must ratify she must ratify we must ratify you must ratify they must ratify
V-ing form
I must be ratifying you must be ratifying she must be ratifying we must be ratifying you must be ratifying they must be ratifying
Perfect
I must have ratified you must have ratified she must have ratified we must have ratified you must have ratified they must have ratified
V-ing perfect
I must have been ratifying you must have been ratifying she must have been ratifying we must have been ratifying you must have been ratifying they must have been ratifying
Negation
Simple form
I mustn't ratify you mustn't ratify she mustn't ratify we mustn't ratify you mustn't ratify they mustn't ratify
V-ing form
I mustn't be ratifying you mustn't be ratifying she mustn't be ratifying we mustn't be ratifying you mustn't be ratifying they mustn't be ratifying
Perfect
I mustn't have ratified you mustn't have ratified she mustn't have ratified we mustn't have ratified you mustn't have ratified they mustn't have ratified
V-ing perfect
I mustn't have been ratifying you mustn't have been ratifying she mustn't have been ratifying we mustn't have been ratifying you mustn't have been ratifying they mustn't have been ratifying
Interrogative form
Simple form
must I ratify? must you ratify? must she ratify? must we ratify? must you ratify? must they ratify?
V-ing form
must I be ratifying? must you be ratifying? must she be ratifying? must we be ratifying? must you be ratifying? must they be ratifying?
Perfect
must I have ratified? must you have ratified? must she have ratified? must we have ratified? must you have ratified? must they have ratified?
V-ing perfect
must I have been ratifying? must you have been ratifying? must she have been ratifying? must we have been ratifying? must you have been ratifying? must they have been ratifying?
Interro-negative form
Simple form
mustn't I ratify? mustn't you ratify? mustn't she ratify? mustn't we ratify? mustn't you ratify? mustn't they ratify?
V-ing form
mustn't I be ratifying? mustn't you be ratifying? mustn't she be ratifying? mustn't we be ratifying? mustn't you be ratifying? mustn't they be ratifying?
Perfect
mustn't I have ratified? mustn't you have ratified? mustn't she have ratified? mustn't we have ratified? mustn't you have ratified? mustn't they have ratified?
V-ing perfect
mustn't I have been ratifying? mustn't you have been ratifying? mustn't she have been ratifying? mustn't we have been ratifying? mustn't you have been ratifying? mustn't they have been ratifying?