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