I must betroth you must betroth he must betroth we must betroth you must betroth they must betroth
V-ing form
I must be betrothing you must be betrothing he must be betrothing we must be betrothing you must be betrothing they must be betrothing
Perfect
I must have betrothed you must have betrothed he must have betrothed we must have betrothed you must have betrothed they must have betrothed
V-ing perfect
I must have been betrothing you must have been betrothing he must have been betrothing we must have been betrothing you must have been betrothing they must have been betrothing
Negation
Simple form
I mustn't betroth you mustn't betroth he mustn't betroth we mustn't betroth you mustn't betroth they mustn't betroth
V-ing form
I mustn't be betrothing you mustn't be betrothing he mustn't be betrothing we mustn't be betrothing you mustn't be betrothing they mustn't be betrothing
Perfect
I mustn't have betrothed you mustn't have betrothed he mustn't have betrothed we mustn't have betrothed you mustn't have betrothed they mustn't have betrothed
V-ing perfect
I mustn't have been betrothing you mustn't have been betrothing he mustn't have been betrothing we mustn't have been betrothing you mustn't have been betrothing they mustn't have been betrothing
Interrogative form
Simple form
must I betroth? must you betroth? must he betroth? must we betroth? must you betroth? must they betroth?
V-ing form
must I be betrothing? must you be betrothing? must he be betrothing? must we be betrothing? must you be betrothing? must they be betrothing?
Perfect
must I have betrothed? must you have betrothed? must he have betrothed? must we have betrothed? must you have betrothed? must they have betrothed?
V-ing perfect
must I have been betrothing? must you have been betrothing? must he have been betrothing? must we have been betrothing? must you have been betrothing? must they have been betrothing?
Interro-negative form
Simple form
mustn't I betroth? mustn't you betroth? mustn't he betroth? mustn't we betroth? mustn't you betroth? mustn't they betroth?
V-ing form
mustn't I be betrothing? mustn't you be betrothing? mustn't he be betrothing? mustn't we be betrothing? mustn't you be betrothing? mustn't they be betrothing?
Perfect
mustn't I have betrothed? mustn't you have betrothed? mustn't he have betrothed? mustn't we have betrothed? mustn't you have betrothed? mustn't they have betrothed?
V-ing perfect
mustn't I have been betrothing? mustn't you have been betrothing? mustn't he have been betrothing? mustn't we have been betrothing? mustn't you have been betrothing? mustn't they have been betrothing?