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