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