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