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