English verb conjugation
MUST WATCH

Regular verb: watch - watched - watched

Affirmation

Simple form	V-ing form
I must watch you must watch he must watch we must watch you must watch they must watch	I must be watching you must be watching he must be watching we must be watching you must be watching they must be watching
Perfect	V-ing perfect
I must have watched you must have watched he must have watched we must have watched you must have watched they must have watched	I must have been watching you must have been watching he must have been watching we must have been watching you must have been watching they must have been watching

Negation

Simple form	V-ing form
I mustn't watch you mustn't watch he mustn't watch we mustn't watch you mustn't watch they mustn't watch	I mustn't be watching you mustn't be watching he mustn't be watching we mustn't be watching you mustn't be watching they mustn't be watching
Perfect	V-ing perfect
I mustn't have watched you mustn't have watched he mustn't have watched we mustn't have watched you mustn't have watched they mustn't have watched	I mustn't have been watching you mustn't have been watching he mustn't have been watching we mustn't have been watching you mustn't have been watching they mustn't have been watching

Interrogative form

Simple form	V-ing form
must I watch? must you watch? must he watch? must we watch? must you watch? must they watch?	must I be watching? must you be watching? must he be watching? must we be watching? must you be watching? must they be watching?
Perfect	V-ing perfect
must I have watched? must you have watched? must he have watched? must we have watched? must you have watched? must they have watched?	must I have been watching? must you have been watching? must he have been watching? must we have been watching? must you have been watching? must they have been watching?

Interro-negative form

Simple form	V-ing form
mustn't I watch? mustn't you watch? mustn't he watch? mustn't we watch? mustn't you watch? mustn't they watch?	mustn't I be watching? mustn't you be watching? mustn't he be watching? mustn't we be watching? mustn't you be watching? mustn't they be watching?
Perfect	V-ing perfect
mustn't I have watched? mustn't you have watched? mustn't he have watched? mustn't we have watched? mustn't you have watched? mustn't they have watched?	mustn't I have been watching? mustn't you have been watching? mustn't he have been watching? mustn't we have been watching? mustn't you have been watching? mustn't they have been watching?