must operate
Verbo regular: operate - operated- operated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must operate
you must operate
he must operate
we must operate
you must operate
they must operate 	I must be operating
you must be operating
he must be operating
we must be operating
you must be operating
they must be operating	I must have operated
you must have operated
he must have operated
we must have operated
you must have operated
they must have operated	I must have been operating
you must have been operating
he must have been operating
we must have been operating
you must have been operating
they must have been operating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't operate
you mustn't operate
he mustn't operate
we mustn't operate
you mustn't operate
they mustn't operate 	I mustn't be operating
you mustn't be operating
he mustn't be operating
we mustn't be operating
you mustn't be operating
they mustn't be operating	I mustn't have operated
you mustn't have operated
he mustn't have operated
we mustn't have operated
you mustn't have operated
they mustn't have operated	I mustn't have been operating
you mustn't have been operating
he mustn't have been operating
we mustn't have been operating
you mustn't have been operating
they mustn't have been operating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I operate?
must you operate?
must he operate?
must we operate?
must you operate?
must they operate? 	must I be operating?
must you be operating?
must he be operating?
must we be operating?
must you be operating?
must they be operating? 	must I have operated?
must you have operated?
must he have operated?
must we have operated?
must you have operated?
must they have operated? 	must I have been operating?
must you have been operating?
must he have been operating?
must we have been operating?
must you have been operating?
must they have been operating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I operate?
mustn't you operate?
mustn't he operate?
mustn't we operate?
mustn't you operate?
mustn't they operate? 	mustn't I be operating?
mustn't you be operating?
mustn't he be operating?
mustn't we be operating?
mustn't you be operating?
mustn't they be operating? 	mustn't I have operated?
mustn't you have operated?
mustn't he have operated?
mustn't we have operated?
mustn't you have operated?
mustn't they have operated? 	mustn't I have been operating?
mustn't you have been operating?
mustn't he have been operating?
mustn't we have been operating?
mustn't you have been operating?
mustn't they have been operating?