must pay
Verbo irregular: pay - paid- paid

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must pay
you must pay
she must pay
we must pay
you must pay
they must pay 	I must be paying
you must be paying
she must be paying
we must be paying
you must be paying
they must be paying	I must have paid
you must have paid
she must have paid
we must have paid
you must have paid
they must have paid	I must have been paying
you must have been paying
she must have been paying
we must have been paying
you must have been paying
they must have been paying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not pay
you must not pay
she must not pay
we must not pay
you must not pay
they must not pay 	I must not be paying
you must not be paying
she must not be paying
we must not be paying
you must not be paying
they must not be paying	I must not have paid
you must not have paid
she must not have paid
we must not have paid
you must not have paid
they must not have paid	I must not have been paying
you must not have been paying
she must not have been paying
we must not have been paying
you must not have been paying
they must not have been paying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I pay?
must you pay?
must she pay?
must we pay?
must you pay?
must they pay? 	must I be paying?
must you be paying?
must she be paying?
must we be paying?
must you be paying?
must they be paying? 	must I have paid?
must you have paid?
must she have paid?
must we have paid?
must you have paid?
must they have paid? 	must I have been paying?
must you have been paying?
must she have been paying?
must we have been paying?
must you have been paying?
must they have been paying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not pay?
must you not pay?
must she not pay?
must we not pay?
must you not pay?
must they not pay? 	must I not be paying?
must you not be paying?
must she not be paying?
must we not be paying?
must you not be paying?
must they not be paying? 	must I not have paid?
must you not have paid?
must she not have paid?
must we not have paid?
must you not have paid?
must they not have paid? 	must I not have been paying?
must you not have been paying?
must she not have been paying?
must we not have been paying?
must you not have been paying?
must they not have been paying?