must curtsy
Verbo regular: curtsy - curtsied- curtsied

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must curtsy
you must curtsy
he must curtsy
we must curtsy
you must curtsy
they must curtsy 	I must be curtsying
you must be curtsying
he must be curtsying
we must be curtsying
you must be curtsying
they must be curtsying	I must have curtsied
you must have curtsied
he must have curtsied
we must have curtsied
you must have curtsied
they must have curtsied	I must have been curtsying
you must have been curtsying
he must have been curtsying
we must have been curtsying
you must have been curtsying
they must have been curtsying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not curtsy
you must not curtsy
he must not curtsy
we must not curtsy
you must not curtsy
they must not curtsy 	I must not be curtsying
you must not be curtsying
he must not be curtsying
we must not be curtsying
you must not be curtsying
they must not be curtsying	I must not have curtsied
you must not have curtsied
he must not have curtsied
we must not have curtsied
you must not have curtsied
they must not have curtsied	I must not have been curtsying
you must not have been curtsying
he must not have been curtsying
we must not have been curtsying
you must not have been curtsying
they must not have been curtsying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I curtsy?
must you curtsy?
must he curtsy?
must we curtsy?
must you curtsy?
must they curtsy? 	must I be curtsying?
must you be curtsying?
must he be curtsying?
must we be curtsying?
must you be curtsying?
must they be curtsying? 	must I have curtsied?
must you have curtsied?
must he have curtsied?
must we have curtsied?
must you have curtsied?
must they have curtsied? 	must I have been curtsying?
must you have been curtsying?
must he have been curtsying?
must we have been curtsying?
must you have been curtsying?
must they have been curtsying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not curtsy?
must you not curtsy?
must he not curtsy?
must we not curtsy?
must you not curtsy?
must they not curtsy? 	must I not be curtsying?
must you not be curtsying?
must he not be curtsying?
must we not be curtsying?
must you not be curtsying?
must they not be curtsying? 	must I not have curtsied?
must you not have curtsied?
must he not have curtsied?
must we not have curtsied?
must you not have curtsied?
must they not have curtsied? 	must I not have been curtsying?
must you not have been curtsying?
must he not have been curtsying?
must we not have been curtsying?
must you not have been curtsying?
must they not have been curtsying?