must celebrate
Verbo regular: celebrate - celebrated- celebrated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must celebrate
you must celebrate
he must celebrate
we must celebrate
you must celebrate
they must celebrate 	I must be celebrating
you must be celebrating
he must be celebrating
we must be celebrating
you must be celebrating
they must be celebrating	I must have celebrated
you must have celebrated
he must have celebrated
we must have celebrated
you must have celebrated
they must have celebrated	I must have been celebrating
you must have been celebrating
he must have been celebrating
we must have been celebrating
you must have been celebrating
they must have been celebrating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not celebrate
you must not celebrate
he must not celebrate
we must not celebrate
you must not celebrate
they must not celebrate 	I must not be celebrating
you must not be celebrating
he must not be celebrating
we must not be celebrating
you must not be celebrating
they must not be celebrating	I must not have celebrated
you must not have celebrated
he must not have celebrated
we must not have celebrated
you must not have celebrated
they must not have celebrated	I must not have been celebrating
you must not have been celebrating
he must not have been celebrating
we must not have been celebrating
you must not have been celebrating
they must not have been celebrating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I celebrate?
must you celebrate?
must he celebrate?
must we celebrate?
must you celebrate?
must they celebrate? 	must I be celebrating?
must you be celebrating?
must he be celebrating?
must we be celebrating?
must you be celebrating?
must they be celebrating? 	must I have celebrated?
must you have celebrated?
must he have celebrated?
must we have celebrated?
must you have celebrated?
must they have celebrated? 	must I have been celebrating?
must you have been celebrating?
must he have been celebrating?
must we have been celebrating?
must you have been celebrating?
must they have been celebrating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not celebrate?
must you not celebrate?
must he not celebrate?
must we not celebrate?
must you not celebrate?
must they not celebrate? 	must I not be celebrating?
must you not be celebrating?
must he not be celebrating?
must we not be celebrating?
must you not be celebrating?
must they not be celebrating? 	must I not have celebrated?
must you not have celebrated?
must he not have celebrated?
must we not have celebrated?
must you not have celebrated?
must they not have celebrated? 	must I not have been celebrating?
must you not have been celebrating?
must he not have been celebrating?
must we not have been celebrating?
must you not have been celebrating?
must they not have been celebrating?