may retard
Verbo regular: retard - retarded- retarded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may retard
you may retard
he may retard
we may retard
you may retard
they may retard 	I may be retarding
you may be retarding
he may be retarding
we may be retarding
you may be retarding
they may be retarding	I may have retarded
you may have retarded
he may have retarded
we may have retarded
you may have retarded
they may have retarded	I may have been retarding
you may have been retarding
he may have been retarding
we may have been retarding
you may have been retarding
they may have been retarding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may not retard
you may not retard
he may not retard
we may not retard
you may not retard
they may not retard 	I may not be retarding
you may not be retarding
he may not be retarding
we may not be retarding
you may not be retarding
they may not be retarding	I may not have retarded
you may not have retarded
he may not have retarded
we may not have retarded
you may not have retarded
they may not have retarded	I may not have been retarding
you may not have been retarding
he may not have been retarding
we may not have been retarding
you may not have been retarding
they may not have been retarding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I retard?
may you retard?
may he retard?
may we retard?
may you retard?
may they retard? 	may I be retarding?
may you be retarding?
may he be retarding?
may we be retarding?
may you be retarding?
may they be retarding? 	may I have retarded?
may you have retarded?
may he have retarded?
may we have retarded?
may you have retarded?
may they have retarded? 	may I have been retarding?
may you have been retarding?
may he have been retarding?
may we have been retarding?
may you have been retarding?
may they have been retarding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I not retard?
may you not retard?
may he not retard?
may we not retard?
may you not retard?
may they not retard? 	may I not be retarding?
may you not be retarding?
may he not be retarding?
may we not be retarding?
may you not be retarding?
may they not be retarding? 	may I not have retarded?
may you not have retarded?
may he not have retarded?
may we not have retarded?
may you not have retarded?
may they not have retarded? 	may I not have been retarding?
may you not have been retarding?
may he not have been retarding?
may we not have been retarding?
may you not have been retarding?
may they not have been retarding?