can circulate
Verbo regular: circulate - circulated- circulated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can circulate
you can circulate
he can circulate
we can circulate
you can circulate
they can circulate 	I can be circulating
you can be circulating
he can be circulating
we can be circulating
you can be circulating
they can be circulating	I can have circulated
you can have circulated
he can have circulated
we can have circulated
you can have circulated
they can have circulated	I can have been circulating
you can have been circulating
he can have been circulating
we can have been circulating
you can have been circulating
they can have been circulating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot circulate
you cannot circulate
he cannot circulate
we cannot circulate
you cannot circulate
they cannot circulate 	I cannot be circulating
you cannot be circulating
he cannot be circulating
we cannot be circulating
you cannot be circulating
they cannot be circulating	I cannot have circulated
you cannot have circulated
he cannot have circulated
we cannot have circulated
you cannot have circulated
they cannot have circulated	I cannot have been circulating
you cannot have been circulating
he cannot have been circulating
we cannot have been circulating
you cannot have been circulating
they cannot have been circulating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I circulate?
can you circulate?
can he circulate?
can we circulate?
can you circulate?
can they circulate? 	can I be circulating?
can you be circulating?
can he be circulating?
can we be circulating?
can you be circulating?
can they be circulating? 	can I have circulated?
can you have circulated?
can he have circulated?
can we have circulated?
can you have circulated?
can they have circulated? 	can I have been circulating?
can you have been circulating?
can he have been circulating?
can we have been circulating?
can you have been circulating?
can they have been circulating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not circulate?
can you not circulate?
can he not circulate?
can we not circulate?
can you not circulate?
can they not circulate? 	can I not be circulating?
can you not be circulating?
can he not be circulating?
can we not be circulating?
can you not be circulating?
can they not be circulating? 	can I not have circulated?
can you not have circulated?
can he not have circulated?
can we not have circulated?
can you not have circulated?
can they not have circulated? 	can I not have been circulating?
can you not have been circulating?
can he not have been circulating?
can we not have been circulating?
can you not have been circulating?
can they not have been circulating?