can complain
Verbo regular: complain - complained- complained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can complain
you can complain
she can complain
we can complain
you can complain
they can complain 	I can be complaining
you can be complaining
she can be complaining
we can be complaining
you can be complaining
they can be complaining	I can have complained
you can have complained
she can have complained
we can have complained
you can have complained
they can have complained	I can have been complaining
you can have been complaining
she can have been complaining
we can have been complaining
you can have been complaining
they can have been complaining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot complain
you cannot complain
she cannot complain
we cannot complain
you cannot complain
they cannot complain 	I cannot be complaining
you cannot be complaining
she cannot be complaining
we cannot be complaining
you cannot be complaining
they cannot be complaining	I cannot have complained
you cannot have complained
she cannot have complained
we cannot have complained
you cannot have complained
they cannot have complained	I cannot have been complaining
you cannot have been complaining
she cannot have been complaining
we cannot have been complaining
you cannot have been complaining
they cannot have been complaining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I complain?
can you complain?
can she complain?
can we complain?
can you complain?
can they complain? 	can I be complaining?
can you be complaining?
can she be complaining?
can we be complaining?
can you be complaining?
can they be complaining? 	can I have complained?
can you have complained?
can she have complained?
can we have complained?
can you have complained?
can they have complained? 	can I have been complaining?
can you have been complaining?
can she have been complaining?
can we have been complaining?
can you have been complaining?
can they have been complaining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not complain?
can you not complain?
can she not complain?
can we not complain?
can you not complain?
can they not complain? 	can I not be complaining?
can you not be complaining?
can she not be complaining?
can we not be complaining?
can you not be complaining?
can they not be complaining? 	can I not have complained?
can you not have complained?
can she not have complained?
can we not have complained?
can you not have complained?
can they not have complained? 	can I not have been complaining?
can you not have been complaining?
can she not have been complaining?
can we not have been complaining?
can you not have been complaining?
can they not have been complaining?