can background
Verbo regular: background - backgrounded- backgrounded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can background
you can background
she can background
we can background
you can background
they can background 	I can be backgrounding
you can be backgrounding
she can be backgrounding
we can be backgrounding
you can be backgrounding
they can be backgrounding	I can have backgrounded
you can have backgrounded
she can have backgrounded
we can have backgrounded
you can have backgrounded
they can have backgrounded	I can have been backgrounding
you can have been backgrounding
she can have been backgrounding
we can have been backgrounding
you can have been backgrounding
they can have been backgrounding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot background
you cannot background
she cannot background
we cannot background
you cannot background
they cannot background 	I cannot be backgrounding
you cannot be backgrounding
she cannot be backgrounding
we cannot be backgrounding
you cannot be backgrounding
they cannot be backgrounding	I cannot have backgrounded
you cannot have backgrounded
she cannot have backgrounded
we cannot have backgrounded
you cannot have backgrounded
they cannot have backgrounded	I cannot have been backgrounding
you cannot have been backgrounding
she cannot have been backgrounding
we cannot have been backgrounding
you cannot have been backgrounding
they cannot have been backgrounding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I background?
can you background?
can she background?
can we background?
can you background?
can they background? 	can I be backgrounding?
can you be backgrounding?
can she be backgrounding?
can we be backgrounding?
can you be backgrounding?
can they be backgrounding? 	can I have backgrounded?
can you have backgrounded?
can she have backgrounded?
can we have backgrounded?
can you have backgrounded?
can they have backgrounded? 	can I have been backgrounding?
can you have been backgrounding?
can she have been backgrounding?
can we have been backgrounding?
can you have been backgrounding?
can they have been backgrounding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not background?
can you not background?
can she not background?
can we not background?
can you not background?
can they not background? 	can I not be backgrounding?
can you not be backgrounding?
can she not be backgrounding?
can we not be backgrounding?
can you not be backgrounding?
can they not be backgrounding? 	can I not have backgrounded?
can you not have backgrounded?
can she not have backgrounded?
can we not have backgrounded?
can you not have backgrounded?
can they not have backgrounded? 	can I not have been backgrounding?
can you not have been backgrounding?
can she not have been backgrounding?
can we not have been backgrounding?
can you not have been backgrounding?
can they not have been backgrounding?