can gain
Verbo regular: gain - gained- gained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can gain
you can gain
he can gain
we can gain
you can gain
they can gain 	I can be gaining
you can be gaining
he can be gaining
we can be gaining
you can be gaining
they can be gaining	I can have gained
you can have gained
he can have gained
we can have gained
you can have gained
they can have gained	I can have been gaining
you can have been gaining
he can have been gaining
we can have been gaining
you can have been gaining
they can have been gaining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot gain
you cannot gain
he cannot gain
we cannot gain
you cannot gain
they cannot gain 	I cannot be gaining
you cannot be gaining
he cannot be gaining
we cannot be gaining
you cannot be gaining
they cannot be gaining	I cannot have gained
you cannot have gained
he cannot have gained
we cannot have gained
you cannot have gained
they cannot have gained	I cannot have been gaining
you cannot have been gaining
he cannot have been gaining
we cannot have been gaining
you cannot have been gaining
they cannot have been gaining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I gain?
can you gain?
can he gain?
can we gain?
can you gain?
can they gain? 	can I be gaining?
can you be gaining?
can he be gaining?
can we be gaining?
can you be gaining?
can they be gaining? 	can I have gained?
can you have gained?
can he have gained?
can we have gained?
can you have gained?
can they have gained? 	can I have been gaining?
can you have been gaining?
can he have been gaining?
can we have been gaining?
can you have been gaining?
can they have been gaining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not gain?
can you not gain?
can he not gain?
can we not gain?
can you not gain?
can they not gain? 	can I not be gaining?
can you not be gaining?
can he not be gaining?
can we not be gaining?
can you not be gaining?
can they not be gaining? 	can I not have gained?
can you not have gained?
can he not have gained?
can we not have gained?
can you not have gained?
can they not have gained? 	can I not have been gaining?
can you not have been gaining?
can he not have been gaining?
can we not have been gaining?
can you not have been gaining?
can they not have been gaining?