can forewarn
Verbo regular: forewarn - forewarned- forewarned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can forewarn
you can forewarn
he can forewarn
we can forewarn
you can forewarn
they can forewarn 	I can be forewarning
you can be forewarning
he can be forewarning
we can be forewarning
you can be forewarning
they can be forewarning	I can have forewarned
you can have forewarned
he can have forewarned
we can have forewarned
you can have forewarned
they can have forewarned	I can have been forewarning
you can have been forewarning
he can have been forewarning
we can have been forewarning
you can have been forewarning
they can have been forewarning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot forewarn
you cannot forewarn
he cannot forewarn
we cannot forewarn
you cannot forewarn
they cannot forewarn 	I cannot be forewarning
you cannot be forewarning
he cannot be forewarning
we cannot be forewarning
you cannot be forewarning
they cannot be forewarning	I cannot have forewarned
you cannot have forewarned
he cannot have forewarned
we cannot have forewarned
you cannot have forewarned
they cannot have forewarned	I cannot have been forewarning
you cannot have been forewarning
he cannot have been forewarning
we cannot have been forewarning
you cannot have been forewarning
they cannot have been forewarning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I forewarn?
can you forewarn?
can he forewarn?
can we forewarn?
can you forewarn?
can they forewarn? 	can I be forewarning?
can you be forewarning?
can he be forewarning?
can we be forewarning?
can you be forewarning?
can they be forewarning? 	can I have forewarned?
can you have forewarned?
can he have forewarned?
can we have forewarned?
can you have forewarned?
can they have forewarned? 	can I have been forewarning?
can you have been forewarning?
can he have been forewarning?
can we have been forewarning?
can you have been forewarning?
can they have been forewarning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not forewarn?
can you not forewarn?
can he not forewarn?
can we not forewarn?
can you not forewarn?
can they not forewarn? 	can I not be forewarning?
can you not be forewarning?
can he not be forewarning?
can we not be forewarning?
can you not be forewarning?
can they not be forewarning? 	can I not have forewarned?
can you not have forewarned?
can he not have forewarned?
can we not have forewarned?
can you not have forewarned?
can they not have forewarned? 	can I not have been forewarning?
can you not have been forewarning?
can he not have been forewarning?
can we not have been forewarning?
can you not have been forewarning?
can they not have been forewarning?