can pack
Verbo regular: pack - packed- packed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can pack
you can pack
he can pack
we can pack
you can pack
they can pack 	I can be packing
you can be packing
he can be packing
we can be packing
you can be packing
they can be packing	I can have packed
you can have packed
he can have packed
we can have packed
you can have packed
they can have packed	I can have been packing
you can have been packing
he can have been packing
we can have been packing
you can have been packing
they can have been packing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot pack
you cannot pack
he cannot pack
we cannot pack
you cannot pack
they cannot pack 	I cannot be packing
you cannot be packing
he cannot be packing
we cannot be packing
you cannot be packing
they cannot be packing	I cannot have packed
you cannot have packed
he cannot have packed
we cannot have packed
you cannot have packed
they cannot have packed	I cannot have been packing
you cannot have been packing
he cannot have been packing
we cannot have been packing
you cannot have been packing
they cannot have been packing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I pack?
can you pack?
can he pack?
can we pack?
can you pack?
can they pack? 	can I be packing?
can you be packing?
can he be packing?
can we be packing?
can you be packing?
can they be packing? 	can I have packed?
can you have packed?
can he have packed?
can we have packed?
can you have packed?
can they have packed? 	can I have been packing?
can you have been packing?
can he have been packing?
can we have been packing?
can you have been packing?
can they have been packing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not pack?
can you not pack?
can he not pack?
can we not pack?
can you not pack?
can they not pack? 	can I not be packing?
can you not be packing?
can he not be packing?
can we not be packing?
can you not be packing?
can they not be packing? 	can I not have packed?
can you not have packed?
can he not have packed?
can we not have packed?
can you not have packed?
can they not have packed? 	can I not have been packing?
can you not have been packing?
can he not have been packing?
can we not have been packing?
can you not have been packing?
can they not have been packing?