can swallow
Verbo regular: swallow - swallowed- swallowed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can swallow
you can swallow
he can swallow
we can swallow
you can swallow
they can swallow 	I can be swallowing
you can be swallowing
he can be swallowing
we can be swallowing
you can be swallowing
they can be swallowing	I can have swallowed
you can have swallowed
he can have swallowed
we can have swallowed
you can have swallowed
they can have swallowed	I can have been swallowing
you can have been swallowing
he can have been swallowing
we can have been swallowing
you can have been swallowing
they can have been swallowing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot swallow
you cannot swallow
he cannot swallow
we cannot swallow
you cannot swallow
they cannot swallow 	I cannot be swallowing
you cannot be swallowing
he cannot be swallowing
we cannot be swallowing
you cannot be swallowing
they cannot be swallowing	I cannot have swallowed
you cannot have swallowed
he cannot have swallowed
we cannot have swallowed
you cannot have swallowed
they cannot have swallowed	I cannot have been swallowing
you cannot have been swallowing
he cannot have been swallowing
we cannot have been swallowing
you cannot have been swallowing
they cannot have been swallowing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I swallow?
can you swallow?
can he swallow?
can we swallow?
can you swallow?
can they swallow? 	can I be swallowing?
can you be swallowing?
can he be swallowing?
can we be swallowing?
can you be swallowing?
can they be swallowing? 	can I have swallowed?
can you have swallowed?
can he have swallowed?
can we have swallowed?
can you have swallowed?
can they have swallowed? 	can I have been swallowing?
can you have been swallowing?
can he have been swallowing?
can we have been swallowing?
can you have been swallowing?
can they have been swallowing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not swallow?
can you not swallow?
can he not swallow?
can we not swallow?
can you not swallow?
can they not swallow? 	can I not be swallowing?
can you not be swallowing?
can he not be swallowing?
can we not be swallowing?
can you not be swallowing?
can they not be swallowing? 	can I not have swallowed?
can you not have swallowed?
can he not have swallowed?
can we not have swallowed?
can you not have swallowed?
can they not have swallowed? 	can I not have been swallowing?
can you not have been swallowing?
can he not have been swallowing?
can we not have been swallowing?
can you not have been swallowing?
can they not have been swallowing?