can sip
Verbo regular: sip - sipped- sipped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can sip
you can sip
he can sip
we can sip
you can sip
they can sip 	I can be sipping
you can be sipping
he can be sipping
we can be sipping
you can be sipping
they can be sipping	I can have sipped
you can have sipped
he can have sipped
we can have sipped
you can have sipped
they can have sipped	I can have been sipping
you can have been sipping
he can have been sipping
we can have been sipping
you can have been sipping
they can have been sipping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot sip
you cannot sip
he cannot sip
we cannot sip
you cannot sip
they cannot sip 	I cannot be sipping
you cannot be sipping
he cannot be sipping
we cannot be sipping
you cannot be sipping
they cannot be sipping	I cannot have sipped
you cannot have sipped
he cannot have sipped
we cannot have sipped
you cannot have sipped
they cannot have sipped	I cannot have been sipping
you cannot have been sipping
he cannot have been sipping
we cannot have been sipping
you cannot have been sipping
they cannot have been sipping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I sip?
can you sip?
can he sip?
can we sip?
can you sip?
can they sip? 	can I be sipping?
can you be sipping?
can he be sipping?
can we be sipping?
can you be sipping?
can they be sipping? 	can I have sipped?
can you have sipped?
can he have sipped?
can we have sipped?
can you have sipped?
can they have sipped? 	can I have been sipping?
can you have been sipping?
can he have been sipping?
can we have been sipping?
can you have been sipping?
can they have been sipping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not sip?
can you not sip?
can he not sip?
can we not sip?
can you not sip?
can they not sip? 	can I not be sipping?
can you not be sipping?
can he not be sipping?
can we not be sipping?
can you not be sipping?
can they not be sipping? 	can I not have sipped?
can you not have sipped?
can he not have sipped?
can we not have sipped?
can you not have sipped?
can they not have sipped? 	can I not have been sipping?
can you not have been sipping?
can he not have been sipping?
can we not have been sipping?
can you not have been sipping?
can they not have been sipping?