can drowse
Verbo regular: drowse - drowsed- drowsed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can drowse
you can drowse
he can drowse
we can drowse
you can drowse
they can drowse 	I can be drowsing
you can be drowsing
he can be drowsing
we can be drowsing
you can be drowsing
they can be drowsing	I can have drowsed
you can have drowsed
he can have drowsed
we can have drowsed
you can have drowsed
they can have drowsed	I can have been drowsing
you can have been drowsing
he can have been drowsing
we can have been drowsing
you can have been drowsing
they can have been drowsing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot drowse
you cannot drowse
he cannot drowse
we cannot drowse
you cannot drowse
they cannot drowse 	I cannot be drowsing
you cannot be drowsing
he cannot be drowsing
we cannot be drowsing
you cannot be drowsing
they cannot be drowsing	I cannot have drowsed
you cannot have drowsed
he cannot have drowsed
we cannot have drowsed
you cannot have drowsed
they cannot have drowsed	I cannot have been drowsing
you cannot have been drowsing
he cannot have been drowsing
we cannot have been drowsing
you cannot have been drowsing
they cannot have been drowsing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I drowse?
can you drowse?
can he drowse?
can we drowse?
can you drowse?
can they drowse? 	can I be drowsing?
can you be drowsing?
can he be drowsing?
can we be drowsing?
can you be drowsing?
can they be drowsing? 	can I have drowsed?
can you have drowsed?
can he have drowsed?
can we have drowsed?
can you have drowsed?
can they have drowsed? 	can I have been drowsing?
can you have been drowsing?
can he have been drowsing?
can we have been drowsing?
can you have been drowsing?
can they have been drowsing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not drowse?
can you not drowse?
can he not drowse?
can we not drowse?
can you not drowse?
can they not drowse? 	can I not be drowsing?
can you not be drowsing?
can he not be drowsing?
can we not be drowsing?
can you not be drowsing?
can they not be drowsing? 	can I not have drowsed?
can you not have drowsed?
can he not have drowsed?
can we not have drowsed?
can you not have drowsed?
can they not have drowsed? 	can I not have been drowsing?
can you not have been drowsing?
can he not have been drowsing?
can we not have been drowsing?
can you not have been drowsing?
can they not have been drowsing?