can look
Verbo regular: look - looked- looked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can look
you can look
he can look
we can look
you can look
they can look 	I can be looking
you can be looking
he can be looking
we can be looking
you can be looking
they can be looking	I can have looked
you can have looked
he can have looked
we can have looked
you can have looked
they can have looked	I can have been looking
you can have been looking
he can have been looking
we can have been looking
you can have been looking
they can have been looking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot look
you cannot look
he cannot look
we cannot look
you cannot look
they cannot look 	I cannot be looking
you cannot be looking
he cannot be looking
we cannot be looking
you cannot be looking
they cannot be looking	I cannot have looked
you cannot have looked
he cannot have looked
we cannot have looked
you cannot have looked
they cannot have looked	I cannot have been looking
you cannot have been looking
he cannot have been looking
we cannot have been looking
you cannot have been looking
they cannot have been looking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I look?
can you look?
can he look?
can we look?
can you look?
can they look? 	can I be looking?
can you be looking?
can he be looking?
can we be looking?
can you be looking?
can they be looking? 	can I have looked?
can you have looked?
can he have looked?
can we have looked?
can you have looked?
can they have looked? 	can I have been looking?
can you have been looking?
can he have been looking?
can we have been looking?
can you have been looking?
can they have been looking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not look?
can you not look?
can he not look?
can we not look?
can you not look?
can they not look? 	can I not be looking?
can you not be looking?
can he not be looking?
can we not be looking?
can you not be looking?
can they not be looking? 	can I not have looked?
can you not have looked?
can he not have looked?
can we not have looked?
can you not have looked?
can they not have looked? 	can I not have been looking?
can you not have been looking?
can he not have been looking?
can we not have been looking?
can you not have been looking?
can they not have been looking?