can guard
Verbo regular: guard - guarded- guarded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can guard
you can guard
he can guard
we can guard
you can guard
they can guard 	I can be guarding
you can be guarding
he can be guarding
we can be guarding
you can be guarding
they can be guarding	I can have guarded
you can have guarded
he can have guarded
we can have guarded
you can have guarded
they can have guarded	I can have been guarding
you can have been guarding
he can have been guarding
we can have been guarding
you can have been guarding
they can have been guarding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't guard
you can't guard
he can't guard
we can't guard
you can't guard
they can't guard 	I can't be guarding
you can't be guarding
he can't be guarding
we can't be guarding
you can't be guarding
they can't be guarding	I can't have guarded
you can't have guarded
he can't have guarded
we can't have guarded
you can't have guarded
they can't have guarded	I can't have been guarding
you can't have been guarding
he can't have been guarding
we can't have been guarding
you can't have been guarding
they can't have been guarding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I guard?
can you guard?
can he guard?
can we guard?
can you guard?
can they guard? 	can I be guarding?
can you be guarding?
can he be guarding?
can we be guarding?
can you be guarding?
can they be guarding? 	can I have guarded?
can you have guarded?
can he have guarded?
can we have guarded?
can you have guarded?
can they have guarded? 	can I have been guarding?
can you have been guarding?
can he have been guarding?
can we have been guarding?
can you have been guarding?
can they have been guarding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I guard?
can't you guard?
can't he guard?
can't we guard?
can't you guard?
can't they guard? 	can't I be guarding?
can't you be guarding?
can't he be guarding?
can't we be guarding?
can't you be guarding?
can't they be guarding? 	can't I have guarded?
can't you have guarded?
can't he have guarded?
can't we have guarded?
can't you have guarded?
can't they have guarded? 	can't I have been guarding?
can't you have been guarding?
can't he have been guarding?
can't we have been guarding?
can't you have been guarding?
can't they have been guarding?