can concentrate
Regelmä&szlig;iges Verb: concentrate - concentrated- concentrated

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I can concentrate
you can concentrate
she can concentrate
we can concentrate
you can concentrate
they can concentrate 	I can be concentrating
you can be concentrating
she can be concentrating
we can be concentrating
you can be concentrating
they can be concentrating	I can have concentrated
you can have concentrated
she can have concentrated
we can have concentrated
you can have concentrated
they can have concentrated	I can have been concentrating
you can have been concentrating
she can have been concentrating
we can have been concentrating
you can have been concentrating
they can have been concentrating	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I cannot concentrate
you cannot concentrate
she cannot concentrate
we cannot concentrate
you cannot concentrate
they cannot concentrate 	I cannot be concentrating
you cannot be concentrating
she cannot be concentrating
we cannot be concentrating
you cannot be concentrating
they cannot be concentrating	I cannot have concentrated
you cannot have concentrated
she cannot have concentrated
we cannot have concentrated
you cannot have concentrated
they cannot have concentrated	I cannot have been concentrating
you cannot have been concentrating
she cannot have been concentrating
we cannot have been concentrating
you cannot have been concentrating
they cannot have been concentrating	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can I concentrate?
can you concentrate?
can she concentrate?
can we concentrate?
can you concentrate?
can they concentrate? 	can I be concentrating?
can you be concentrating?
can she be concentrating?
can we be concentrating?
can you be concentrating?
can they be concentrating? 	can I have concentrated?
can you have concentrated?
can she have concentrated?
can we have concentrated?
can you have concentrated?
can they have concentrated? 	can I have been concentrating?
can you have been concentrating?
can she have been concentrating?
can we have been concentrating?
can you have been concentrating?
can they have been concentrating? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can I not concentrate?
can you not concentrate?
can she not concentrate?
can we not concentrate?
can you not concentrate?
can they not concentrate? 	can I not be concentrating?
can you not be concentrating?
can she not be concentrating?
can we not be concentrating?
can you not be concentrating?
can they not be concentrating? 	can I not have concentrated?
can you not have concentrated?
can she not have concentrated?
can we not have concentrated?
can you not have concentrated?
can they not have concentrated? 	can I not have been concentrating?
can you not have been concentrating?
can she not have been concentrating?
can we not have been concentrating?
can you not have been concentrating?
can they not have been concentrating?