can concenter
Regelmä&szlig;iges Verb: concenter - concentered- concentered

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I can concenter
you can concenter
he can concenter
we can concenter
you can concenter
they can concenter 	I can be concentering
you can be concentering
he can be concentering
we can be concentering
you can be concentering
they can be concentering	I can have concentered
you can have concentered
he can have concentered
we can have concentered
you can have concentered
they can have concentered	I can have been concentering
you can have been concentering
he can have been concentering
we can have been concentering
you can have been concentering
they can have been concentering	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I cannot concenter
you cannot concenter
he cannot concenter
we cannot concenter
you cannot concenter
they cannot concenter 	I cannot be concentering
you cannot be concentering
he cannot be concentering
we cannot be concentering
you cannot be concentering
they cannot be concentering	I cannot have concentered
you cannot have concentered
he cannot have concentered
we cannot have concentered
you cannot have concentered
they cannot have concentered	I cannot have been concentering
you cannot have been concentering
he cannot have been concentering
we cannot have been concentering
you cannot have been concentering
they cannot have been concentering	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can I concenter?
can you concenter?
can he concenter?
can we concenter?
can you concenter?
can they concenter? 	can I be concentering?
can you be concentering?
can he be concentering?
can we be concentering?
can you be concentering?
can they be concentering? 	can I have concentered?
can you have concentered?
can he have concentered?
can we have concentered?
can you have concentered?
can they have concentered? 	can I have been concentering?
can you have been concentering?
can he have been concentering?
can we have been concentering?
can you have been concentering?
can they have been concentering? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can I not concenter?
can you not concenter?
can he not concenter?
can we not concenter?
can you not concenter?
can they not concenter? 	can I not be concentering?
can you not be concentering?
can he not be concentering?
can we not be concentering?
can you not be concentering?
can they not be concentering? 	can I not have concentered?
can you not have concentered?
can he not have concentered?
can we not have concentered?
can you not have concentered?
can they not have concentered? 	can I not have been concentering?
can you not have been concentering?
can he not have been concentering?
can we not have been concentering?
can you not have been concentering?
can they not have been concentering?