can concern
Verbe régulier : concern - concerned- concerned
Traduction française : inquiéter - concerner 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can concern
you can concern
she can concern
we can concern
you can concern
they can concern 	I can be concerning
you can be concerning
she can be concerning
we can be concerning
you can be concerning
they can be concerning	I can have concerned
you can have concerned
she can have concerned
we can have concerned
you can have concerned
they can have concerned	I can have been concerning
you can have been concerning
she can have been concerning
we can have been concerning
you can have been concerning
they can have been concerning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot concern
you cannot concern
she cannot concern
we cannot concern
you cannot concern
they cannot concern 	I cannot be concerning
you cannot be concerning
she cannot be concerning
we cannot be concerning
you cannot be concerning
they cannot be concerning	I cannot have concerned
you cannot have concerned
she cannot have concerned
we cannot have concerned
you cannot have concerned
they cannot have concerned	I cannot have been concerning
you cannot have been concerning
she cannot have been concerning
we cannot have been concerning
you cannot have been concerning
they cannot have been concerning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I concern?
can you concern?
can she concern?
can we concern?
can you concern?
can they concern? 	can I be concerning?
can you be concerning?
can she be concerning?
can we be concerning?
can you be concerning?
can they be concerning? 	can I have concerned?
can you have concerned?
can she have concerned?
can we have concerned?
can you have concerned?
can they have concerned? 	can I have been concerning?
can you have been concerning?
can she have been concerning?
can we have been concerning?
can you have been concerning?
can they have been concerning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not concern?
can you not concern?
can she not concern?
can we not concern?
can you not concern?
can they not concern? 	can I not be concerning?
can you not be concerning?
can she not be concerning?
can we not be concerning?
can you not be concerning?
can they not be concerning? 	can I not have concerned?
can you not have concerned?
can she not have concerned?
can we not have concerned?
can you not have concerned?
can they not have concerned? 	can I not have been concerning?
can you not have been concerning?
can she not have been concerning?
can we not have been concerning?
can you not have been concerning?
can they not have been concerning?