may concentrate
Verbe régulier : concentrate - concentrated- concentrated
Traduction française : se concentrer - concentrer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may concentrate
you may concentrate
she may concentrate
we may concentrate
you may concentrate
they may concentrate 	I may be concentrating
you may be concentrating
she may be concentrating
we may be concentrating
you may be concentrating
they may be concentrating	I may have concentrated
you may have concentrated
she may have concentrated
we may have concentrated
you may have concentrated
they may have concentrated	I may have been concentrating
you may have been concentrating
she may have been concentrating
we may have been concentrating
you may have been concentrating
they may have been concentrating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may not concentrate
you may not concentrate
she may not concentrate
we may not concentrate
you may not concentrate
they may not concentrate 	I may not be concentrating
you may not be concentrating
she may not be concentrating
we may not be concentrating
you may not be concentrating
they may not be concentrating	I may not have concentrated
you may not have concentrated
she may not have concentrated
we may not have concentrated
you may not have concentrated
they may not have concentrated	I may not have been concentrating
you may not have been concentrating
she may not have been concentrating
we may not have been concentrating
you may not have been concentrating
they may not have been concentrating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I concentrate?
may you concentrate?
may she concentrate?
may we concentrate?
may you concentrate?
may they concentrate? 	may I be concentrating?
may you be concentrating?
may she be concentrating?
may we be concentrating?
may you be concentrating?
may they be concentrating? 	may I have concentrated?
may you have concentrated?
may she have concentrated?
may we have concentrated?
may you have concentrated?
may they have concentrated? 	may I have been concentrating?
may you have been concentrating?
may she have been concentrating?
may we have been concentrating?
may you have been concentrating?
may they have been concentrating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I not concentrate?
may you not concentrate?
may she not concentrate?
may we not concentrate?
may you not concentrate?
may they not concentrate? 	may I not be concentrating?
may you not be concentrating?
may she not be concentrating?
may we not be concentrating?
may you not be concentrating?
may they not be concentrating? 	may I not have concentrated?
may you not have concentrated?
may she not have concentrated?
may we not have concentrated?
may you not have concentrated?
may they not have concentrated? 	may I not have been concentrating?
may you not have been concentrating?
may she not have been concentrating?
may we not have been concentrating?
may you not have been concentrating?
may they not have been concentrating?