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
he may concentrate
we may concentrate
you may concentrate
they may concentrate 	I may be concentrating
you may be concentrating
he may be concentrating
we may be concentrating
you may be concentrating
they may be concentrating	I may have concentrated
you may have concentrated
he 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
he 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 mayn't concentrate
you mayn't concentrate
he mayn't concentrate
we mayn't concentrate
you mayn't concentrate
they mayn't concentrate 	I mayn't be concentrating
you mayn't be concentrating
he mayn't be concentrating
we mayn't be concentrating
you mayn't be concentrating
they mayn't be concentrating	I mayn't have concentrated
you mayn't have concentrated
he mayn't have concentrated
we mayn't have concentrated
you mayn't have concentrated
they mayn't have concentrated	I mayn't have been concentrating
you mayn't have been concentrating
he mayn't have been concentrating
we mayn't have been concentrating
you mayn't have been concentrating
they mayn't have been concentrating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I concentrate?
may you concentrate?
may he concentrate?
may we concentrate?
may you concentrate?
may they concentrate? 	may I be concentrating?
may you be concentrating?
may he be concentrating?
may we be concentrating?
may you be concentrating?
may they be concentrating? 	may I have concentrated?
may you have concentrated?
may he 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 he 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 	
mayn't I concentrate?
mayn't you concentrate?
mayn't he concentrate?
mayn't we concentrate?
mayn't you concentrate?
mayn't they concentrate? 	mayn't I be concentrating?
mayn't you be concentrating?
mayn't he be concentrating?
mayn't we be concentrating?
mayn't you be concentrating?
mayn't they be concentrating? 	mayn't I have concentrated?
mayn't you have concentrated?
mayn't he have concentrated?
mayn't we have concentrated?
mayn't you have concentrated?
mayn't they have concentrated? 	mayn't I have been concentrating?
mayn't you have been concentrating?
mayn't he have been concentrating?
mayn't we have been concentrating?
mayn't you have been concentrating?
mayn't they have been concentrating?