may certificate
Verbe régulier : certificate - certificated- certificated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may certificate
you may certificate
he may certificate
we may certificate
you may certificate
they may certificate 	I may be certificating
you may be certificating
he may be certificating
we may be certificating
you may be certificating
they may be certificating	I may have certificated
you may have certificated
he may have certificated
we may have certificated
you may have certificated
they may have certificated	I may have been certificating
you may have been certificating
he may have been certificating
we may have been certificating
you may have been certificating
they may have been certificating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may not certificate
you may not certificate
he may not certificate
we may not certificate
you may not certificate
they may not certificate 	I may not be certificating
you may not be certificating
he may not be certificating
we may not be certificating
you may not be certificating
they may not be certificating	I may not have certificated
you may not have certificated
he may not have certificated
we may not have certificated
you may not have certificated
they may not have certificated	I may not have been certificating
you may not have been certificating
he may not have been certificating
we may not have been certificating
you may not have been certificating
they may not have been certificating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I certificate?
may you certificate?
may he certificate?
may we certificate?
may you certificate?
may they certificate? 	may I be certificating?
may you be certificating?
may he be certificating?
may we be certificating?
may you be certificating?
may they be certificating? 	may I have certificated?
may you have certificated?
may he have certificated?
may we have certificated?
may you have certificated?
may they have certificated? 	may I have been certificating?
may you have been certificating?
may he have been certificating?
may we have been certificating?
may you have been certificating?
may they have been certificating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I not certificate?
may you not certificate?
may he not certificate?
may we not certificate?
may you not certificate?
may they not certificate? 	may I not be certificating?
may you not be certificating?
may he not be certificating?
may we not be certificating?
may you not be certificating?
may they not be certificating? 	may I not have certificated?
may you not have certificated?
may he not have certificated?
may we not have certificated?
may you not have certificated?
may they not have certificated? 	may I not have been certificating?
may you not have been certificating?
may he not have been certificating?
may we not have been certificating?
may you not have been certificating?
may they not have been certificating?