can certificate
Verbe régulier : certificate - certificated- certificated

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

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can't certificate
you can't certificate
he can't certificate
we can't certificate
you can't certificate
they can't certificate 	I can't be certificating
you can't be certificating
he can't be certificating
we can't be certificating
you can't be certificating
they can't be certificating	I can't have certificated
you can't have certificated
he can't have certificated
we can't have certificated
you can't have certificated
they can't have certificated	I can't have been certificating
you can't have been certificating
he can't have been certificating
we can't have been certificating
you can't have been certificating
they can't have been certificating	

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

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