must authenticate
Verbe régulier : authenticate - authenticated- authenticated
Traduction française : établir l'authenticité de - légaliser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must authenticate
you must authenticate
he must authenticate
we must authenticate
you must authenticate
they must authenticate 	I must be authenticating
you must be authenticating
he must be authenticating
we must be authenticating
you must be authenticating
they must be authenticating	I must have authenticated
you must have authenticated
he must have authenticated
we must have authenticated
you must have authenticated
they must have authenticated	I must have been authenticating
you must have been authenticating
he must have been authenticating
we must have been authenticating
you must have been authenticating
they must have been authenticating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not authenticate
you must not authenticate
he must not authenticate
we must not authenticate
you must not authenticate
they must not authenticate 	I must not be authenticating
you must not be authenticating
he must not be authenticating
we must not be authenticating
you must not be authenticating
they must not be authenticating	I must not have authenticated
you must not have authenticated
he must not have authenticated
we must not have authenticated
you must not have authenticated
they must not have authenticated	I must not have been authenticating
you must not have been authenticating
he must not have been authenticating
we must not have been authenticating
you must not have been authenticating
they must not have been authenticating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I authenticate?
must you authenticate?
must he authenticate?
must we authenticate?
must you authenticate?
must they authenticate? 	must I be authenticating?
must you be authenticating?
must he be authenticating?
must we be authenticating?
must you be authenticating?
must they be authenticating? 	must I have authenticated?
must you have authenticated?
must he have authenticated?
must we have authenticated?
must you have authenticated?
must they have authenticated? 	must I have been authenticating?
must you have been authenticating?
must he have been authenticating?
must we have been authenticating?
must you have been authenticating?
must they have been authenticating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not authenticate?
must you not authenticate?
must he not authenticate?
must we not authenticate?
must you not authenticate?
must they not authenticate? 	must I not be authenticating?
must you not be authenticating?
must he not be authenticating?
must we not be authenticating?
must you not be authenticating?
must they not be authenticating? 	must I not have authenticated?
must you not have authenticated?
must he not have authenticated?
must we not have authenticated?
must you not have authenticated?
must they not have authenticated? 	must I not have been authenticating?
must you not have been authenticating?
must he not have been authenticating?
must we not have been authenticating?
must you not have been authenticating?
must they not have been authenticating?