must witness
Verbe régulier : witness - witnessed- witnessed
Traduction française : être témoin de - témoigner 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must witness
you must witness
he must witness
we must witness
you must witness
they must witness 	I must be witnessing
you must be witnessing
he must be witnessing
we must be witnessing
you must be witnessing
they must be witnessing	I must have witnessed
you must have witnessed
he must have witnessed
we must have witnessed
you must have witnessed
they must have witnessed	I must have been witnessing
you must have been witnessing
he must have been witnessing
we must have been witnessing
you must have been witnessing
they must have been witnessing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't witness
you mustn't witness
he mustn't witness
we mustn't witness
you mustn't witness
they mustn't witness 	I mustn't be witnessing
you mustn't be witnessing
he mustn't be witnessing
we mustn't be witnessing
you mustn't be witnessing
they mustn't be witnessing	I mustn't have witnessed
you mustn't have witnessed
he mustn't have witnessed
we mustn't have witnessed
you mustn't have witnessed
they mustn't have witnessed	I mustn't have been witnessing
you mustn't have been witnessing
he mustn't have been witnessing
we mustn't have been witnessing
you mustn't have been witnessing
they mustn't have been witnessing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I witness?
must you witness?
must he witness?
must we witness?
must you witness?
must they witness? 	must I be witnessing?
must you be witnessing?
must he be witnessing?
must we be witnessing?
must you be witnessing?
must they be witnessing? 	must I have witnessed?
must you have witnessed?
must he have witnessed?
must we have witnessed?
must you have witnessed?
must they have witnessed? 	must I have been witnessing?
must you have been witnessing?
must he have been witnessing?
must we have been witnessing?
must you have been witnessing?
must they have been witnessing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I witness?
mustn't you witness?
mustn't he witness?
mustn't we witness?
mustn't you witness?
mustn't they witness? 	mustn't I be witnessing?
mustn't you be witnessing?
mustn't he be witnessing?
mustn't we be witnessing?
mustn't you be witnessing?
mustn't they be witnessing? 	mustn't I have witnessed?
mustn't you have witnessed?
mustn't he have witnessed?
mustn't we have witnessed?
mustn't you have witnessed?
mustn't they have witnessed? 	mustn't I have been witnessing?
mustn't you have been witnessing?
mustn't he have been witnessing?
mustn't we have been witnessing?
mustn't you have been witnessing?
mustn't they have been witnessing?