can 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 can witness
you can witness
she can witness
we can witness
you can witness
they can witness 	I can be witnessing
you can be witnessing
she can be witnessing
we can be witnessing
you can be witnessing
they can be witnessing	I can have witnessed
you can have witnessed
she can have witnessed
we can have witnessed
you can have witnessed
they can have witnessed	I can have been witnessing
you can have been witnessing
she can have been witnessing
we can have been witnessing
you can have been witnessing
they can have been witnessing	

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

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

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