Conjugação do verbo inglês
CAN WITNESS

Verbo regular: witness - witnessed - witnessed

Afirmação

Forma simple	Forma com V-ing
I can witness you can witness he can witness we can witness you can witness they can witness	I can be witnessing you can be witnessing he can be witnessing we can be witnessing you can be witnessing they can be witnessing
Perfeito	Perfeito com V-ing
I can have witnessed you can have witnessed he 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 he can have been witnessing we can have been witnessing you can have been witnessing they can have been witnessing

Negação

Forma simple	Forma com V-ing
I cannot witness you cannot witness he cannot witness we cannot witness you cannot witness they cannot witness	I cannot be witnessing you cannot be witnessing he cannot be witnessing we cannot be witnessing you cannot be witnessing they cannot be witnessing
Perfeito	Perfeito com V-ing
I cannot have witnessed you cannot have witnessed he cannot have witnessed we cannot have witnessed you cannot have witnessed they cannot have witnessed	I cannot have been witnessing you cannot have been witnessing he cannot have been witnessing we cannot have been witnessing you cannot have been witnessing they cannot have been witnessing

Forma interrogativa

Forma simple	Forma com V-ing
can I witness? can you witness? can he witness? can we witness? can you witness? can they witness?	can I be witnessing? can you be witnessing? can he be witnessing? can we be witnessing? can you be witnessing? can they be witnessing?
Perfeito	Perfeito com V-ing
can I have witnessed? can you have witnessed? can he 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 he have been witnessing? can we have been witnessing? can you have been witnessing? can they have been witnessing?

Forma interro-Negação

Forma simple	Forma com V-ing
can I not witness? can you not witness? can he not witness? can we not witness? can you not witness? can they not witness?	can I not be witnessing? can you not be witnessing? can he not be witnessing? can we not be witnessing? can you not be witnessing? can they not be witnessing?
Perfeito	Perfeito com V-ing
can I not have witnessed? can you not have witnessed? can he not have witnessed? can we not have witnessed? can you not have witnessed? can they not have witnessed?	can I not have been witnessing? can you not have been witnessing? can he not have been witnessing? can we not have been witnessing? can you not have been witnessing? can they not have been witnessing?