could engage
Verbo regular: engage - engaged- engaged

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could engage
you could engage
he could engage
we could engage
you could engage
they could engage 	I could be engaging
you could be engaging
he could be engaging
we could be engaging
you could be engaging
they could be engaging	I could have engaged
you could have engaged
he could have engaged
we could have engaged
you could have engaged
they could have engaged	I could have been engaging
you could have been engaging
he could have been engaging
we could have been engaging
you could have been engaging
they could have been engaging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't engage
you couldn't engage
he couldn't engage
we couldn't engage
you couldn't engage
they couldn't engage 	I couldn't be engaging
you couldn't be engaging
he couldn't be engaging
we couldn't be engaging
you couldn't be engaging
they couldn't be engaging	I couldn't have engaged
you couldn't have engaged
he couldn't have engaged
we couldn't have engaged
you couldn't have engaged
they couldn't have engaged	I couldn't have been engaging
you couldn't have been engaging
he couldn't have been engaging
we couldn't have been engaging
you couldn't have been engaging
they couldn't have been engaging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I engage?
could you engage?
could he engage?
could we engage?
could you engage?
could they engage? 	could I be engaging?
could you be engaging?
could he be engaging?
could we be engaging?
could you be engaging?
could they be engaging? 	could I have engaged?
could you have engaged?
could he have engaged?
could we have engaged?
could you have engaged?
could they have engaged? 	could I have been engaging?
could you have been engaging?
could he have been engaging?
could we have been engaging?
could you have been engaging?
could they have been engaging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I engage?
couldn't you engage?
couldn't he engage?
couldn't we engage?
couldn't you engage?
couldn't they engage? 	couldn't I be engaging?
couldn't you be engaging?
couldn't he be engaging?
couldn't we be engaging?
couldn't you be engaging?
couldn't they be engaging? 	couldn't I have engaged?
couldn't you have engaged?
couldn't he have engaged?
couldn't we have engaged?
couldn't you have engaged?
couldn't they have engaged? 	couldn't I have been engaging?
couldn't you have been engaging?
couldn't he have been engaging?
couldn't we have been engaging?
couldn't you have been engaging?
couldn't they have been engaging?