could progress
Verbo regular: progress - progressed- progressed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could progress
you could progress
he could progress
we could progress
you could progress
they could progress 	I could be progressing
you could be progressing
he could be progressing
we could be progressing
you could be progressing
they could be progressing	I could have progressed
you could have progressed
he could have progressed
we could have progressed
you could have progressed
they could have progressed	I could have been progressing
you could have been progressing
he could have been progressing
we could have been progressing
you could have been progressing
they could have been progressing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't progress
you couldn't progress
he couldn't progress
we couldn't progress
you couldn't progress
they couldn't progress 	I couldn't be progressing
you couldn't be progressing
he couldn't be progressing
we couldn't be progressing
you couldn't be progressing
they couldn't be progressing	I couldn't have progressed
you couldn't have progressed
he couldn't have progressed
we couldn't have progressed
you couldn't have progressed
they couldn't have progressed	I couldn't have been progressing
you couldn't have been progressing
he couldn't have been progressing
we couldn't have been progressing
you couldn't have been progressing
they couldn't have been progressing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I progress?
could you progress?
could he progress?
could we progress?
could you progress?
could they progress? 	could I be progressing?
could you be progressing?
could he be progressing?
could we be progressing?
could you be progressing?
could they be progressing? 	could I have progressed?
could you have progressed?
could he have progressed?
could we have progressed?
could you have progressed?
could they have progressed? 	could I have been progressing?
could you have been progressing?
could he have been progressing?
could we have been progressing?
could you have been progressing?
could they have been progressing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I progress?
couldn't you progress?
couldn't he progress?
couldn't we progress?
couldn't you progress?
couldn't they progress? 	couldn't I be progressing?
couldn't you be progressing?
couldn't he be progressing?
couldn't we be progressing?
couldn't you be progressing?
couldn't they be progressing? 	couldn't I have progressed?
couldn't you have progressed?
couldn't he have progressed?
couldn't we have progressed?
couldn't you have progressed?
couldn't they have progressed? 	couldn't I have been progressing?
couldn't you have been progressing?
couldn't he have been progressing?
couldn't we have been progressing?
couldn't you have been progressing?
couldn't they have been progressing?