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