I could succeed you could succeed he could succeed we could succeed you could succeed they could succeed
Forma com V-ing
I could be succeeding you could be succeeding he could be succeeding we could be succeeding you could be succeeding they could be succeeding
Perfeito
I could have succeeded you could have succeeded he could have succeeded we could have succeeded you could have succeeded they could have succeeded
Perfeito com V-ing
I could have been succeeding you could have been succeeding he could have been succeeding we could have been succeeding you could have been succeeding they could have been succeeding
Negação
Forma simple
I couldn't succeed you couldn't succeed he couldn't succeed we couldn't succeed you couldn't succeed they couldn't succeed
Forma com V-ing
I couldn't be succeeding you couldn't be succeeding he couldn't be succeeding we couldn't be succeeding you couldn't be succeeding they couldn't be succeeding
Perfeito
I couldn't have succeeded you couldn't have succeeded he couldn't have succeeded we couldn't have succeeded you couldn't have succeeded they couldn't have succeeded
Perfeito com V-ing
I couldn't have been succeeding you couldn't have been succeeding he couldn't have been succeeding we couldn't have been succeeding you couldn't have been succeeding they couldn't have been succeeding
Forma interrogativa
Forma simple
could I succeed? could you succeed? could he succeed? could we succeed? could you succeed? could they succeed?
Forma com V-ing
could I be succeeding? could you be succeeding? could he be succeeding? could we be succeeding? could you be succeeding? could they be succeeding?
Perfeito
could I have succeeded? could you have succeeded? could he have succeeded? could we have succeeded? could you have succeeded? could they have succeeded?
Perfeito com V-ing
could I have been succeeding? could you have been succeeding? could he have been succeeding? could we have been succeeding? could you have been succeeding? could they have been succeeding?
Forma interro-Negação
Forma simple
couldn't I succeed? couldn't you succeed? couldn't he succeed? couldn't we succeed? couldn't you succeed? couldn't they succeed?
Forma com V-ing
couldn't I be succeeding? couldn't you be succeeding? couldn't he be succeeding? couldn't we be succeeding? couldn't you be succeeding? couldn't they be succeeding?
Perfeito
couldn't I have succeeded? couldn't you have succeeded? couldn't he have succeeded? couldn't we have succeeded? couldn't you have succeeded? couldn't they have succeeded?
Perfeito com V-ing
couldn't I have been succeeding? couldn't you have been succeeding? couldn't he have been succeeding? couldn't we have been succeeding? couldn't you have been succeeding? couldn't they have been succeeding?