Verbo regular: underachieve - underachieved - underachieved
Afirmação
Forma simple
I could underachieve you could underachieve he could underachieve we could underachieve you could underachieve they could underachieve
Forma com V-ing
I could be underachieving you could be underachieving he could be underachieving we could be underachieving you could be underachieving they could be underachieving
Perfeito
I could have underachieved you could have underachieved he could have underachieved we could have underachieved you could have underachieved they could have underachieved
Perfeito com V-ing
I could have been underachieving you could have been underachieving he could have been underachieving we could have been underachieving you could have been underachieving they could have been underachieving
Negação
Forma simple
I couldn't underachieve you couldn't underachieve he couldn't underachieve we couldn't underachieve you couldn't underachieve they couldn't underachieve
Forma com V-ing
I couldn't be underachieving you couldn't be underachieving he couldn't be underachieving we couldn't be underachieving you couldn't be underachieving they couldn't be underachieving
Perfeito
I couldn't have underachieved you couldn't have underachieved he couldn't have underachieved we couldn't have underachieved you couldn't have underachieved they couldn't have underachieved
Perfeito com V-ing
I couldn't have been underachieving you couldn't have been underachieving he couldn't have been underachieving we couldn't have been underachieving you couldn't have been underachieving they couldn't have been underachieving
Forma interrogativa
Forma simple
could I underachieve? could you underachieve? could he underachieve? could we underachieve? could you underachieve? could they underachieve?
Forma com V-ing
could I be underachieving? could you be underachieving? could he be underachieving? could we be underachieving? could you be underachieving? could they be underachieving?
Perfeito
could I have underachieved? could you have underachieved? could he have underachieved? could we have underachieved? could you have underachieved? could they have underachieved?
Perfeito com V-ing
could I have been underachieving? could you have been underachieving? could he have been underachieving? could we have been underachieving? could you have been underachieving? could they have been underachieving?
Forma interro-Negação
Forma simple
couldn't I underachieve? couldn't you underachieve? couldn't he underachieve? couldn't we underachieve? couldn't you underachieve? couldn't they underachieve?
Forma com V-ing
couldn't I be underachieving? couldn't you be underachieving? couldn't he be underachieving? couldn't we be underachieving? couldn't you be underachieving? couldn't they be underachieving?
Perfeito
couldn't I have underachieved? couldn't you have underachieved? couldn't he have underachieved? couldn't we have underachieved? couldn't you have underachieved? couldn't they have underachieved?
Perfeito com V-ing
couldn't I have been underachieving? couldn't you have been underachieving? couldn't he have been underachieving? couldn't we have been underachieving? couldn't you have been underachieving? couldn't they have been underachieving?