I could backpack you could backpack he could backpack we could backpack you could backpack they could backpack
Forma com V-ing
I could be backpacking you could be backpacking he could be backpacking we could be backpacking you could be backpacking they could be backpacking
Perfeito
I could have backpacked you could have backpacked he could have backpacked we could have backpacked you could have backpacked they could have backpacked
Perfeito com V-ing
I could have been backpacking you could have been backpacking he could have been backpacking we could have been backpacking you could have been backpacking they could have been backpacking
Negação
Forma simple
I couldn't backpack you couldn't backpack he couldn't backpack we couldn't backpack you couldn't backpack they couldn't backpack
Forma com V-ing
I couldn't be backpacking you couldn't be backpacking he couldn't be backpacking we couldn't be backpacking you couldn't be backpacking they couldn't be backpacking
Perfeito
I couldn't have backpacked you couldn't have backpacked he couldn't have backpacked we couldn't have backpacked you couldn't have backpacked they couldn't have backpacked
Perfeito com V-ing
I couldn't have been backpacking you couldn't have been backpacking he couldn't have been backpacking we couldn't have been backpacking you couldn't have been backpacking they couldn't have been backpacking
Forma interrogativa
Forma simple
could I backpack? could you backpack? could he backpack? could we backpack? could you backpack? could they backpack?
Forma com V-ing
could I be backpacking? could you be backpacking? could he be backpacking? could we be backpacking? could you be backpacking? could they be backpacking?
Perfeito
could I have backpacked? could you have backpacked? could he have backpacked? could we have backpacked? could you have backpacked? could they have backpacked?
Perfeito com V-ing
could I have been backpacking? could you have been backpacking? could he have been backpacking? could we have been backpacking? could you have been backpacking? could they have been backpacking?
Forma interro-Negação
Forma simple
couldn't I backpack? couldn't you backpack? couldn't he backpack? couldn't we backpack? couldn't you backpack? couldn't they backpack?
Forma com V-ing
couldn't I be backpacking? couldn't you be backpacking? couldn't he be backpacking? couldn't we be backpacking? couldn't you be backpacking? couldn't they be backpacking?
Perfeito
couldn't I have backpacked? couldn't you have backpacked? couldn't he have backpacked? couldn't we have backpacked? couldn't you have backpacked? couldn't they have backpacked?
Perfeito com V-ing
couldn't I have been backpacking? couldn't you have been backpacking? couldn't he have been backpacking? couldn't we have been backpacking? couldn't you have been backpacking? couldn't they have been backpacking?