I could bicycle you could bicycle he could bicycle we could bicycle you could bicycle they could bicycle
Forma com V-ing
I could be bicycling you could be bicycling he could be bicycling we could be bicycling you could be bicycling they could be bicycling
Perfeito
I could have bicycled you could have bicycled he could have bicycled we could have bicycled you could have bicycled they could have bicycled
Perfeito com V-ing
I could have been bicycling you could have been bicycling he could have been bicycling we could have been bicycling you could have been bicycling they could have been bicycling
Negação
Forma simple
I couldn't bicycle you couldn't bicycle he couldn't bicycle we couldn't bicycle you couldn't bicycle they couldn't bicycle
Forma com V-ing
I couldn't be bicycling you couldn't be bicycling he couldn't be bicycling we couldn't be bicycling you couldn't be bicycling they couldn't be bicycling
Perfeito
I couldn't have bicycled you couldn't have bicycled he couldn't have bicycled we couldn't have bicycled you couldn't have bicycled they couldn't have bicycled
Perfeito com V-ing
I couldn't have been bicycling you couldn't have been bicycling he couldn't have been bicycling we couldn't have been bicycling you couldn't have been bicycling they couldn't have been bicycling
Forma interrogativa
Forma simple
could I bicycle? could you bicycle? could he bicycle? could we bicycle? could you bicycle? could they bicycle?
Forma com V-ing
could I be bicycling? could you be bicycling? could he be bicycling? could we be bicycling? could you be bicycling? could they be bicycling?
Perfeito
could I have bicycled? could you have bicycled? could he have bicycled? could we have bicycled? could you have bicycled? could they have bicycled?
Perfeito com V-ing
could I have been bicycling? could you have been bicycling? could he have been bicycling? could we have been bicycling? could you have been bicycling? could they have been bicycling?
Forma interro-Negação
Forma simple
couldn't I bicycle? couldn't you bicycle? couldn't he bicycle? couldn't we bicycle? couldn't you bicycle? couldn't they bicycle?
Forma com V-ing
couldn't I be bicycling? couldn't you be bicycling? couldn't he be bicycling? couldn't we be bicycling? couldn't you be bicycling? couldn't they be bicycling?
Perfeito
couldn't I have bicycled? couldn't you have bicycled? couldn't he have bicycled? couldn't we have bicycled? couldn't you have bicycled? couldn't they have bicycled?
Perfeito com V-ing
couldn't I have been bicycling? couldn't you have been bicycling? couldn't he have been bicycling? couldn't we have been bicycling? couldn't you have been bicycling? couldn't they have been bicycling?