Conjugação do verbo inglês
COULD SLIPPER

Verbo regular: slipper - slippered - slippered

Afirmação

Forma simple	Forma com V-ing
I could slipper you could slipper he could slipper we could slipper you could slipper they could slipper	I could be slippering you could be slippering he could be slippering we could be slippering you could be slippering they could be slippering
Perfeito	Perfeito com V-ing
I could have slippered you could have slippered he could have slippered we could have slippered you could have slippered they could have slippered	I could have been slippering you could have been slippering he could have been slippering we could have been slippering you could have been slippering they could have been slippering

Negação

Forma simple	Forma com V-ing
I couldn't slipper you couldn't slipper he couldn't slipper we couldn't slipper you couldn't slipper they couldn't slipper	I couldn't be slippering you couldn't be slippering he couldn't be slippering we couldn't be slippering you couldn't be slippering they couldn't be slippering
Perfeito	Perfeito com V-ing
I couldn't have slippered you couldn't have slippered he couldn't have slippered we couldn't have slippered you couldn't have slippered they couldn't have slippered	I couldn't have been slippering you couldn't have been slippering he couldn't have been slippering we couldn't have been slippering you couldn't have been slippering they couldn't have been slippering

Forma interrogativa

Forma simple	Forma com V-ing
could I slipper? could you slipper? could he slipper? could we slipper? could you slipper? could they slipper?	could I be slippering? could you be slippering? could he be slippering? could we be slippering? could you be slippering? could they be slippering?
Perfeito	Perfeito com V-ing
could I have slippered? could you have slippered? could he have slippered? could we have slippered? could you have slippered? could they have slippered?	could I have been slippering? could you have been slippering? could he have been slippering? could we have been slippering? could you have been slippering? could they have been slippering?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I slipper? couldn't you slipper? couldn't he slipper? couldn't we slipper? couldn't you slipper? couldn't they slipper?	couldn't I be slippering? couldn't you be slippering? couldn't he be slippering? couldn't we be slippering? couldn't you be slippering? couldn't they be slippering?
Perfeito	Perfeito com V-ing
couldn't I have slippered? couldn't you have slippered? couldn't he have slippered? couldn't we have slippered? couldn't you have slippered? couldn't they have slippered?	couldn't I have been slippering? couldn't you have been slippering? couldn't he have been slippering? couldn't we have been slippering? couldn't you have been slippering? couldn't they have been slippering?