Conjugação do verbo inglês
COULD SKIM

Verbo regular: skim - skimmed - skimmed

Afirmação

Forma simple	Forma com V-ing
I could skim you could skim she could skim we could skim you could skim they could skim	I could be skimming you could be skimming she could be skimming we could be skimming you could be skimming they could be skimming
Perfeito	Perfeito com V-ing
I could have skimmed you could have skimmed she could have skimmed we could have skimmed you could have skimmed they could have skimmed	I could have been skimming you could have been skimming she could have been skimming we could have been skimming you could have been skimming they could have been skimming

Negação

Forma simple	Forma com V-ing
I couldn't skim you couldn't skim she couldn't skim we couldn't skim you couldn't skim they couldn't skim	I couldn't be skimming you couldn't be skimming she couldn't be skimming we couldn't be skimming you couldn't be skimming they couldn't be skimming
Perfeito	Perfeito com V-ing
I couldn't have skimmed you couldn't have skimmed she couldn't have skimmed we couldn't have skimmed you couldn't have skimmed they couldn't have skimmed	I couldn't have been skimming you couldn't have been skimming she couldn't have been skimming we couldn't have been skimming you couldn't have been skimming they couldn't have been skimming

Forma interrogativa

Forma simple	Forma com V-ing
could I skim? could you skim? could she skim? could we skim? could you skim? could they skim?	could I be skimming? could you be skimming? could she be skimming? could we be skimming? could you be skimming? could they be skimming?
Perfeito	Perfeito com V-ing
could I have skimmed? could you have skimmed? could she have skimmed? could we have skimmed? could you have skimmed? could they have skimmed?	could I have been skimming? could you have been skimming? could she have been skimming? could we have been skimming? could you have been skimming? could they have been skimming?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I skim? couldn't you skim? couldn't she skim? couldn't we skim? couldn't you skim? couldn't they skim?	couldn't I be skimming? couldn't you be skimming? couldn't she be skimming? couldn't we be skimming? couldn't you be skimming? couldn't they be skimming?
Perfeito	Perfeito com V-ing
couldn't I have skimmed? couldn't you have skimmed? couldn't she have skimmed? couldn't we have skimmed? couldn't you have skimmed? couldn't they have skimmed?	couldn't I have been skimming? couldn't you have been skimming? couldn't she have been skimming? couldn't we have been skimming? couldn't you have been skimming? couldn't they have been skimming?