Conjugação do verbo inglês
COULD QUARREL

Verbo regular: quarrel - quarrelled - quarrelled

Afirmação

Forma simple	Forma com V-ing
I could quarrel you could quarrel she could quarrel we could quarrel you could quarrel they could quarrel	I could be quarrelling you could be quarrelling she could be quarrelling we could be quarrelling you could be quarrelling they could be quarrelling
Perfeito	Perfeito com V-ing
I could have quarrelled you could have quarrelled she could have quarrelled we could have quarrelled you could have quarrelled they could have quarrelled	I could have been quarrelling you could have been quarrelling she could have been quarrelling we could have been quarrelling you could have been quarrelling they could have been quarrelling

Negação

Forma simple	Forma com V-ing
I couldn't quarrel you couldn't quarrel she couldn't quarrel we couldn't quarrel you couldn't quarrel they couldn't quarrel	I couldn't be quarrelling you couldn't be quarrelling she couldn't be quarrelling we couldn't be quarrelling you couldn't be quarrelling they couldn't be quarrelling
Perfeito	Perfeito com V-ing
I couldn't have quarrelled you couldn't have quarrelled she couldn't have quarrelled we couldn't have quarrelled you couldn't have quarrelled they couldn't have quarrelled	I couldn't have been quarrelling you couldn't have been quarrelling she couldn't have been quarrelling we couldn't have been quarrelling you couldn't have been quarrelling they couldn't have been quarrelling

Forma interrogativa

Forma simple	Forma com V-ing
could I quarrel? could you quarrel? could she quarrel? could we quarrel? could you quarrel? could they quarrel?	could I be quarrelling? could you be quarrelling? could she be quarrelling? could we be quarrelling? could you be quarrelling? could they be quarrelling?
Perfeito	Perfeito com V-ing
could I have quarrelled? could you have quarrelled? could she have quarrelled? could we have quarrelled? could you have quarrelled? could they have quarrelled?	could I have been quarrelling? could you have been quarrelling? could she have been quarrelling? could we have been quarrelling? could you have been quarrelling? could they have been quarrelling?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I quarrel? couldn't you quarrel? couldn't she quarrel? couldn't we quarrel? couldn't you quarrel? couldn't they quarrel?	couldn't I be quarrelling? couldn't you be quarrelling? couldn't she be quarrelling? couldn't we be quarrelling? couldn't you be quarrelling? couldn't they be quarrelling?
Perfeito	Perfeito com V-ing
couldn't I have quarrelled? couldn't you have quarrelled? couldn't she have quarrelled? couldn't we have quarrelled? couldn't you have quarrelled? couldn't they have quarrelled?	couldn't I have been quarrelling? couldn't you have been quarrelling? couldn't she have been quarrelling? couldn't we have been quarrelling? couldn't you have been quarrelling? couldn't they have been quarrelling?