Conjugación del verbo inglés
COULD BOIL

Verbo regular: boil - boiled - boiled

Afirmación

Forma simple	Forma con V-ing
I could boil you could boil she could boil we could boil you could boil they could boil	I could be boiling you could be boiling she could be boiling we could be boiling you could be boiling they could be boiling
Perfecto	Perfecto con V-ing
I could have boiled you could have boiled she could have boiled we could have boiled you could have boiled they could have boiled	I could have been boiling you could have been boiling she could have been boiling we could have been boiling you could have been boiling they could have been boiling

Negación

Forma simple	Forma con V-ing
I couldn't boil you couldn't boil she couldn't boil we couldn't boil you couldn't boil they couldn't boil	I couldn't be boiling you couldn't be boiling she couldn't be boiling we couldn't be boiling you couldn't be boiling they couldn't be boiling
Perfecto	Perfecto con V-ing
I couldn't have boiled you couldn't have boiled she couldn't have boiled we couldn't have boiled you couldn't have boiled they couldn't have boiled	I couldn't have been boiling you couldn't have been boiling she couldn't have been boiling we couldn't have been boiling you couldn't have been boiling they couldn't have been boiling

Forma interrogativa

Forma simple	Forma con V-ing
could I boil? could you boil? could she boil? could we boil? could you boil? could they boil?	could I be boiling? could you be boiling? could she be boiling? could we be boiling? could you be boiling? could they be boiling?
Perfecto	Perfecto con V-ing
could I have boiled? could you have boiled? could she have boiled? could we have boiled? could you have boiled? could they have boiled?	could I have been boiling? could you have been boiling? could she have been boiling? could we have been boiling? could you have been boiling? could they have been boiling?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I boil? couldn't you boil? couldn't she boil? couldn't we boil? couldn't you boil? couldn't they boil?	couldn't I be boiling? couldn't you be boiling? couldn't she be boiling? couldn't we be boiling? couldn't you be boiling? couldn't they be boiling?
Perfecto	Perfecto con V-ing
couldn't I have boiled? couldn't you have boiled? couldn't she have boiled? couldn't we have boiled? couldn't you have boiled? couldn't they have boiled?	couldn't I have been boiling? couldn't you have been boiling? couldn't she have been boiling? couldn't we have been boiling? couldn't you have been boiling? couldn't they have been boiling?