Conjugación del verbo inglés
COULD YARN

Verbo regular: yarn - yarned - yarned

Afirmación

Forma simple	Forma con V-ing
I could yarn you could yarn he could yarn we could yarn you could yarn they could yarn	I could be yarning you could be yarning he could be yarning we could be yarning you could be yarning they could be yarning
Perfecto	Perfecto con V-ing
I could have yarned you could have yarned he could have yarned we could have yarned you could have yarned they could have yarned	I could have been yarning you could have been yarning he could have been yarning we could have been yarning you could have been yarning they could have been yarning

Negación

Forma simple	Forma con V-ing
I couldn't yarn you couldn't yarn he couldn't yarn we couldn't yarn you couldn't yarn they couldn't yarn	I couldn't be yarning you couldn't be yarning he couldn't be yarning we couldn't be yarning you couldn't be yarning they couldn't be yarning
Perfecto	Perfecto con V-ing
I couldn't have yarned you couldn't have yarned he couldn't have yarned we couldn't have yarned you couldn't have yarned they couldn't have yarned	I couldn't have been yarning you couldn't have been yarning he couldn't have been yarning we couldn't have been yarning you couldn't have been yarning they couldn't have been yarning

Forma interrogativa

Forma simple	Forma con V-ing
could I yarn? could you yarn? could he yarn? could we yarn? could you yarn? could they yarn?	could I be yarning? could you be yarning? could he be yarning? could we be yarning? could you be yarning? could they be yarning?
Perfecto	Perfecto con V-ing
could I have yarned? could you have yarned? could he have yarned? could we have yarned? could you have yarned? could they have yarned?	could I have been yarning? could you have been yarning? could he have been yarning? could we have been yarning? could you have been yarning? could they have been yarning?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I yarn? couldn't you yarn? couldn't he yarn? couldn't we yarn? couldn't you yarn? couldn't they yarn?	couldn't I be yarning? couldn't you be yarning? couldn't he be yarning? couldn't we be yarning? couldn't you be yarning? couldn't they be yarning?
Perfecto	Perfecto con V-ing
couldn't I have yarned? couldn't you have yarned? couldn't he have yarned? couldn't we have yarned? couldn't you have yarned? couldn't they have yarned?	couldn't I have been yarning? couldn't you have been yarning? couldn't he have been yarning? couldn't we have been yarning? couldn't you have been yarning? couldn't they have been yarning?