Conjugación del verbo inglés
COULD SHELL

Verbo regular: shell - shelled - shelled

Afirmación

Forma simple	Forma con V-ing
I could shell you could shell she could shell we could shell you could shell they could shell	I could be shelling you could be shelling she could be shelling we could be shelling you could be shelling they could be shelling
Perfecto	Perfecto con V-ing
I could have shelled you could have shelled she could have shelled we could have shelled you could have shelled they could have shelled	I could have been shelling you could have been shelling she could have been shelling we could have been shelling you could have been shelling they could have been shelling

Negación

Forma simple	Forma con V-ing
I couldn't shell you couldn't shell she couldn't shell we couldn't shell you couldn't shell they couldn't shell	I couldn't be shelling you couldn't be shelling she couldn't be shelling we couldn't be shelling you couldn't be shelling they couldn't be shelling
Perfecto	Perfecto con V-ing
I couldn't have shelled you couldn't have shelled she couldn't have shelled we couldn't have shelled you couldn't have shelled they couldn't have shelled	I couldn't have been shelling you couldn't have been shelling she couldn't have been shelling we couldn't have been shelling you couldn't have been shelling they couldn't have been shelling

Forma interrogativa

Forma simple	Forma con V-ing
could I shell? could you shell? could she shell? could we shell? could you shell? could they shell?	could I be shelling? could you be shelling? could she be shelling? could we be shelling? could you be shelling? could they be shelling?
Perfecto	Perfecto con V-ing
could I have shelled? could you have shelled? could she have shelled? could we have shelled? could you have shelled? could they have shelled?	could I have been shelling? could you have been shelling? could she have been shelling? could we have been shelling? could you have been shelling? could they have been shelling?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I shell? couldn't you shell? couldn't she shell? couldn't we shell? couldn't you shell? couldn't they shell?	couldn't I be shelling? couldn't you be shelling? couldn't she be shelling? couldn't we be shelling? couldn't you be shelling? couldn't they be shelling?
Perfecto	Perfecto con V-ing
couldn't I have shelled? couldn't you have shelled? couldn't she have shelled? couldn't we have shelled? couldn't you have shelled? couldn't they have shelled?	couldn't I have been shelling? couldn't you have been shelling? couldn't she have been shelling? couldn't we have been shelling? couldn't you have been shelling? couldn't they have been shelling?