Conjugación del verbo inglés
COULD INTRODUCE

Verbo regular: introduce - introduced - introduced

Afirmación

Forma simple	Forma con V-ing
I could introduce you could introduce he could introduce we could introduce you could introduce they could introduce	I could be introducing you could be introducing he could be introducing we could be introducing you could be introducing they could be introducing
Perfecto	Perfecto con V-ing
I could have introduced you could have introduced he could have introduced we could have introduced you could have introduced they could have introduced	I could have been introducing you could have been introducing he could have been introducing we could have been introducing you could have been introducing they could have been introducing

Negación

Forma simple	Forma con V-ing
I couldn't introduce you couldn't introduce he couldn't introduce we couldn't introduce you couldn't introduce they couldn't introduce	I couldn't be introducing you couldn't be introducing he couldn't be introducing we couldn't be introducing you couldn't be introducing they couldn't be introducing
Perfecto	Perfecto con V-ing
I couldn't have introduced you couldn't have introduced he couldn't have introduced we couldn't have introduced you couldn't have introduced they couldn't have introduced	I couldn't have been introducing you couldn't have been introducing he couldn't have been introducing we couldn't have been introducing you couldn't have been introducing they couldn't have been introducing

Forma interrogativa

Forma simple	Forma con V-ing
could I introduce? could you introduce? could he introduce? could we introduce? could you introduce? could they introduce?	could I be introducing? could you be introducing? could he be introducing? could we be introducing? could you be introducing? could they be introducing?
Perfecto	Perfecto con V-ing
could I have introduced? could you have introduced? could he have introduced? could we have introduced? could you have introduced? could they have introduced?	could I have been introducing? could you have been introducing? could he have been introducing? could we have been introducing? could you have been introducing? could they have been introducing?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I introduce? couldn't you introduce? couldn't he introduce? couldn't we introduce? couldn't you introduce? couldn't they introduce?	couldn't I be introducing? couldn't you be introducing? couldn't he be introducing? couldn't we be introducing? couldn't you be introducing? couldn't they be introducing?
Perfecto	Perfecto con V-ing
couldn't I have introduced? couldn't you have introduced? couldn't he have introduced? couldn't we have introduced? couldn't you have introduced? couldn't they have introduced?	couldn't I have been introducing? couldn't you have been introducing? couldn't he have been introducing? couldn't we have been introducing? couldn't you have been introducing? couldn't they have been introducing?