Conjugación del verbo inglés
COULD INFECT

Verbo regular: infect - infected - infected

Afirmación

Forma simple	Forma con V-ing
I could infect you could infect he could infect we could infect you could infect they could infect	I could be infecting you could be infecting he could be infecting we could be infecting you could be infecting they could be infecting
Perfecto	Perfecto con V-ing
I could have infected you could have infected he could have infected we could have infected you could have infected they could have infected	I could have been infecting you could have been infecting he could have been infecting we could have been infecting you could have been infecting they could have been infecting

Negación

Forma simple	Forma con V-ing
I couldn't infect you couldn't infect he couldn't infect we couldn't infect you couldn't infect they couldn't infect	I couldn't be infecting you couldn't be infecting he couldn't be infecting we couldn't be infecting you couldn't be infecting they couldn't be infecting
Perfecto	Perfecto con V-ing
I couldn't have infected you couldn't have infected he couldn't have infected we couldn't have infected you couldn't have infected they couldn't have infected	I couldn't have been infecting you couldn't have been infecting he couldn't have been infecting we couldn't have been infecting you couldn't have been infecting they couldn't have been infecting

Forma interrogativa

Forma simple	Forma con V-ing
could I infect? could you infect? could he infect? could we infect? could you infect? could they infect?	could I be infecting? could you be infecting? could he be infecting? could we be infecting? could you be infecting? could they be infecting?
Perfecto	Perfecto con V-ing
could I have infected? could you have infected? could he have infected? could we have infected? could you have infected? could they have infected?	could I have been infecting? could you have been infecting? could he have been infecting? could we have been infecting? could you have been infecting? could they have been infecting?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I infect? couldn't you infect? couldn't he infect? couldn't we infect? couldn't you infect? couldn't they infect?	couldn't I be infecting? couldn't you be infecting? couldn't he be infecting? couldn't we be infecting? couldn't you be infecting? couldn't they be infecting?
Perfecto	Perfecto con V-ing
couldn't I have infected? couldn't you have infected? couldn't he have infected? couldn't we have infected? couldn't you have infected? couldn't they have infected?	couldn't I have been infecting? couldn't you have been infecting? couldn't he have been infecting? couldn't we have been infecting? couldn't you have been infecting? couldn't they have been infecting?