Conjugación del verbo inglés
COULD SCREAM

Verbo regular: scream - screamed - screamed

Afirmación

Forma simple	Forma con V-ing
I could scream you could scream he could scream we could scream you could scream they could scream	I could be screaming you could be screaming he could be screaming we could be screaming you could be screaming they could be screaming
Perfecto	Perfecto con V-ing
I could have screamed you could have screamed he could have screamed we could have screamed you could have screamed they could have screamed	I could have been screaming you could have been screaming he could have been screaming we could have been screaming you could have been screaming they could have been screaming

Negación

Forma simple	Forma con V-ing
I couldn't scream you couldn't scream he couldn't scream we couldn't scream you couldn't scream they couldn't scream	I couldn't be screaming you couldn't be screaming he couldn't be screaming we couldn't be screaming you couldn't be screaming they couldn't be screaming
Perfecto	Perfecto con V-ing
I couldn't have screamed you couldn't have screamed he couldn't have screamed we couldn't have screamed you couldn't have screamed they couldn't have screamed	I couldn't have been screaming you couldn't have been screaming he couldn't have been screaming we couldn't have been screaming you couldn't have been screaming they couldn't have been screaming

Forma interrogativa

Forma simple	Forma con V-ing
could I scream? could you scream? could he scream? could we scream? could you scream? could they scream?	could I be screaming? could you be screaming? could he be screaming? could we be screaming? could you be screaming? could they be screaming?
Perfecto	Perfecto con V-ing
could I have screamed? could you have screamed? could he have screamed? could we have screamed? could you have screamed? could they have screamed?	could I have been screaming? could you have been screaming? could he have been screaming? could we have been screaming? could you have been screaming? could they have been screaming?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I scream? couldn't you scream? couldn't he scream? couldn't we scream? couldn't you scream? couldn't they scream?	couldn't I be screaming? couldn't you be screaming? couldn't he be screaming? couldn't we be screaming? couldn't you be screaming? couldn't they be screaming?
Perfecto	Perfecto con V-ing
couldn't I have screamed? couldn't you have screamed? couldn't he have screamed? couldn't we have screamed? couldn't you have screamed? couldn't they have screamed?	couldn't I have been screaming? couldn't you have been screaming? couldn't he have been screaming? couldn't we have been screaming? couldn't you have been screaming? couldn't they have been screaming?