Conjugación del verbo inglés COULD STEM
Verbo regular: stem - stemmed - stemmed
Afirmación
Forma simple
I could stemyou could stem
he could stem
we could stem
you could stem
they could stem
Forma con V-ing
I could be stemmingyou could be stemming
he could be stemming
we could be stemming
you could be stemming
they could be stemming
Perfecto
I could have stemmedyou could have stemmed
he could have stemmed
we could have stemmed
you could have stemmed
they could have stemmed
Perfecto con V-ing
I could have been stemmingyou could have been stemming
he could have been stemming
we could have been stemming
you could have been stemming
they could have been stemming
Negación
Forma simple
I couldn't stemyou couldn't stem
he couldn't stem
we couldn't stem
you couldn't stem
they couldn't stem
Forma con V-ing
I couldn't be stemmingyou couldn't be stemming
he couldn't be stemming
we couldn't be stemming
you couldn't be stemming
they couldn't be stemming
Perfecto
I couldn't have stemmedyou couldn't have stemmed
he couldn't have stemmed
we couldn't have stemmed
you couldn't have stemmed
they couldn't have stemmed
Perfecto con V-ing
I couldn't have been stemmingyou couldn't have been stemming
he couldn't have been stemming
we couldn't have been stemming
you couldn't have been stemming
they couldn't have been stemming
Forma interrogativa
Forma simple
could I stem?could you stem?
could he stem?
could we stem?
could you stem?
could they stem?
Forma con V-ing
could I be stemming?could you be stemming?
could he be stemming?
could we be stemming?
could you be stemming?
could they be stemming?
Perfecto
could I have stemmed?could you have stemmed?
could he have stemmed?
could we have stemmed?
could you have stemmed?
could they have stemmed?
Perfecto con V-ing
could I have been stemming?could you have been stemming?
could he have been stemming?
could we have been stemming?
could you have been stemming?
could they have been stemming?
Forma interro-negativa
Forma simple
couldn't I stem?couldn't you stem?
couldn't he stem?
couldn't we stem?
couldn't you stem?
couldn't they stem?
Forma con V-ing
couldn't I be stemming?couldn't you be stemming?
couldn't he be stemming?
couldn't we be stemming?
couldn't you be stemming?
couldn't they be stemming?
Perfecto
couldn't I have stemmed?couldn't you have stemmed?
couldn't he have stemmed?
couldn't we have stemmed?
couldn't you have stemmed?
couldn't they have stemmed?
Perfecto con V-ing
couldn't I have been stemming?couldn't you have been stemming?
couldn't he have been stemming?
couldn't we have been stemming?
couldn't you have been stemming?
couldn't they have been stemming?