Conjugación del verbo inglés COULD RESEARCH
Verbo regular: research - researched - researched
Afirmación
Forma simple
I could researchyou could research
he could research
we could research
you could research
they could research
Forma con V-ing
I could be researchingyou could be researching
he could be researching
we could be researching
you could be researching
they could be researching
Perfecto
I could have researchedyou could have researched
he could have researched
we could have researched
you could have researched
they could have researched
Perfecto con V-ing
I could have been researchingyou could have been researching
he could have been researching
we could have been researching
you could have been researching
they could have been researching
Negación
Forma simple
I couldn't researchyou couldn't research
he couldn't research
we couldn't research
you couldn't research
they couldn't research
Forma con V-ing
I couldn't be researchingyou couldn't be researching
he couldn't be researching
we couldn't be researching
you couldn't be researching
they couldn't be researching
Perfecto
I couldn't have researchedyou couldn't have researched
he couldn't have researched
we couldn't have researched
you couldn't have researched
they couldn't have researched
Perfecto con V-ing
I couldn't have been researchingyou couldn't have been researching
he couldn't have been researching
we couldn't have been researching
you couldn't have been researching
they couldn't have been researching
Forma interrogativa
Forma simple
could I research?could you research?
could he research?
could we research?
could you research?
could they research?
Forma con V-ing
could I be researching?could you be researching?
could he be researching?
could we be researching?
could you be researching?
could they be researching?
Perfecto
could I have researched?could you have researched?
could he have researched?
could we have researched?
could you have researched?
could they have researched?
Perfecto con V-ing
could I have been researching?could you have been researching?
could he have been researching?
could we have been researching?
could you have been researching?
could they have been researching?
Forma interro-negativa
Forma simple
couldn't I research?couldn't you research?
couldn't he research?
couldn't we research?
couldn't you research?
couldn't they research?
Forma con V-ing
couldn't I be researching?couldn't you be researching?
couldn't he be researching?
couldn't we be researching?
couldn't you be researching?
couldn't they be researching?
Perfecto
couldn't I have researched?couldn't you have researched?
couldn't he have researched?
couldn't we have researched?
couldn't you have researched?
couldn't they have researched?
Perfecto con V-ing
couldn't I have been researching?couldn't you have been researching?
couldn't he have been researching?
couldn't we have been researching?
couldn't you have been researching?
couldn't they have been researching?