Coniugazione del verbo inglese COULD ASCERTAIN
Verbo regolare: ascertain - ascertained - ascertained
Affermazione
Forma semplice
I could ascertainyou could ascertain
she could ascertain
we could ascertain
you could ascertain
they could ascertain
Forma con V-ing
I could be ascertainingyou could be ascertaining
she could be ascertaining
we could be ascertaining
you could be ascertaining
they could be ascertaining
Perfetto
I could have ascertainedyou could have ascertained
she could have ascertained
we could have ascertained
you could have ascertained
they could have ascertained
Perfetto con V-ing
I could have been ascertainingyou could have been ascertaining
she could have been ascertaining
we could have been ascertaining
you could have been ascertaining
they could have been ascertaining
Negazione
Forma semplice
I couldn't ascertainyou couldn't ascertain
she couldn't ascertain
we couldn't ascertain
you couldn't ascertain
they couldn't ascertain
Forma con V-ing
I couldn't be ascertainingyou couldn't be ascertaining
she couldn't be ascertaining
we couldn't be ascertaining
you couldn't be ascertaining
they couldn't be ascertaining
Perfetto
I couldn't have ascertainedyou couldn't have ascertained
she couldn't have ascertained
we couldn't have ascertained
you couldn't have ascertained
they couldn't have ascertained
Perfetto con V-ing
I couldn't have been ascertainingyou couldn't have been ascertaining
she couldn't have been ascertaining
we couldn't have been ascertaining
you couldn't have been ascertaining
they couldn't have been ascertaining
Forma interrogativa
Forma semplice
could I ascertain?could you ascertain?
could she ascertain?
could we ascertain?
could you ascertain?
could they ascertain?
Forma con V-ing
could I be ascertaining?could you be ascertaining?
could she be ascertaining?
could we be ascertaining?
could you be ascertaining?
could they be ascertaining?
Perfetto
could I have ascertained?could you have ascertained?
could she have ascertained?
could we have ascertained?
could you have ascertained?
could they have ascertained?
Perfetto con V-ing
could I have been ascertaining?could you have been ascertaining?
could she have been ascertaining?
could we have been ascertaining?
could you have been ascertaining?
could they have been ascertaining?
Forma interro-negativa
Forma semplice
couldn't I ascertain?couldn't you ascertain?
couldn't she ascertain?
couldn't we ascertain?
couldn't you ascertain?
couldn't they ascertain?
Forma con V-ing
couldn't I be ascertaining?couldn't you be ascertaining?
couldn't she be ascertaining?
couldn't we be ascertaining?
couldn't you be ascertaining?
couldn't they be ascertaining?
Perfetto
couldn't I have ascertained?couldn't you have ascertained?
couldn't she have ascertained?
couldn't we have ascertained?
couldn't you have ascertained?
couldn't they have ascertained?
Perfetto con V-ing
couldn't I have been ascertaining?couldn't you have been ascertaining?
couldn't she have been ascertaining?
couldn't we have been ascertaining?
couldn't you have been ascertaining?
couldn't they have been ascertaining?