Coniugazione del verbo inglese COULD ASCERTAIN

Verbo regolare: ascertain - ascertained - ascertained

Affermazione

Forma semplice

I could ascertain
you could ascertain
he could ascertain
we could ascertain
you could ascertain
they could ascertain

Forma con V-ing

I could be ascertaining
you could be ascertaining
he could be ascertaining
we could be ascertaining
you could be ascertaining
they could be ascertaining

Perfetto

I could have ascertained
you could have ascertained
he could have ascertained
we could have ascertained
you could have ascertained
they could have ascertained

Perfetto con V-ing

I could have been ascertaining
you could have been ascertaining
he 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 ascertain
you couldn't ascertain
he couldn't ascertain
we couldn't ascertain
you couldn't ascertain
they couldn't ascertain

Forma con V-ing

I couldn't be ascertaining
you couldn't be ascertaining
he couldn't be ascertaining
we couldn't be ascertaining
you couldn't be ascertaining
they couldn't be ascertaining

Perfetto

I couldn't have ascertained
you couldn't have ascertained
he 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 ascertaining
you couldn't have been ascertaining
he 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 he ascertain?
could we ascertain?
could you ascertain?
could they ascertain?

Forma con V-ing

could I be ascertaining?
could you be ascertaining?
could he be ascertaining?
could we be ascertaining?
could you be ascertaining?
could they be ascertaining?

Perfetto

could I have ascertained?
could you have ascertained?
could he 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 he 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 he 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 he 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 he 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 he have been ascertaining?
couldn't we have been ascertaining?
couldn't you have been ascertaining?
couldn't they have been ascertaining?

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