Indicative
Present Indefinite
I ascertain
you ascertain
he/she/it ascertains
we ascertain
you ascertain
they ascertain
Present Continuous
I am ascertaining
you are ascertaining
he/she/it is ascertaining
we are ascertaining
you are ascertaining
they are ascertaining
Present Perfect
I have ascertained
you have ascertained
he/she/it has ascertained
we have ascertained
you have ascertained
they have ascertained
Present Perfect Continuous
I have been ascertaining
you have been ascertaining
he/she/it has been ascertaining
we have been ascertaining
you have been ascertaining
they have been ascertaining
Past Indefinite
I ascertained
you ascertained
he/she/it ascertained
we ascertained
you ascertained
they ascertained
Past Continuous
I was ascertaining
you were ascertaining
he/she/it was ascertaining
we were ascertaining
you were ascertaining
they were ascertaining
Past Perfect
I had ascertained
you had ascertained
he/she/it had ascertained
we had ascertained
you had ascertained
they had ascertained
Past Perfect Continuous
I had been ascertaining
you had been ascertaining
he/she/it had been ascertaining
we had been ascertaining
you had been ascertaining
they had been ascertaining
Future Indefinite
I will ascertain
you will ascertain
he/she/it will ascertain
we will ascertain
you will ascertain
they will ascertain
Future Continuous
I will be ascertaining
you will be ascertaining
he/she/it will be ascertaining
we will be ascertaining
you will be ascertaining
they will be ascertaining
Future Perfect
I will have ascertained
you will have ascertained
he/she/it will have ascertained
we will have ascertained
you will have ascertained
they will have ascertained
Future Perfect Continuous
I will have been ascertaining
you will have been ascertaining
he/she/it will have been ascertaining
we will have been ascertaining
you will have been ascertaining
they will have been ascertaining
Conditional
Conditional Present
I would ascertain
you would ascertain
he/she/it would ascertain
we would ascertain
you would ascertain
they would ascertain
Conditional Present Continuous
I would be ascertaining
you would be ascertaining
he/she/it would be ascertaining
we would be ascertaining
you would be ascertaining
they would be ascertaining
Conditional Perfect
I would have ascertained
you would have ascertained
he/she/it would have ascertained
we would have ascertained
you would have ascertained
they would have ascertained
Conditional Perfect Continuous
I would have been ascertaining
you would have been ascertaining
he/she/it would have been ascertaining
we would have been ascertaining
you would have been ascertaining
they would have been ascertaining