Conjugate verb "ascertain" in English
Conjugation of the verb ascertain[ˌæsəˈteɪn],
regular 
Indicative
Present Indefinite
Present Continuous
Present Perfect
Present Perfect Continuous
Past Indefinite
Past Continuous
Past Perfect
Past Perfect Continuous
Future Indefinite
Future Continuous
Future Perfect
Future Perfect Continuous
Indicative
Present Indefinite
I don't ascertainyou don't ascertain
he/she/it doesn't ascertain
we don't ascertain
you don't ascertain
they don't ascertain
Present Continuous
I am not ascertainingyou aren't ascertaining
he/she/it isn't ascertaining
we aren't ascertaining
you aren't ascertaining
they aren't ascertaining
Present Perfect
I haven't ascertainedyou haven't ascertained
he/she/it hasn't ascertained
we haven't ascertained
you haven't ascertained
they haven't ascertained
Present Perfect Continuous
I haven't been ascertainingyou haven't been ascertaining
he/she/it hasn't been ascertaining
we haven't been ascertaining
you haven't been ascertaining
they haven't been ascertaining
Past Indefinite
I didn't ascertainyou didn't ascertain
he/she/it didn't ascertain
we didn't ascertain
you didn't ascertain
they didn't ascertain
Past Continuous
I wasn't ascertainingyou weren't ascertaining
he/she/it wasn't ascertaining
we weren't ascertaining
you weren't ascertaining
they weren't ascertaining
Past Perfect
I hadn't ascertainedyou hadn't ascertained
he/she/it hadn't ascertained
we hadn't ascertained
you hadn't ascertained
they hadn't ascertained
Past Perfect Continuous
I hadn't been ascertainingyou hadn't been ascertaining
he/she/it hadn't been ascertaining
we hadn't been ascertaining
you hadn't been ascertaining
they hadn't been ascertaining
Future Indefinite
I shan't / won't ascertainyou won't ascertain
he/she/it won't ascertain
we shan't / won't ascertain
you won't ascertain
they won't ascertain
Future Continuous
I shan't / won't be ascertainingyou won't be ascertaining
he/she/it won't be ascertaining
we shan't / won't be ascertaining
you won't be ascertaining
they won't be ascertaining
Future Perfect
I shan't / won't have ascertainedyou won't have ascertained
he/she/it won't have ascertained
we shan't / won't have ascertained
you won't have ascertained
they won't have ascertained
Future Perfect Continuous
I shan't / won't have been ascertainingyou won't have been ascertaining
he/she/it won't have been ascertaining
we shan't / won't have been ascertaining
you won't have been ascertaining
they won't have been ascertaining
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't ascertainyou wouldn't ascertain
he/she/it wouldn't ascertain
we wouldn't ascertain
you wouldn't ascertain
they wouldn't ascertain
Conditional Present Continuous
I wouldn't be ascertainingyou wouldn't be ascertaining
he/she/it wouldn't be ascertaining
we wouldn't be ascertaining
you wouldn't be ascertaining
they wouldn't be ascertaining
Conditional Perfect
I wouldn't have ascertainedyou wouldn't have ascertained
he/she/it wouldn't have ascertained
we wouldn't have ascertained
you wouldn't have ascertained
they wouldn't have ascertained
Conditional Perfect Continuous
I wouldn't have been ascertainingyou wouldn't have been ascertaining
he/she/it wouldn't have been ascertaining
we wouldn't have been ascertaining
you wouldn't have been ascertaining
they wouldn't have been ascertaining
Participles
Present
Past
Infinitives
Infinitives
Popular English Verbs
Conjugation of English verbs
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