English verb conjugation
TO ASCERTAIN

Regular verb: ascertain - ascertained - ascertained

Indicative

Present	Present continuous	Preterite	Preterite continuous
do I not ascertain? do you not ascertain? does he not ascertain? do we not ascertain? do you not ascertain? do they not ascertain?	am I not ascertaining? are you not ascertaining? is he not ascertaining? are we not ascertaining? are you not ascertaining? are they not ascertaining?	did I not ascertain? did you not ascertain? did he not ascertain? did we not ascertain? did you not ascertain? did they not ascertain?	was I not ascertaining? were you not ascertaining? was he not ascertaining? were we not ascertaining? were you not ascertaining? were they not ascertaining?
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
have I not ascertained? have you not ascertained? has he not ascertained? have we not ascertained? have you not ascertained? have they not ascertained?	have I not been ascertaining? have you not been ascertaining? has he not been ascertaining? have we not been ascertaining? have you not been ascertaining? have they not been ascertaining?	had I not ascertained? had you not ascertained? had he not ascertained? had we not ascertained? had you not ascertained? had they not ascertained?	had I not been ascertaining? had you not been ascertaining? had he not been ascertaining? had we not been ascertaining? had you not been ascertaining? had they not been ascertaining?
Future	Future continuous	Future perfect	Future perfect continuous
will I not ascertain? will you not ascertain? will he not ascertain? will we not ascertain? will you not ascertain? will they not ascertain?	will I not be ascertaining? will you not be ascertaining? will he not be ascertaining? will we not be ascertaining? will you not be ascertaining? will they not be ascertaining?	will I not have ascertained? will you not have ascertained? will he not have ascertained? will we not have ascertained? will you not have ascertained? will they not have ascertained?	will I not have been ascertaining? will you not have been ascertaining? will he not have been ascertaining? will we not have been ascertaining? will you not have been ascertaining? will they not have been ascertaining?

Conditional

Present	Present continuous	Past	Past continuous
would I not ascertain? would you not ascertain? would he not ascertain? would we not ascertain? would you not ascertain? would they not ascertain?	would I not be ascertaining? would you not be ascertaining? would he not be ascertaining? would we not be ascertaining? would you not be ascertaining? would they not be ascertaining?	would I not have ascertained? would you not have ascertained? would he not have ascertained? would we not have ascertained? would you not have ascertained? would they not have ascertained?	would I not have been ascertaining? would you not have been ascertaining? would he not have been ascertaining? would we not have been ascertaining? would you not have been ascertaining? would they not have been ascertaining?

Infinitive

Imperative

Infinitive		Imperative
to ascertain		- - -

Participle

Present	Past
ascertaining	ascertained