Learn how to conjugate the English verb ascertain with the below conjugation table. To listen to the audio pronunciation for each conjugation, simply click on the speaker icon next to the conjugated tense. To practice and test yourself on the English verb ascertain, first add it to your verb list by clicking on the Add to My Verbs button above.

Indicative

Present simple

  • I ascertain
  • you ascertain
  • he ascertains
  • we ascertain
  • you ascertain
  • they ascertain

Past simple

  • I ascertained
  • you ascertained
  • he ascertained
  • we ascertained
  • you ascertained
  • they ascertained

Future

  • I will ascertain
  • you will ascertain
  • he will ascertain
  • we will ascertain
  • you will ascertain
  • they will ascertain

Present continuous

  • I am ascertaining
  • you are ascertaining
  • he is ascertaining
  • we are ascertaining
  • you are ascertaining
  • they are ascertaining

Past continuous

  • I was ascertaining
  • you were ascertaining
  • he was ascertaining
  • we were ascertaining
  • you were ascertaining
  • they were ascertaining

Future continuous

  • I will be ascertaining
  • you will be ascertaining
  • he will be ascertaining
  • we will be ascertaining
  • you will be ascertaining
  • they will be ascertaining

Present perfect

  • I have ascertained
  • you have ascertained
  • he has ascertained
  • we have ascertained
  • you have ascertained
  • they have ascertained

Pluperfect

  • I had ascertained
  • you had ascertained
  • he had ascertained
  • we had ascertained
  • you had ascertained
  • they had ascertained

Future perfect

  • I will have ascertained
  • you will have ascertained
  • he will have ascertained
  • we will have ascertained
  • you will have ascertained
  • they will have ascertained

Present perfect continuous

  • I have been ascertaining
  • you have been ascertaining
  • he has been ascertaining
  • we have been ascertaining
  • you have been ascertaining
  • they have been ascertaining

Pluperfect continuous

  • I had been ascertaining
  • you had been ascertaining
  • he had been ascertaining
  • we had been ascertaining
  • you had been ascertaining
  • they had been ascertaining

Future perfect continuous

  • I will have been ascertaining
  • you will have been ascertaining
  • he will have been ascertaining
  • we will have been ascertaining
  • you will have been ascertaining
  • they will have been ascertaining

Subjunctive

  • I would ascertain
  • you would ascertain
  • he would ascertain
  • we would ascertain
  • you would ascertain
  • they would ascertain

  • I would be ascertaining
  • you would be ascertaining
  • he would be ascertaining
  • we would be ascertaining
  • you would be ascertaining
  • they would be ascertaining

  • I would have ascertained
  • you would have ascertained
  • he would have ascertained
  • we would have ascertained
  • you would have ascertained
  • they would have ascertained

  • I would have been ascertaining
  • you would have been ascertaining
  • he would have been ascertaining
  • we would have been ascertaining
  • you would have been ascertaining
  • they would have been ascertaining

Imperative

Affirmative

  • (you) ascertain
  • (we) Let's ascertain
  • (you) ascertain

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