I've heard that subjunctive mood verbs are used the in sense of urgent or importance. But I couldn't find a complete list naming all of those verbs showing that fact up in mind that we may have new verb in that kind too.
Now what about verbs mandatory or obligatory?
Are these in subjunctive mood in these example sentences please:
It's mandatory/obligatory that she take(s) that exam.
Best Answer
With both "mandatory" and "obligatory" only the present subjunctive (uninflected base form) is used regardless of the tense of the main verb.
And in the negative, for example:
https://staff.washington.edu/marynell/grammar/subjunctive.html
Also:
http://www.onlinegrammar.com.au/subjunctive-recommend-that