mavii

Some of us probably can still recall that there are three general moods of verbs in English, mood being that aspect of the verb that expresses the state of mind or attitude of the speaker toward ...

The reason is verbs in the singular third-person subjunctive ignore the subject-verb agreement rule. They drop the "-s" or "-es" at their tail ends and take the base form of the verb (the verb's infinitive form without the "to").