This is called the subjunctive mood. It is used to express desires, recommendations and orders.
"The landlord ordered that Mary leave the premises immediately", in this case the verb is "leave" instead of "leaves", and you would normally use it.
Hope it helps.
In grammar, the subjunctive mood (sometimes referred to as the conjunctive mood) is a verb mood that exists in many languages. It typically expresses wishes, commands (in subordinate clauses), emotion, possibility, judgement, necessity, and statements that are contrary to fact at present
OG - Sentence Correction 48:
The correct answer is:
The report recommended that the hospital eliminate unneeded beds, consolidate expensive services, and use space in other hospitals.
Does anybody know why it is not as below? (verbs with s for third person).
The report recommended that the hospital eliminates unneeded beds, consolidates expensive services, and uses space in other hospitals.