subjunctive mood - grammar
https://www.grammar.com/subjunctive-moodThe subjunctive mood is used when you need to (1) depict situations contrary to fact, (2) express a wish, (3) express a supposition, (4) issue a command, (5) make a suggestion, or (6) show necessity. You form the subjunctive of action verbs by using the plural form of the verb, even in situations calling for the third-person singular, as in The ...