Eaakbari, once you read the
Verb tense chapter of MGMAT SC guide (Command subjunctive mood topic) or other equivalent source then you will be lot more clearer on this concept. They have detailed explanations with examples there.
In summay:
Command subjunctive – used with certain bossy verbs, which tell people to do thingso E.g., The agency demanded that Gary be ready before noon.
Same form that you would use to command Gary directly
o Be ready before noon, Gary!
Basic rules: Bare form of verb – infinitive without the "to"
Use simple present tense
No –s on the end for third person singular
Verb "to be" is always just "be", but never use is, are, or am
Subjunctive construction with “bossy verb”:Bossy verb + THAT + subject + command subjunctive Correct: We propose that the school board disband. Wrong: We propose the school board disband. --That is not optionalCommand Subjunctive ONLY (indicates desire): Demand, Dictate, Insist, Mandate, Propose, Recommend, Request, Stipulate, and Suggest