The mandative subjunctive is a formal grammatical structure used in academic, legal, medical, and business writing to express demands, recommendations, requirements, and necessity. Unlike indicative forms, the subjunctive uses the base verb regardless of subject, creating a distinctive formal register essential for professional communication.
Quick tip: The subjunctive base form never changes: 'I suggest he leave' (not 'leaves'), 'It is essential she be present' (not 'is'). Third person singular has NO -s ending in the subjunctive.
Mandative subjunctive after verbs
After verbs expressing demand, requirement, or recommendation (suggest, recommend, insist, demand, require, propose, request, urge, ask), use base form in the that-clause.
The committee recommended that the policy be implemented immediately.
The board insisted that she submit her resignation by Friday.
The regulations require that all applicants provide proof of identity.
Mandative subjunctive after adjectives
After adjectives expressing necessity or importance (essential, vital, crucial, imperative, necessary, important, mandatory), use It is + adjective + that + subject + base form.
It is essential that every participant follow the guidelines.
It is imperative that the data be verified before publication.
It is crucial that the report be completed on time.
Passive subjunctive
Form the passive subjunctive with be + past participle (not 'is' or 'are'). Common in formal requirements about actions done to something.
The court orders that the defendant be released on bail.
It is necessary that the meeting be postponed until further notice.
The board proposes that the merger be approved by shareholders.
Were-subjunctive (hypothetical)
Use were for all subjects in hypothetical conditions and wishes. This creates formal register in conditional statements.
If I were in your position, I would reconsider the proposal.
If she were available, she would attend the conference.
I wish it were possible to extend the deadline.
Common mistakes
Not "The committee recommended that the policy is implemented." — say "The committee recommended that the policy be implemented.". Use base form 'be' (not indicative 'is') after mandative verbs. The subjunctive signals formal requirement, not factual statement..
Not "It is essential that every participant follows the guidelines." — say "It is essential that every participant follow the guidelines.". Base form 'follow' (no -s) after 'essential that' regardless of third person subject. The -s ending marks indicative, not subjunctive mood..
Not "The doctor suggested that she gets more rest." — say "The doctor suggested that she get more rest.". After 'suggest that', use subjunctive base form 'get'. In American English, this formal structure is standard; British English may use 'should get' as alternative..
Practise it
The subjunctive appears in formal contexts: legal documents ('The court orders that...'), academic policies ('It is mandatory that...'), medical protocols ('It is imperative that...'), and business communications ('The CEO insists that...'). Practice rewriting informal recommendations as formal subjunctive statements.