The mandative subjunctive uses the base form of the verb in formal that-clauses.
It often follows verbs such as recommend, insist, demand, propose, and suggest.
It also follows adjectives such as essential, vital, important, and necessary.
| Use | Pattern | Example |
|---|---|---|
| Core form | Verb + that + subject + base verb | The panel recommended that the rule be changed. |
| Variation | It + be + adjective + that + subject + base verb | It is essential that every file remain confidential. |
| Advanced form | Negative subjunctive | They insisted that he not contact the witness. |
In the subjunctive, the verb does not take -s in the third person: that he be, not that he is.
Should + base verb is also possible in many varieties of English: that he should be informed.