| Form | that + subject + base verb; one form for every person | The school insists that he wear a tie. |
| Negative and passive | not goes before the verb; the passive is be + past participle | I suggest that he not go. / It is vital that it be checked. |
| After verbs | suggest, recommend, insist, demand, require and request call for it | The doctor recommends that she rest more. |
| After adjectives and nouns | essential, vital, important and necessary; nouns such as requirement and proposal | It is essential that everyone be on time. |
| British and American | American English prefers the bare verb; British English often adds should | We recommend that she should apply. (US: apply) |
| Were | were follows every subject after if, as if and wish | I wish it were Friday. |
| Lest | lest is formal and takes the base verb or should | She whispered lest the baby wake. |
| C2Fixed formulas | old formulas keep the bare verb and are quoted whole | I'll be there, come what may. / Suffice it to say that we lost. |
| C2Be-clauses | be opens a formal concession with two alternatives | Be it large or small, every gift helps. |
| C2Formal texts | orders, resolutions and motions keep the bare verb | I move that the minutes be approved. |
| C2Proverbs | short sayings keep an older order and the bare verb | Waste not, want not. |
| Trap | suggest takes a that clause or -ing | I suggest that he go. / I suggest going early. |