Languages › French When to Use the Subjunctive With the French Word 'Coire' Verbs, Expressions and Conjunctions That Require the French Subjunctive Share Flipboard Email Print French Grammar Pronunciation & Conversation Vocabulary Resources For Teachers By ThoughtCo Updated February 21, 2019 The French word croire is an irregular verb that means "to believe," and it may require the subjunctive, depending on whether it is used affirmatively, negatively or interrogatively. An affirmative sentence calls for the indicative, rather than the subjunctive. You'll use the subjunctive when croire is used to express doubt or uncertainty. Examples Je crois qu'il a raison.I think he's right. Je ne crois pas qu'il ait raison.I don't think he's right. Crois-tu qu'il ait raison ?Do you think he's right?