Subjunctive After Impersonal Judgment Expressions: Il est important / nécessaire / possible que

After il faut que, the second great gateway into the productive French subjunctive is the family of impersonal judgment expressions — constructions of the shape il est + adjective + que or il + impersonal verb + que, expressing evaluation, necessity, possibility, or emotion. Il est important que tu viennes, il est dommage qu'il soit malade, il vaut mieux qu'on attende, il est possible que ça pleuve — these are everyday French. A learner who can produce two dozen of them on demand has unlocked a huge expressive range.

This page works through the four major sub-categories of impersonal judgment, gives a high-frequency vocabulary list for each, and addresses the three most important boundary cases — il me semble que vs. il semble que, il est probable que vs. il est possible que, and il est évident que vs. il est important que. The boundary cases are where learners actually stumble; the rule itself is straightforward once you see the pattern.

The general rule

An impersonal expression of the form il est + adjective + que (or il + verb + que, like il convient que or il vaut mieux que) takes the subjunctive in the embedded que-clause whenever the expression conveys judgment, necessity, possibility, emotion, or evaluation rather than the assertion of a fact.

The semantic logic is consistent with everything you know about the French subjunctive: these expressions evaluate, demand, suppose, or react to an embedded clause — they do not assert that clause as fact. Il est important que tu viennes says something about the importance of your coming; it does not assert that you are coming. The embedded clause is the target of the judgment, and the subjunctive marks this status.

Four families of impersonal trigger

It is helpful to learn these expressions in semantic clusters rather than as a flat list, because the clusters mirror the four core triggers of the subjunctive itself.

1. Necessity and obligation

These are the closest neighbors of il faut que. They state that something must, should, or had better happen.

• il est nécessaire que — it's necessary that
• il est important que — it's important that
• il est essentiel que — it's essential that
• il est indispensable que — it's indispensable that
• il est urgent que — it's urgent that
• il vaut mieux que — it's better that / one had better
• il convient que (formal) — it's fitting that

The conditional forms — il vaudrait mieux que, il serait préférable que, il serait nécessaire que — soften the judgment from a flat assertion to a suggestion, and are extremely common in polite conversation.

2. Possibility, probability, and doubt

Expressions of possibility or doubt take the subjunctive because the embedded clause is precisely not asserted to be true.

• il est possible que — it's possible that
• il se peut que — it may be that
• il est probable que — see boundary case below
• il est peu probable que — it's unlikely that
• il est impossible que — it's impossible that
• il est douteux que — it's doubtful that

The construction il se peut que is one of the most natural ways to express tentative possibility in spoken French — far more idiomatic than learners often realize. Il se peut qu'il vienne, on verra — "He might come, we'll see" — is the kind of casual hedging French speakers do constantly.

3. Emotion and evaluation

Reactions to a fact — surprise, regret, satisfaction, disapproval — pattern with the subjunctive even when the underlying fact is undeniably real.

• il est dommage que — it's a shame that
• il est triste que — it's sad that
• il est heureux que — it's fortunate that
• il est étrange que — it's strange that
• il est surprenant que — it's surprising that
• il est normal que — it's normal that
• il est juste que — it's right that
• il est injuste que — it's unfair that
• il est regrettable que — it's regrettable that
• il est incroyable que — it's incredible that

The category is large because French evaluative vocabulary is rich. Anything of the form il est + evaluative-adjective + que — bizarre, scandaleux, inquiétant, amusant, fâcheux, triste, surprenant — should reflexively trigger the subjunctive in your ear.

4. Apparent fact and seeming: the il (me) semble que distinction

The verb sembler — "to seem" — produces one of the most pedagogically useful contrasts in the impersonal-trigger system, because the same root produces both a subjunctive-trigger and an indicative-trigger depending on whether a personal pronoun (me, te, lui, nous, vous, leur) is attached.

• Il semble que
  • subjunctive — "it seems (in the world) that..." — the seeming is impersonal, and the embedded clause is presented as a hypothesis or appearance, not an assertion of fact.
• Il me semble que
  • indicative — "it seems to me that..." — the seeming is anchored in the speaker's perception, and the embedded clause is being asserted as the speaker's leaning impression of what is the case.

This is one of the few cases in French grammar where adding or removing a single pronoun flips the entire mood of the embedded clause. Spend some time reading these examples aloud until the contrast is intuitive — it is one of the points where careful French distinguishes itself from sloppy French.

A more complete reference list

Below is a working list of the high-frequency impersonal triggers, sorted by category. Treat this as the inventory you should be able to produce on demand at B2.

Triggers that take the indicative — the boundary cases

Not every il est + adj. + que construction takes the subjunctive. The expressions that assert the embedded clause as fact take the indicative. This is the trip-up zone for B1 and B2 learners.

A useful test: rephrase the expression as a yes/no question. If the answer to "Is X the case?" is being asserted as yes, the indicative is right. If the speaker is hedging, evaluating, or refusing to commit, the subjunctive is right. Il est certain que X asserts X. Il est possible que X declines to assert X. The mood follows.

A second test, when the assertive expression is negated or questioned: many of the indicative-taking expressions flip to the subjunctive when negated, because negation strips out the assertion.

This pattern — assertive in the affirmative, subjunctive under negation or question — is the same one you see with penser que and croire que, and it is the deepest unifying logic of the French subjunctive system.

Tense matching: présent and passé in the embedded clause

The choice between subjonctif présent and subjonctif passé in the embedded clause is governed by the timing of the embedded action relative to the matrix expression — not by the tense of the matrix itself.

In modern French, this rule has collapsed — past matrix verbs no longer trigger the imparfait or plus-que-parfait of the subjunctive (those forms have become literary). See Subjunctive Expressing Anterior Action for the full sequence-of-tenses logic.

When the subject is unspecified: skip the que-clause

If there is no specific subject for the embedded action, French uses the impersonal expression with an infinitive, not a que-clause with the subjunctive.

The impersonal-with-infinitive form takes a de before the infinitive (il est important *de faire, il est dommage **de partir). This is a separate construction from the *que-clause version, and which one is right depends on whether there is a specific subject.

Common Mistakes

Mistake 1: Using the indicative after il est important que / il est nécessaire que.

Mistake 2: Using the subjunctive after il est évident que or il est certain que.

Mistake 3: Confusing il me semble que (indicative) with il semble que (subjunctive).

Mistake 4: Using que + subjunctive when there is no specific subject.

Mistake 5: Forgetting that il est probable que takes the indicative.

In casual contemporary speech, il est probable que is increasingly heard with the subjunctive, especially in Quebec French. The prescriptive rule (indicative) holds in formal writing, and is what is tested in language exams.

Key takeaways

• Impersonal expressions of necessity (il est important que, il est nécessaire que, il vaut mieux que), possibility (il est possible que, il se peut que), and emotion (il est dommage que, il est étrange que, il est juste que) all take the subjunctive in the embedded que-clause.
• Expressions that assert the embedded clause as fact — il est vrai que, il est certain que, il est évident que, il est probable que, il paraît que, il me semble que — take the indicative.
• The contrast il semble que (subjunctive) vs. il me semble que (indicative) is the model case of how a single pronoun shifts the mood. Il semble que hedges; il me semble que commits.
• When negated or questioned, assertion-expressions flip to the subjunctive: il n'est pas certain qu'il vienne, est-il certain qu'il vienne ?
• When there is no specific subject, use il est + adj. + de
  • infinitive: il est important de faire les courses. The que-clause + subjunctive is for specific subjects only.
• Tense matching in the embedded clause follows the relative timing of the action, not the tense of the matrix: subjonctif présent for simultaneous or future, subjonctif passé for completed.