Verb drill

French obligation drill: change il faut into tu dois or vous devez

Rewrite positive rules and prohibitions with tu dois or vous devez. Twelve French transformations keep the instruction, person and negative meaning clear.

In short

A general rule with il faut becomes tu dois for one familiar listener or vous devez for a group or a listener addressed politely. A prohibition with il ne faut pas becomes tu ne dois pas or vous ne devez pas. Keep the infinitive and the rule’s meaning.

Yellow the idea to rememberBlue French to learn

A newcomer introducing themselves to a small circle of adults in a French community room.
Tu dois te présenter addresses the instruction to one person. Illustration: Atelier
Study first: obligation or prohibition
General ruleOne friendA group
Il faut patienter.Tu dois patienter.Vous devez patienter.
Il ne faut pas insister.Tu ne dois pas insister.Vous ne devez pas insister.

The il in il faut does not name a person. Choosing tu or vous names the listener who must act. In this exercise, the negative rules mean “must not”: an action is prohibited. “You don’t have to” has a different meaning, often expressed by tu n’es pas obligé de or vous n’êtes pas obligés de.

Il faut se présenter. → Tu dois te présenter.

You have to introduce yourself. → You must introduce yourself.

The reflexive pronoun changes to match the listener.

Rewrite the complete rule using the listener given. Keep every time expression. With a reflexive infinitive, use te after tu dois and vous after vous devez. Before a vowel, te becomes t’, as in t’inscrire.

1 · Address one friend with tu

  1. Il faut arriver à l’heure. → (Begin Tu dois.)
  2. Il faut prévenir avant midi. → (Keep the deadline.)
  3. Il ne faut pas parler pendant l’exercice. → (This is a prohibition.)
  4. Il faut se présenter au début. → (Change the reflexive pronoun.)
  5. Il ne faut pas s’absenter sans prévenir. → (Use t’ before a vowel.)
  6. Il faut répondre avant vendredi. → (Keep avant vendredi.)

2 · Address a group with vous

  1. Il faut respecter les autres. → (Begin Vous devez.)
  2. Il ne faut pas interrompre. → (Keep ne … pas around devez.)
  3. Il faut se préparer avant de commencer. → (The second vous is reflexive.)
  4. Il ne faut pas arriver après neuf heures. → (Keep the prohibited arrival time.)
  5. Il faut s’inscrire avant lundi. → (Vous stays complete before inscrire.)
  6. Il ne faut pas se moquer des autres. → (Keep des autres.)

Question 1No account needed
Which sentence tells a friend that interrupting is prohibited?

Choose one answer.

Answer and explanation

Tu ne dois pas interrompre.. Tu ne dois pas gives a prohibition. Tu n’es pas obligé de removes an obligation.

Question 2No account needed
Choose the instruction addressed to a group.

Choose one answer.

Answer and explanation

Vous devez vous présenter.. The subject vous takes devez, and the reflexive infinitive uses vous too.

Question 3No account needed
Where does the negative go?

Choose one answer.

Answer and explanation

Vous ne devez pas répondre.. Ne … pas surrounds the conjugated modal devez in this instruction.