A Practical Guide to Tout, Tous, Toute, and Toutes

1. 'Tout' as a Determiner (Adjective)

When used as a determiner or adjective, 'tout' means 'all' or 'the whole'. In this role, it must agree in gender and number with the noun it modifies. It usually comes before another determiner like an article (le, la, les) or a possessive adjective (mon, ma, mes).

• Masculine singular: `tout le temps` (all the time), `tout le gâteau` (the whole cake)
• Feminine singular: `toute la nuit` (all night), `toute ma famille` (my whole family)
• Masculine plural: `tous les jours` (every day), `tous mes amis` (all my friends)
• Feminine plural: `toutes les semaines` (every week), `toutes ses idées` (all her ideas)

In the singular and without another determiner, 'tout' can also mean 'every' or 'any'.

• `Tout homme doit être respecté.` (Every man must be respected.)
• `Toute aide est la bienvenue.` (Any help is welcome.)

2. 'Tout' as a Pronoun

As a pronoun, 'tout' can replace a noun or refer to an idea. It has two main forms.

First, there is the invariable neutral pronoun 'tout', which means 'everything'. It never changes.

• `J'ai tout compris.` (I understood everything.)
• `Tout va bien, merci.` (Everything is fine, thank you.)

Second, the pronouns 'tous' (masculine plural) and 'toutes' (feminine plural) mean 'all' or 'all of them'. They replace nouns and must agree in gender with what they are replacing.

• `Les étudiants sont arrivés ? Oui, ils sont tous là.` (Have the students arrived? Yes, they are all here.)
• `Tu as lu ces bandes dessinées ? Oui, je les ai toutes lues.` (Did you read these comic books? Yes, I read them all.)

3. The Pronunciation of 'Tous'

One of the most common points of confusion is when to pronounce the final 's' on 'tous'. The rule is simple and depends on whether it's a determiner or a pronoun.

When 'tous' is a determiner placed before a noun, the 's' is silent. It is pronounced /tu/.

• `Tous les enfants jouent.` (/tu lez‿ɑ̃fɑ̃/) (All the children are playing.)
• `J'appelle tous mes amis.` (/tu mez‿ami/) (I'm calling all my friends.)

When 'tous' is a pronoun, the 's' is pronounced. It sounds like /tus/.

• `Ils sont tous partis.` (/tus/) (They have all left.)
• `Je vous remercie tous.` (/tus/) (I thank you all.)

An easy tip: If 'tous' stands on its own or comes after the verb it refers to, you almost always pronounce the 's'.

4. 'Tout' as an Adverb

This is the trickiest use of 'tout'. As an adverb, it means 'very', 'entirely', or 'completely'. While most adverbs in French are invariable, 'tout' is a special case. The rules for its agreement are purely for phonetic reasons, to make the language flow more smoothly.

Rule 1: Before a masculine adjective (singular or plural), 'tout' is always invariable.

• `Mon fils est tout fier de son dessin.` (My son is very proud of his drawing.)
• `Ils sont tout étonnés de te voir ici.` (They are very surprised to see you here.)

Rule 2: Before a feminine adjective that starts with a vowel or a mute 'h', 'tout' is also invariable.

• `Elle est tout émue.` (She is very moved.)
• `Sa fille est tout heureuse.` (His daughter is very happy.)

Rule 3: Before a feminine adjective that starts with a consonant or an aspirated 'h', 'tout' agrees in gender and number. It becomes 'toute' (singular) or 'toutes' (plural).

• `La petite fille est toute seule.` (The little girl is all alone.)
• `Elles sont toutes petites.` (They are very small.)
• `Ces femmes sont toutes honteuses.` (These women are very ashamed.) Note: The 'h' in 'honteuse' is an aspirated 'h'.

You may sometimes hear or see agreement before a feminine adjective starting with a vowel, like `toute émue`. While traditional grammar prefers the invariable `tout`, this agreement is becoming more common and accepted, particularly in spoken French. For clarity, sticking to the phonetic rules outlined above is your safest bet.

Summary Table

5. Common Expressions with 'Tout'

'Tout' is also found in many fixed expressions that are essential for everyday conversation. It is best to learn these as complete phrases.

• `tout le monde`: everybody (always takes a singular verb)
• `tout à fait`: exactly, absolutely
• `tout de suite`: right away, immediately
• `pas du tout`: not at all
• `tout à l'heure`: in a little while, or, a little while ago
• `en tout cas`: in any case, anyway
• `tout d'un coup`: all of a sudden

6. Common Mistakes to Avoid

• Pronouncing the 's' in `tous les jours`. Remember, when `tous` is a determiner before a noun, the 's' is silent. It's /tu/, not /tus/.
• Forgetting agreement as a determiner. You must write `toute la classe` (feminine), not `tout la classe`.
• Confusing `tout le monde` (everybody) with an actual plural. Always use a singular verb: `Tout le monde est prêt.` (Everybody is ready.)
• Incorrectly agreeing the adverb 'tout'. For example, writing `ils sont touts contents`. The adverb 'tout' is invariable before a masculine adjective, so it's `ils sont tout contents`.

Ready to Check Your Understanding?

Quick self-check

1. How would you say 'I saw them all' (referring to a group of men)? And how is 'tous' pronounced?

   Show answer

   `Je les ai tous vus.` The final 's' in 'tous' is pronounced: /tus/.

2. Complete the sentence: `Elle est ___ surprise de le voir.` (She is very surprised to see him.)

   Show answer

   `tout`. As an adverb before a feminine adjective starting with a vowel, 'tout' is invariable.

3. Choose the correct form: `J'ai invité (tout/tous) mes cousins.`

   Show answer

   `tous`. As a determiner, it must agree with the masculine plural noun 'cousins'.

4. How would you say 'absolutely' in French using an expression with 'tout'?

   Show answer

   `Tout à fait.`

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