À vs De in French

À and de are often introduced as “to” and “from,” but those labels collapse quickly. French uses them for places, possession, ingredients, purpose, and complements selected by verbs and adjectives. There is no single English test that solves every case. The practical method is to identify the relationship, then learn frequent governing words together with their preposition.

Quick answer: Start with direction and source

For movement, à commonly points toward a city or destination, while de points away from a source. Countries add article rules: en France, au Canada, aux États-Unis, but de France, du Canada, and des États-Unis. These patterns belong to place grammar, not a universal definition of either preposition. Nouns and adjectives also govern complements. Être prêt à agir points toward an action, while être fier de son travail links pride to its source. Une invitation à dîner describes the proposed activity; la fin du dîner identifies a relationship between two nouns. These combinations reward phrase-level learning. A vocabulary card containing only the isolated adjective or noun leaves out the information needed to build a sentence.

Frequent relationships expressed by à and de

Relationship	Typical form	French example	Meaning
destination	aller à	Je vais à la gare.	I am going to the station.
source	venir de	Je viens de la gare.	I am coming from the station.
recipient	donner à	Il donne le livre à Zoé.	He gives the book to Zoé.
belonging	le nom de	Le nom de la rue	the name of the street
function	une tasse à	une tasse à café	a coffee cup
content	une tasse de	une tasse de café	a cup of coffee

Nous allons à Bordeaux. → We are going to Bordeaux.

Elle revient de Bordeaux. → She is coming back from Bordeaux.

Ils partent au Canada. → They are leaving for Canada.

Core difference: À can mark a recipient or target

With communication, transfer, and attention, à often introduces the person or target. Pronouns may replace the phrase: parler à Léa becomes lui parler. The exact construction still depends on the verb, so compare parler à quelqu’un with parler de quelque chose. When two constructions are possible, meaning may shift rather than grammar becoming optional. Continuer à travailler presents continuation, while continuer de travailler is also accepted with little practical difference; décider de partir, however, does not freely switch. Read several natural examples before generalising. In writing, verify an unfamiliar construction in a reliable dictionary and record the whole phrase with one short example.

J’écris à mon professeur. → I am writing to my teacher.

Elle répond à la question. → She answers the question.

Nous pensons à nos vacances. → We are thinking about our holiday.

De can mark origin, possession, or content

De connects something to its source, owner, material, subject, or content. English may use “from,” “of,” a possessive apostrophe, or no preposition at all. Notice the contrast between a container’s function with à and what is actually inside it with de.

C’est le vélo de mon frère. → It is my brother’s bicycle.

Une table de bois occupait la pièce. → A wooden table filled the room.

Nous parlons de ce problème. → We are talking about this problem.

Verb plus infinitive patterns must be learned

Some verbs take à before an infinitive, others take de, and some take no preposition. Commencer à, réussir à, and aider à contrast with arrêter de, décider de, and essayer de. The choice is lexical: store the verb and preposition together rather than deriving it from English “to.”

Elle commence à comprendre. → She is beginning to understand.

Il essaie de rester calme. → He is trying to stay calm.

Nous devons partir. → We must leave.
Devoir takes the infinitive directly.

Contractions are grammar, not optional spelling

À plus le becomes au and à plus les becomes aux. De plus le becomes du and de plus les becomes des. Feminine la and singular l’ remain separate after à and de. These contractions apply to articles, not every sequence of letters.

On va au marché. → We are going to the market.

Elle parle aux voisins. → She is speaking to the neighbours.

Il revient du bureau. → He is coming back from the office.

La porte des bureaux est fermée. → The office door is closed.

Common mistakes caused by English

Do not insert à simply because English has “to” before an infinitive. Do not omit de in fixed phrases such as avoir besoin de. Avoid translating possession with an English-style apostrophe. Finally, distinguish parler à, addressing someone, from parler de, discussing a subject.

J’ai besoin de repos. → I need rest.

Je parle à Clara de notre projet. → I am talking to Clara about our project.

A memory tip: arrows and links

Use an arrow toward a destination or recipient as the first image for à, and a link back to source or belonging for de. Then mark verb constructions as vocabulary chunks. The images provide orientation; the stored chunks handle cases that are not predictable.

Practice with minimal contrasts

Build pairs that preserve the noun while changing the relationship: tasse à café versus tasse de café, parler à Paul versus parler de Paul, aller au bureau versus revenir du bureau. Explain the relationship aloud before choosing the preposition.

C’est une machine à laver. → It is a washing machine.

La machine de Léa est neuve. → Léa’s machine is new.

Questions about à and de

The answers below address infinitives, place names, contractions, and constructions where both prepositions are possible with a change of meaning.