L’infirmière parle aux patients dans la salle d’attente.

Because la becomes l’ before a word that starts with a vowel sound.
Infirmière starts with i, so French uses elision:

• la infirmière → incorrect
• l’infirmière → correct

This is very common in French:

• l’école
• l’hôtel
• l’amie

Infirmière means nurse, and here it is the feminine singular form. The masculine form is infirmier.

So:

• un infirmier = a male nurse
• une infirmière = a female nurse

The ending changes because French nouns for people often show grammatical gender.

The verb parler usually takes the preposition à when it means to speak to someone.

So in French, you say:

• parler à quelqu’un = to speak to someone

That is why the sentence has:

• parle à les patients → which contracts to parle aux patients

You do not say parler quelqu’un for speak to someone.

Aux is the contraction of à + les.

So:

• à + les = aux

In this sentence:

• aux patients = to the patients

Other useful contractions:

• à + le = au
• de + le = du
• de + les = des

Examples:

• au médecin = to the doctor
• aux patients = to the patients

Because the sentence is talking about more than one patient.

You can see the plural in two places:

• les = the (plural)
• patients = patients, with -s

So:

• au patient = to the patient
• aux patients = to the patients

Literally, it means in the waiting room.

Breakdown:

• dans = in
• la salle = the room
• d’attente = of waiting

So la salle d’attente is literally the room of waiting, but in natural English that is the waiting room.

Because de shortens to d’ before a vowel sound. This is called elision.

So:

• de attente → incorrect
• d’attente → correct

This is the same pattern as:

• l’hôpital
• j’aime
• c’est l’heure

It most naturally gives the location of the action: the speaking is happening in the waiting room.

In practice, that usually also means the nurse is there too. French, like English, often leaves this slightly flexible unless more context is added.

So the phrase works like an adverbial phrase of place:

• The nurse speaks to the patients in the waiting room.

Actually, the word order here is quite close to English:

• L’infirmière = The nurse
• parle = speaks / is speaking
• aux patients = to the patients
• dans la salle d’attente = in the waiting room

So French is following a normal pattern:

subject + verb + indirect object/prepositional phrase + place

This is very common and natural in French.

A simple pronunciation guide is:

lan-feer-MYEHR parl oh pah-SYAN dahn la sal da-TAHNT

A few helpful points:

• L’infirmière: the r is French, and ière sounds roughly like yehr
• aux sounds like oh
• patients is pronounced roughly pah-syan; the final -ts is not pronounced
• dans has a nasal vowel, so it is not pronounced like English dance
• attente sounds roughly ah-tahnt

It can mean either, depending on context.

French present tense often covers both:

• The nurse speaks to the patients in the waiting room.
• The nurse is speaking to the patients in the waiting room.

French does not always separate simple present and present progressive the way English does.

Usually, no, if you mean speaking to the patients.

• parler à quelqu’un = to speak to someone
• parler avec quelqu’un = to speak with someone

Both can be correct in some contexts, but they are not exactly the same.

So:

• L’infirmière parle aux patients = The nurse is speaking to the patients
• L’infirmière parle avec les patients = The nurse is speaking with the patients

The second version can suggest more of a two-way interaction. The original sentence is perfectly standard.

French often uses articles where English may or may not use them, but here aux already includes the idea of to the.

Remember:

• aux = à + les = to the

So aux patients already contains the definite article les.

That means the phrase is not just to patients, but specifically to the patients.