Le conseiller bancaire explique les frais bancaires.

In French, most descriptive adjectives come after the noun, not before it. So:

• un conseiller bancaire = a banking advisor / bank advisor
• des frais bancaires = banking fees / bank fees

This is one of the basic word-order differences between English and French. English usually puts adjectives before the noun, but French often puts them after.

Conseiller means advisor or adviser.
Bancaire means banking or related to banks.

So un conseiller bancaire is a bank advisor, banking advisor, or bank adviser.

It refers to a person whose role is to advise customers about banking matters. It is a bit more specific than just un banquier, which means banker.

French adjectives must agree with the noun they describe in number and sometimes gender.

• conseiller is singular, so the adjective is singular: bancaire
• frais is plural, so the adjective is plural: bancaires

So:

• un conseiller bancaire
• des frais bancaires

This is normal adjective agreement in French.

Here, frais means fees or charges, and in this meaning it is normally used in the plural.

So:

• les frais bancaires = bank fees / banking charges

This is similar to English, where we also often talk about fees in the plural.

Be careful: frais can also be an adjective meaning fresh or cool, but that is a different word use.

Les is the definite article: the.
Des is the indefinite plural article: some.

So:

• les frais bancaires = the bank fees
• des frais bancaires = some bank fees / bank fees in general

This sentence uses les, so it is talking about specific fees, not just fees in a vague way.

Explique is the present tense of expliquer.

It is the third-person singular form, used with il, elle, or any singular noun like le conseiller bancaire.

Conjugation of expliquer in the present:

• j’explique
• tu expliques
• il/elle explique
• nous expliquons
• vous expliquez
• ils/elles expliquent

So Le conseiller bancaire explique... means The bank advisor explains...

Because expliquer can take a direct object in French, just like explain can in English:

• expliquer quelque chose = to explain something

Here, les frais bancaires is the thing being explained, so it comes directly after the verb.

If you want to add the person receiving the explanation, French uses à:

• Le conseiller bancaire explique les frais bancaires au client.
• The bank advisor explains the bank fees to the customer.

So:

• expliquer quelque chose
• expliquer quelque chose à quelqu’un

Yes, the basic sentence structure is the same:

• Le conseiller bancaire = subject
• explique = verb
• les frais bancaires = object

So it follows a standard subject + verb + object pattern.

The main difference for an English speaker is that the adjective bancaire/bancaires comes after the noun.

Yes, grammatically that is correct.

• Le banquier = the banker
• Le conseiller bancaire = the bank advisor

The difference is mainly one of meaning and nuance:

• banquier is a broader word: banker
• conseiller bancaire is more specific: bank advisor / customer advisor at a bank

So the original sentence sounds a bit more precise about the person’s role.

Explique is pronounced roughly like eks-pleek.

A few pronunciation notes:

• ex- sounds like eks
• -plique sounds like pleek
• the final e is not pronounced

So:

• explique ≈ eks-pleek

In the full sentence, French pronunciation flows smoothly from word to word, but there is no special mandatory liaison here that changes the basic sound of explique.

Le means the. It shows that we are talking about a specific advisor, or about the role in a definite way.

• Le conseiller bancaire = the bank advisor
• Un conseiller bancaire = a bank advisor

So if you changed the sentence to Un conseiller bancaire explique les frais bancaires, it would mean A bank advisor explains the bank fees.

Both are possible, but le and un do not mean the same thing.