Le sable est fin au bord de la mer.

In French, nouns usually need an article. So le sable means the sand in a general sense. French often uses the definite article where English might use no article at all.

Here, le sable does not necessarily mean one specific pile of sand. It can mean sand in general, as a substance.

Est is the he/she/it is form of the verb être (to be).

The subject is le sable, which is singular, so French uses est:

• le sable est = the sand is

This is the normal way to link the subject to an adjective such as fin.

Here, fin means fine in the sense of not coarse or soft and made of very small grains.

So le sable est fin means the sand has a fine texture.

Be careful: fin can have other meanings in other contexts, such as end or clever/subtle, but here it is simply describing texture.

Because fin is being used as a predicate adjective, not directly attached to the noun.

Compare:

• Le sable est fin = The sand is fine
• Le fin sable would not be the normal way to say this

In this sentence, French works just like English: subject + to be + adjective.

Because au is the contraction of à + le.

• à + le = au

So:

• au bord de la mer = literally at the edge of the sea

The full underlying structure is:

• au bord de la mer
• = à le bord de la mer
• but French contracts à le to au

Also note that à bord de is a different expression that usually means on board a vehicle, ship, or plane. So au bord de la mer is the correct phrase here.

Au bord de means at the edge of, by, or along.

In this sentence:

• au bord de la mer = by the sea / at the seaside / on the seashore

It refers to the area right next to the sea.

Because mer is a feminine noun:

• la mer = the sea

The contraction du only happens with de + le:

• de + le = du

But with a feminine noun, there is no contraction:

• de + la = de la

So:

• au bord de la mer is correct

Yes, mer is a feminine noun in standard French, so it takes feminine articles and adjectives when needed:

• la mer
• une mer calme

This is something English speakers simply have to memorize, since English nouns do not usually have grammatical gender.

A careful pronunciation is roughly:

Le sable est fin au bord de la mer
luh sahbl ay fan oh bor duh lah mair

A few useful points:

• est is pronounced like é
• fin is nasal; the n is not pronounced like a full English n
• bord has a silent final d
• mer sounds like mair

In natural speech, French flows smoothly, so try to say it as one rhythm group rather than word by word.

Usually, not much mandatory liaison happens here.

A few notes:

• le sable: no liaison
• sable est: normally no liaison
• est fin: no liaison
• bord de: no liaison
• la mer: no liaison

So this sentence is fairly straightforward to pronounce without worrying about many liaisons.

No. Sable is a masculine noun, so it takes masculine articles:

• le sable
• un sable

Not:

• la sable

The adjective fin also matches that masculine singular noun form here.

Because sable is masculine singular.

French adjectives often change form to agree with the noun:

• masculine singular: fin
• feminine singular: fine

Since the noun is le sable and sable is masculine, the correct form is fin.

If the noun were feminine, you would use fine.

Yes. Even if the meaning is already given, it is useful to know that French and English do not always match word for word. Depending on context, this could sound natural in English as:

• The sand is fine by the sea
• The sand is fine at the seaside
• The sand is fine along the seashore
• The sand is fine at the water’s edge

The French structure stays the same, but English has several natural ways to express au bord de la mer.