La motte d’argile est sur la girelle.

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

So:

• de + argile → d’argile

French does this very often to avoid awkward vowel clashes:

• de eau → d’eau
• de accord → d’accord

So motte d’argile is just the normal shortened form of motte de argile, which French does not keep in full.

In French, when one noun describes what something is made of, de is often used without an article.

So:

• une statue de pierre
• une table de bois
• une motte d’argile

Here, argile is naming the material of the lump, not referring to a separate specific quantity of clay.

If you said de l’argile, that would more strongly suggest some clay as a noun phrase of its own, rather than a material label attached to motte.

So une motte d’argile is the natural way to say a lump of clay.

Because both motte and girelle are feminine singular nouns.

So:

• la motte
• la girelle

In French, articles must agree with the noun’s gender and number.

Here is the breakdown:

• la = feminine singular the
• motte = feminine singular noun
• la = feminine singular the
• girelle = feminine singular noun

So the repeated la is just normal agreement.

Argile is also feminine.

By itself, you would usually say:

• l’argile

because it begins with a vowel sound.

For example:

• L’argile est humide.

But in motte d’argile, there is no article before argile because it follows de in a material/type expression.

Because this is the standard French sentence order:

• Subject: La motte d’argile
• Verb: est
• Location phrase: sur la girelle

This matches normal English order quite closely:

• The lump of clay
  • is
    • on the wheel/head

So there is nothing unusual here. It is a very straightforward declarative sentence.

Sur means on or on top of. It is used when something is physically resting on a surface.

So in this sentence, the clay lump is located on the pottery wheel surface / wheel head / turntable, which makes sur the right preposition.

Compare:

• sur la table = on the table
• sur le sol = on the floor
• sur la girelle = on the wheel head / turntable

A learner might wonder about dessus, but dessus usually works differently. You normally say:

• Il est dessus = It is on it / on top of it

But before a noun, French normally uses sur:

• sur la girelle, not dessus la girelle

Motte means a lump, clump, or mass of something.

In this context, une motte d’argile is a natural way to refer to a lump of clay before or during shaping.

It is a concrete noun, not a verb or adjective.

You may also see other words in related contexts, such as:

• boule d’argile = ball of clay
• bloc d’argile = block of clay
• pâte d’argile = clay body / clay paste, depending on context

So motte emphasizes the clay as a lump or mass.

Not especially. Girelle is a fairly specialized pottery term.

In a ceramics context, it refers to the rotating plate or wheel head used in throwing or shaping clay. Depending on the exact setup, English equivalents may vary, which is why it can feel unfamiliar.

A general French speaker might more readily know broader expressions like:

• tour de potier = potter’s wheel

But in workshop or technical pottery language, girelle is perfectly normal.

So yes, it is correct, but it is more specialized vocabulary than basic everyday French.

A careful pronunciation would be roughly:

la mɔt darʒil ɛ syʁ la ʒiʁɛl

A few useful points:

• motte sounds like mott
• d’argile links smoothly because of the elision
• g in argile and girelle sounds like the s in measure
• r is the French r, produced farther back in the mouth
• est is pronounced è here

Very roughly for an English speaker, you could think:

la mot dar-zheel eh sewr la zhee-rel

That is only an approximation, but it helps as a starting point.

Yes. That would also be correct, but it changes the focus.

• La motte d’argile est sur la girelle.
  This presents the lump of clay as the topic and tells you where it is.

• Il y a une motte d’argile sur la girelle.
  This means There is a lump of clay on the wheel head and focuses more on the existence/presence of the lump.

So both are grammatical, but they are used in slightly different situations.

Yes. Once the noun is already known from context, you could replace it with elle, because motte is feminine.

So:

• La motte d’argile est sur la girelle.
• Elle est sur la girelle.

Here, elle refers back to la motte.

French pronouns usually agree with the gender and number of the noun they replace, so the feminine pronoun is the natural choice.