Ce gâteau est bon, mais il est trop sucré.

French demonstratives must match the noun’s gender and number.

• ce = masculine singular before a consonant
• cet = masculine singular before a vowel or silent h
• cette = feminine singular
• ces = plural

Since gâteau is masculine singular and starts with a consonant sound, ce gâteau is correct.

In French, every noun has a grammatical gender, and you usually have to learn it with the word.

A good habit is to learn nouns with an article:

• un gâteau = a cake
• une tarte = a pie/tart

Because we say un gâteau, we know gâteau is masculine.

Both bon and sucré are adjectives, and they must agree with gâteau.

Since gâteau is:

• masculine
• singular

the adjectives stay in their masculine singular forms:

• bon
• sucré

If the noun were feminine, you would usually add -e:

• Cette tarte est bonne.
• Elle est trop sucrée.

French often uses a subject pronoun to avoid repeating the noun, just like English uses it.

So:

• Ce gâteau est bon = This cake is good
• mais il est trop sucré = but it is too sweet

Here, il refers back to ce gâteau.

After introducing the noun ce gâteau, French normally uses the regular pronoun il to refer back to it.

• ce is a demonstrative determiner here, used before the noun: ce gâteau
• il is a subject pronoun, used instead of repeating the noun

Also, ce est is not the normal form in French. Before est, ce becomes c’, which gives c’est.

Yes, you could, but it is slightly different in feel.

• Ce gâteau est bon is more directly about the cake
• C’est bon is more general: It’s good

So:

• Ce gâteau est bon, mais il est trop sucré sounds more explicit and clearly refers to the cake.
• C’est bon, mais c’est trop sucré is possible in conversation, especially when the context is obvious.

Trop means too much or too, depending on the structure.

In trop sucré, it means too sweet.

So:

• très sucré = very sweet
• trop sucré = too sweet, more than is pleasant or acceptable

That is an important difference:

• très is just strong
• trop suggests excess

Because they are predicate adjectives. They describe the subject through the verb être.

Structure:

• subject + être
  • adjective

So:

• Ce gâteau est bon
• il est trop sucré

This is similar to English:

• This cake is good
• it is too sweet

The adjectives are not directly placed next to the noun here; they come after the verb est.

The comma separates two linked clauses:

• Ce gâteau est bon
• mais il est trop sucré

It works much like English punctuation before but. In French, the comma is very common here because it makes the contrast clearer and the sentence easier to read.

A natural approximate pronunciation is:

suh gah-toh eh bohn, meh eel eh troh soo-kray

A few useful notes:

• Ce sounds roughly like suh
• gâteau sounds like gah-toh
• est is usually pronounced like eh
• bon has a nasal vowel, so the n is not fully pronounced like an English n
• mais sounds like meh
• trop sounds like troh
• sucré sounds like soo-kray

In careful speech, some speakers may make a liaison in places, but for a learner, the version above is a good starting point.

Sucré often means sweet in the sense of containing sugar or tasting sugary.

So trop sucré can mean:

• too sweet
• too sugary

In food contexts, it often suggests that there is more sugar than you would like. That is why it fits very naturally with cake.

Yes. A few common alternatives are:

• délicieux = delicious
• excellent = excellent
• savoureux = tasty
• pas mal = not bad

Examples:

• Ce gâteau est délicieux, mais il est trop sucré.
• Ce gâteau est excellent, mais il est trop sucré.

Just remember that the adjective still has to agree with the noun if needed.