S’il y a encore un bug demain, je noterai chaque mot-clé dans mon cahier.

S’il is the normal contraction of si + il.

So:

• si il y a → s’il y a

This contraction is required in standard French. It works similarly with ils:

• s’ils arrivent = if they arrive

A useful detail: si only contracts this way before il and ils, not before every vowel sound.

Il y a is the standard French expression for there is or there are.

In this sentence:

• il y a un bug = there is a bug

Literally, it does not map neatly onto natural English word-for-word, but you can think of it as a fixed expression meaning that something exists or is present.

Examples:

• Il y a un problème. = There is a problem.
• Il y a deux fichiers. = There are two files.

So S’il y a encore un bug demain means If there is still / yet another bug tomorrow...

Here encore suggests still or yet again, depending on context.

In:

• S’il y a encore un bug demain...

it implies that the bug situation is continuing or repeating. A natural English idea would be:

• If there’s still a bug tomorrow...
• If there’s yet another bug tomorrow...

French encore is flexible, and its exact translation depends on context. It can mean:

• still
• again
• another / yet another

This is a very common French pattern for real future conditions:

• si
  • present tense
• main clause in the future

So French says:

• S’il y a encore un bug demain, je noterai...

not:

• Si il y aura... ❌

This is one of the biggest differences from English. English often uses present + future too:

• If there is a bug tomorrow, I will write...

French does the same thing.

So after si meaning if, do not use the future tense for this kind of sentence.

Noterai is the simple future form of noter (to note down, to write down).

It matches je:

• je noterai = I will note down / I will write down

This form is built from the infinitive noter + the future ending for je, which is -ai:

• noter
  • ai → noterai

Because the action will happen in the future, if the condition is met tomorrow, the future tense is the natural choice.

No. In standard French, the ending -ai in the simple future is usually pronounced ay /e/, not like English eye.

So:

• je noterai sounds roughly like zhuh noh-tuh-ray

A few pronunciation notes:

• je = soft zh sound at the start
• noterai ends with an ay sound
• the final -ai is not pronounced like I

This is important because English speakers often want to say no-tuh-rye, which would be incorrect.

Because chaque means each, and it is followed by a singular noun.

So:

• chaque mot-clé = each keyword

Not:

• chaques mots-clés ❌

Rules to remember:

• chaque does not take -s
• the noun after chaque is singular

Compare:

• chaque mot-clé = each keyword
• tous les mots-clés = all the keywords

Mot-clé is a compound noun meaning keyword.

In the singular:

• un mot-clé

In the plural:

• des mots-clés

Both parts change in the plural here:

• mot → mots
• clé → clés

In your sentence it stays singular because of chaque:

• chaque mot-clé

Yes. Bug is very commonly used in French, especially in computing and tech contexts.

It is usually masculine:

• un bug

So the sentence correctly says:

• encore un bug

French also has more formal or less Anglicized alternatives in some contexts, but bug is extremely common in everyday technical French.

Dans mon cahier means in my notebook, and it is the most natural choice here if you mean writing inside it, on its pages.

• dans mon cahier = in my notebook

If you said sur mon cahier, that would usually suggest on top of the notebook, not inside it as writing content.

So:

• Je noterai chaque mot-clé dans mon cahier. = I’ll write each keyword down in my notebook.

That is the normal phrasing.

Yes, demain could move, but its current position is very natural.

Here:

• S’il y a encore un bug demain, je noterai...

demain belongs to the if clause and tells you when the possible bug situation happens.

French adverbs of time like demain are fairly flexible. For example, you could also hear:

• Si demain il y a encore un bug, je noterai...

That said, the original version is simple and idiomatic.

It follows this structure:

• Si
  • present tense, future tense

More specifically:

• S’il y a encore un bug demain = if there is still / another bug tomorrow
• je noterai chaque mot-clé dans mon cahier = I will write down each keyword in my notebook

This pattern is used for real or likely future situations.

A similar example:

• S’il pleut demain, je resterai chez moi.
• If it rains tomorrow, I’ll stay home.

So your sentence is a very standard example of a future real-condition sentence in French.