Non dimenticare il punto alla fine della frase.

Non is the standard Italian word for not. It usually goes directly before the verb it negates.

So:

• dimenticare = to forget
• non dimenticare = don’t forget

In this sentence, Non negates the command, so the whole phrase means Don’t forget...

This is because Italian forms the negative informal command (the tu command) with non + infinitive.

So:

• Dimentica! = Forget!
• Non dimenticare! = Don’t forget!

This is a very important pattern:

• Mangia! = Eat!
• Non mangiare! = Don’t eat!
• Parla! = Speak!
• Non parlare! = Don’t speak!

So even though it may look unusual to an English speaker, non + infinitive is exactly what you expect for a negative command addressed to you informally.

Yes. Non dimenticare is the informal singular command, used when speaking to one person with tu.

If you wanted other versions, they would be different:

• Non dimenticate... = Don’t forget... (to more than one person, or formal plural)
• Non dimentichi... = Don’t forget... (formal singular, Lei)

So the given sentence is the equivalent of talking to one person casually: Don’t forget...

Il punto literally means the point or the dot, but in grammar and punctuation it means the period / full stop.

So in this sentence:

• il punto = the period (American English)
• il punto = the full stop (British English)

Italian often uses the same word, punto, for punctuation marks involving a dot.

Italian uses definite articles more often than English does. Here, il punto refers to the punctuation mark that should appear at the end of the sentence, so Italian naturally includes the article.

Compare:

• il punto = the period
• la frase = the sentence

Even where English might sometimes sound fine without an article in certain contexts, Italian often prefers one.

Alla fine means at the end.

Alla is a contraction of:

• a = at / to
• la = the

So:

• a + la = alla

That gives:

• alla fine = at the end

This kind of contraction is very common in Italian:

• a + il = al
• a + lo = allo
• a + i = ai
• a + gli = agli
• a + le = alle

Della frase means of the sentence.

Della is a contraction of:

• di = of
• la = the

So:

• di + la = della

The phrase alla fine della frase literally means at the end of the sentence.

Again, Italian commonly uses articles in places where English also does, but the structure is more visibly built with preposition + article:

• della frase = of the sentence

You can tell from the articles:

• la fine
• la frase

That means both nouns are feminine singular.

As a result:

• alla fine uses la
• della frase uses la

This is helpful because the article changes depending on the gender and number of the noun. A learner should memorize nouns together with their article:

• la fine
• la frase
• il punto

A close literal breakdown is:

• Non = not
• dimenticare = forget
• il punto = the period
• alla fine = at the end
• della frase = of the sentence

So the structure is essentially:

Not forget the period at the end of the sentence.

In natural English, of course, that becomes:

Don’t forget the period at the end of the sentence.

Yes, in many contexts you can. Scordare and dimenticare can both relate to forgetting.

For example:

• Non dimenticare il punto...
• Non scordare il punto...

However, dimenticare is generally the more standard and neutral choice in many learning materials. Scordare is common too, but dimenticare is often the safest word to learn first.

The given word order is the most natural and standard:

Non dimenticare il punto alla fine della frase.

Italian word order is somewhat flexible, but this version is clear and idiomatic. A learner should treat it as the normal model.

For example, moving things around too much can sound marked or unnatural unless there is a special emphasis. So for everyday use, keep:

• Non dimenticare
  • thing to remember + location/detail

In this case:

• Non dimenticare
• il punto
• alla fine della frase

It sounds completely natural. It could be said by a teacher, editor, parent, or anyone reminding someone about punctuation.

The tone is straightforward and instructional:

• Non dimenticare il punto alla fine della frase.

It is not overly formal, not slangy, and not strange. It is a very normal kind of reminder.