Prima dell’interrogazione, sottolineo le date importanti ed evidenzio i nomi in rosso.

Because dell’ is the contraction of di + la.

• la interrogazione → l’interrogazione (because the noun starts with a vowel)
• di + l’interrogazione → dell’interrogazione

So prima dell’interrogazione means before the interrogation/oral test.

In Italian, after prima di with a noun, you often use di + article:

• prima della lezione
• prima del pranzo
• prima dell’esame

With a noun, Italian normally uses prima di + article + noun.

So:

• prima dell’interrogazione = before the oral test
• prima della cena = before dinner
• prima del film = before the movie

By contrast, prima di can also be followed by an infinitive:

• prima di studiare = before studying
• prima di uscire = before going out

So the pattern here is:

• prima di + noun → usually becomes prima del / della / dell’ / dei, etc.
• prima di + infinitive → no article

In a school context, interrogazione usually means an oral test, oral exam, or being called up to answer questions in class.

Although it looks like English interrogation, in everyday Italian school language it usually does not mean a police-style interrogation.

So in this sentence, interrogazione is most naturally understood as a school oral test.

Both are first person singular, present indicative:

• sottolineo = I underline
• evidenzio = I highlight

They come from:

• sottolineare = to underline
• evidenziare = to highlight, emphasize

This is the standard io form in the present tense.

Examples:

• io sottolineo
• io evidenzio
• io studio
• io leggo

Italian often drops the subject pronoun io, because the verb ending already shows who is doing the action.

Italian usually omits subject pronouns when they are not needed.

So:

• sottolineo already means I underline
• evidenzio already means I highlight

Adding io is possible, but it is usually only used for emphasis, contrast, or clarity:

• Io sottolineo le date, tu no. = I underline the dates, you don’t.

In a normal sentence, leaving io out sounds more natural.

Ed is a variant of e meaning and.

It is often used before a word beginning with e to avoid the repetition of the same sound:

• e evidenzio → possible, but less elegant
• ed evidenzio → smoother and more natural in careful Italian

This also happens in other cases:

• ed è
• ed ecco

So ed is not a different word in meaning; it is just a stylistic/phonetically smoother form of e.

They are similar, but not identical.

• sottolineare = to underline
  You draw a line under the word or phrase.

• evidenziare = to highlight or emphasize
  Often this means using a highlighter marker, or making something stand out.

In the sentence:

• sottolineo le date importanti = I underline the important dates
• evidenzio i nomi in rosso = I highlight the names in red

So the sentence uses two different study actions.

In Italian, adjectives usually come after the noun.

So:

• le date importanti = the important dates
• i nomi italiani = the Italian names
• un libro interessante = an interesting book

Sometimes adjectives can come before the noun, but that often changes the tone or emphasis. For a basic, neutral sentence, noun + adjective is the normal pattern.

So le date importanti is the standard order.

Italian uses definite articles more often than English.

Here:

• le date = the dates
• i nomi = the names

Even where English might sometimes say simply important dates or names, Italian often prefers the article when talking about specific things in context.

Also, the articles must agree with the nouns:

• data is feminine singular → la data
• plural → le date
• nome is masculine singular → il nome
• plural → i nomi

Italian normally uses in + color to mean in red, in blue, etc., when describing how something is written, marked, or shown.

So:

• in rosso = in red
• in blu = in blue
• in verde = in green

Examples:

• scrivere in nero = to write in black
• segnare in rosso = to mark in red

So evidenzio i nomi in rosso means the names are highlighted using the color red.

It mainly describes how the names are highlighted: they are highlighted in red.

So the idea is:

• I highlight the names
• using red / in red

In practice, English and Italian both understand this as describing the result on the names, but grammatically it works like an adverbial phrase of manner/color.

This is a very normal Italian word order:

• verb
  • object
• sottolineo
  • le date importanti
• evidenzio
  • i nomi
• then in rosso adds extra information

Italian word order is often flexible, but this sentence follows the basic, neutral order:

1. time expression: Prima dell’interrogazione
2. first action: sottolineo le date importanti
3. second action: ed evidenzio i nomi in rosso

It sounds natural and straightforward.

Yes. Italian allows some flexibility.

You could also say:

• Sottolineo le date importanti ed evidenzio i nomi in rosso prima dell’interrogazione.

This still means the same thing: Before the oral test, I underline the important dates and highlight the names in red.

Putting Prima dell’interrogazione at the beginning gives it a little more emphasis as the time frame.

Italian often uses the present tense for:

• habitual actions
• routines
• general statements
• actions described vividly

So sottolineo and evidenzio can mean:

• I underline / I highlight as a habit
• I usually underline / I usually highlight
• or simply I underline / highlight in this situation

This is very common in both Italian and English. Context tells you whether it is a routine or a one-time action.

The noun data in Italian can mean date in the calendar sense. In this sentence, le date importanti most naturally means important dates, especially in a study context.

If someone meant appointments, Italian would more likely use words such as:

• appuntamenti
• impegni

Because the sentence is about studying before an interrogazione, le date importanti clearly points to historical dates, deadlines, or other dates to memorize.

Yes, the z in evidenzio is pronounced like the zz sound in pizza.

Very roughly:

• evidenzio ≈ eh-vee-den-tsyo

Also note:

• gli is not present here, so pronunciation is relatively straightforward
• the final -io is part of the verb ending for I

You do not pronounce it like English z in zero.