La notizia sorprende tutti.

Because Italian normally uses an article more often than English does.

Here, la notizia means the news or the piece of news.
If you said just notizia by itself, it would usually sound incomplete in a normal statement.

Also, notizia is a feminine singular noun, so it takes la:

• la notizia = the news / the piece of news

Not exactly in every context.

In Italian:

• notizia = a piece of news, a news item, a report
• notizie = news in general, news items

So La notizia sorprende tutti often feels like:

• The news surprises everyone
• or more literally, The piece of news surprises everyone

This can be a little tricky for English speakers because news in English is uncountable, while notizia in Italian is a normal countable noun.

Sorprende is the third-person singular present tense of sorprendere, which means to surprise.

The subject is la notizia, which is singular, so the verb must also be singular:

• la notizia sorprende = the news surprises

A quick pattern:

• io sorprendo = I surprise
• tu sorprendi = you surprise
• lui/lei sorprende = he/she/it surprises

So in this sentence, sorprende agrees with la notizia.

Tutti here means everyone or all people.

It is being used as a pronoun, not as an adjective. In other words, it stands on its own:

• sorprende tutti = surprises everyone

A useful comparison:

• tutti = everyone / all of them / all people
• tutte = all of them, if the group is entirely feminine

Italian often uses the masculine plural form tutti for mixed groups or for people in general.

Because tutti is the direct object of sorprende.

In Italian, direct objects normally do not take a preposition:

• La notizia sorprende tutti.

English speakers sometimes expect something like to everyone, but Italian uses the verb sorprendere directly on the object:

• surprise someone
• sorprendere qualcuno

So:

• sorprende tutti = surprises everyone

There are two main clues:

1. Verb agreement
   The verb is sorprende, singular, matching la notizia.

2. Sentence structure
   In a neutral Italian sentence, the subject often comes before the verb:

   • La notizia = subject
   • sorprende = verb
   • tutti = object

So the structure is:

• La notizia → subject
• sorprende → verb
• tutti → direct object

Yes. Italian word order is more flexible than English word order.

The most neutral version is:

• La notizia sorprende tutti.

But you could also hear something like:

• Sorprende tutti, la notizia.

That sounds more marked or stylistic, as if highlighting the effect of the news first.
For learners, though, the standard version is the best one to use.

Because Italian often prefers a direct active structure with sorprendere:

• La notizia sorprende tutti.
  literally: The news surprises everyone.

English sometimes uses:

• The news is surprising to everyone
• The news surprises everyone

Italian strongly favors the second kind of structure here.

You could make it more adjective-based in Italian, but it would be a different sentence, for example:

• La notizia è sorprendente per tutti.

That means something like:

• The news is surprising for everyone

But it is less direct and less natural in many contexts than La notizia sorprende tutti.

It is the masculine plural form, but it is also the default form for:

• mixed groups
• people in general
• everyone

So in this sentence, tutti does not necessarily mean all men. It can simply mean everyone.

If you were talking only about a group of women, you could say:

• La notizia sorprende tutte.

Yes, depending on how it is used.

As a pronoun:

• tutti = everyone / all of them

As an adjective:

• tutti gli studenti = all the students
• tutte le case = all the houses

In La notizia sorprende tutti, it is a pronoun, because no noun follows it.

If tutti refers to a group of people, you could replace it with a direct object pronoun:

• La notizia li sorprende. = The news surprises them.
• La notizia le sorprende. = The news surprises them. (for an all-female group)

This is useful because it shows again that tutti is a direct object.

Yes, it is completely natural.

It is a straightforward, standard Italian sentence with:

• a definite subject
• a present-tense verb
• a direct object

It sounds like normal written or spoken Italian and is a good model for sentences with sorprendere.

A few points may help:

• la = simple lah
• notizia = roughly no-TEE-tsya
• sorprende = roughly sor-PREN-de
• tutti = roughly TOOT-tee

A couple of details:

• In notizia, the z sounds like ts
• In tutti, the double tt is pronounced more strongly than a single t

So the full sentence is approximately:

• lah no-TEE-tsya sor-PREN-de TOOT-tee

The pattern is:

• [subject] + [verb] + [direct object]

So:

• La notizia sorprende tutti.

You can reuse it with other nouns and objects:

• Il film sorprende il pubblico. = The film surprises the audience.
• La risposta sorprende Maria. = The answer surprises Maria.
• Questa idea sorprende tutti. = This idea surprises everyone.

This makes the sentence a very useful model for building your own Italian sentences.