Ehi, hai visto il telefono?

Ehi is an attention-getter, like hey! in English. It is informal, so you would use it with friends, family, classmates, or in casual situations.

In a more polite or formal context, you would usually say something else, such as Scusi or Mi scusi instead of Ehi.

Italian often drops subject pronouns when they are clear from the verb form.

Here, hai already tells you the subject is you singular, because hai is the tu form of avere.

So:

• Hai visto il telefono? = normal, natural Italian
• Tu hai visto il telefono? = also possible, but tu adds emphasis, as in Have you seen the phone?

Hai visto is the passato prossimo, a very common past tense in Italian.

It is made with:

• hai = the present tense of avere used as an auxiliary verb
• visto = the past participle of vedere

So hai visto literally looks like have seen, and depending on context it can mean:

• have you seen
• did you see

Italian uses this tense very often for completed past actions, especially in everyday speech.

They are the two parts of the verb phrase:

• hai = you have; second person singular of avere
• visto = seen; the past participle of vedere (to see)

Together, hai visto means have you seen / did you see.

Because visto is the past participle of vedere.

Many Italian past participles end in:

• -ato for -are verbs
• -uto for many -ere verbs
• -ito for many -ire verbs

But vedere is irregular, so its past participle is visto, not something predictable like veduto in normal modern speech.

Here it stays visto because the auxiliary is avere, and the direct object il telefono comes after the verb. In that normal situation, the participle usually does not change.

In Italian, singular countable nouns often need an article where English might not use one.

So il telefono means the phone. This suggests a specific phone, probably one that both speakers know about from context.

Saying just telefono here would sound unnatural in standard Italian.

Yes. In Italian, questions often keep the same word order as statements. The difference is usually shown by:

• intonation in speech
• a question mark in writing

So:

• Hai visto il telefono. = statement
• Hai visto il telefono? = question

Unlike English, Italian does not usually need do or subject-auxiliary inversion.

Yes, you can. It is grammatically correct.

But in normal conversation, Italian usually prefers:

• Hai visto il telefono?

Adding tu gives emphasis or contrast, for example:

• Io no, ma tu hai visto il telefono?
  I haven’t, but have you seen the phone?

So the version without tu is usually the most natural.

This is a very common question.

• vedere = to see
• guardare = to look at, to watch

So Hai visto il telefono? asks whether you have seen/spotted/noticed the phone.

If you said Hai guardato il telefono?, that would mean something more like Have you looked at the phone?, which is a different idea.

You would change the auxiliary verb:

• Hai visto il telefono? = talking to one person informally
• Avete visto il telefono? = talking to more than one person
• Ha visto il telefono? = talking to one person formally

A small note on register: Ehi is informal, so it does not fit very naturally with a formal Lei form. In a formal situation, something like this is more natural:

• Scusi, ha visto il telefono?

A simple pronunciation guide is:

Ehi, hai visto il telefono?
EH-ee, eye VEES-to eel teh-LEH-fo-no?

A few helpful points:

• Ehi sounds like an informal call for attention, roughly eh-ee
• hai sounds a bit like English eye
• visto has a clear s sound: VEES-to
• telefono is stressed on le: te-LE-fo-no

The written h in hai is not pronounced. It is there only to distinguish forms like hai from ai in spelling.