Dzień dobry, Pani Anno.

Because the speaker is addressing Anna directly. In Polish, names often change form when you speak to someone, and Anna becomes Anno.

This is called the vocative form. So:

• Anna = the basic dictionary form
• Anno! = when calling or addressing Anna directly

So Pani Anno is the natural polite way to say Mrs/Ms Anna when speaking to her.

Anno is in the vocative case.

Polish uses the vocative for direct address, for example when you say someone’s name to them:

• Anno!
• Panie Marku!
• Mamo!

In this sentence, Pani Anno is a direct form of address, so Anna changes to Anno.

Because Pani already has the same form in the nominative and vocative. So when you address a woman politely, you say Pani.

That means:

• nominative: Pani
• vocative: Pani

So only the name changes here:

• Pani Anna → basic form
• Pani Anno → direct address

Pani is the polite way to address or refer to a woman. In English, depending on context, it can feel like madam, ma’am, Ms, or Mrs, but it does not directly tell you whether the woman is married.

So Pani Anno is a polite way of saying something like:

• Ms Anna
• Mrs Anna
• Madam Anna

The exact English equivalent depends on the situation, but the main idea is respectful, formal address.

The masculine equivalent is Pan.

In Polish, Pan and Pani are often capitalized in polite direct address, especially in writing, to show respect.

So:

• Dzień dobry, Pani Anno. = polite, respectful written form

You may also see lowercase pani in less formal writing or when it is not being used as a respectful direct form of address. But in learner materials and polite written examples, capitalization is very common.

Because Pani Anno is a form of direct address.

In both Polish and English, when you address someone directly, you usually separate that part with commas:

• Dzień dobry, Pani Anno.
• Good morning, Anna.

So the comma is not optional here in standard writing.

No. Even though it literally contains day, Polish dzień dobry is used much more broadly than English good morning.

It can be used during the day as a standard polite greeting, roughly covering:

• good morning
• good afternoon
• sometimes just hello in formal situations

In the evening, Polish usually switches to dobry wieczór.

A rough English-friendly guide is:

djen DOB-ri, PAH-nee AHN-no

A few details:

• Dzień has a soft sound at the end, like a very soft n.
• dobry has a rolled or tapped r if pronounced carefully.
• Pani sounds like PAH-nee.
• Anno has a clear double n sound: AHN-no.

A more IPA-like pronunciation is:

[d͡ʑeɲ ˈdɔ.brɨ ˈpa.ɲi ˈan.nɔ]

Yes, very natural.

Pani + first name in the vocative is a normal polite way to address a woman in many situations, especially when the relationship is respectful but not extremely distant, for example:

• at work
• at school
• in service situations
• with someone older or not well known

It sounds polite and normal. It is less stiff than some very formal English-style address patterns.

Grammatically, yes — Anno is the correct direct-address form of Anna.

But socially, it is less formal. If you do not know the person well, using only the first name may sound too familiar. In that case, Dzień dobry, Pani Anno is safer and more polite.

So:

• Dzień dobry, Pani Anno = polite, respectful
• Dzień dobry, Anno = more personal / less formal

In careful standard Polish, direct address should use the vocative, so Anno is the expected form.

So the standard version is:

• Dzień dobry, Anno
• Dzień dobry, Pani Anno

You may sometimes hear people use Anna instead of Anno in casual speech, because modern spoken Polish sometimes replaces the vocative with the nominative. But for a learner, Anno is the best form to learn and use in correct, polite Polish.