आप कब आएँगी?

A simple breakdown is:

• आप = you
• कब = when
• आएँगी = will come / will arrive, with feminine agreement

So the structure is basically you + when + will come?

Because आओगी is used with तुम, not with आप.

Hindi changes the verb depending on the pronoun and the level of politeness:

• तुम कब आओगी? = when will you come?
• आप कब आएँगी? = when will you come? (more polite / formal)

So once you choose आप, the verb has to match it.

It can be either.

आप is used for:

• one person, politely or respectfully
• more than one person

So आप कब आएँगी? could mean:

• speaking politely to one woman
• speaking to a group of women

Context tells you which one is meant.

Yes.

In this sentence, आएँगी shows feminine agreement. That usually means the speaker is addressing:

• one woman respectfully, or
• more than one woman

If you were speaking to a man respectfully, you would usually say:

• आप कब आएँगे?

So the difference is:

• आएँगे = masculine / mixed-gender / default plural
• आएँगी = feminine

Because in Hindi, future meaning is usually built into the verb itself.

English uses a separate helper word:

• will come

Hindi often expresses that in one verb form:

• आएँगी

So आएँगी already contains the future idea. You do not need an extra word for will.

That is normal Hindi word order.

Hindi often puts time words such as today, tomorrow, now, or when before the main verb. So:

• आप कब आएँगी? is the natural order

A very literal English-style rearrangement is not needed. Hindi does not have to copy English word order.

The dictionary form is आना, meaning to come.

The form आएँगी is a future form that agrees with आप and with feminine gender. You do not have to build it from scratch every time at first; it is best to learn it as part of a pattern:

• मैं आऊँगी = I will come
• तुम आओगी = you will come
• आप आएँगी = you will come
• वह आएगी = she will come

So आएँगी is the correct future form for आप with feminine agreement.

A rough guide is aa-en-gee, with the middle vowel slightly nasalized.

A few pronunciation points:

• आ sounds like the a in father
• एँ has a nasal quality because of ँ
• गी sounds like gee

So the whole sentence can be said roughly as:

• aap kab aa-en-gee?

The nasalization does not need to be exaggerated; a light nasal sound is enough.

The sign ँ is called chandrabindu. It nasalizes the vowel before it.

So in आएँगी, it makes the ए sound nasal. This is part of the standard spelling and pronunciation of the form.

Learners often notice this because the word looks more complicated than it sounds. In normal speech, the nasalization may be fairly light.

Yes.

Depending on context, आना can mean either:

• to come
• to arrive

So आप कब आएँगी? can be understood as either:

• When will you come?
• When will you arrive?

English chooses between come and arrive more clearly, but Hindi often uses आना for both ideas.

Yes, but that changes the gender agreement.

• आप कब आएँगे? is used for a man, more than one person, or a mixed-gender group
• आप कब आएँगी? is used for a woman or a group of women

So both are correct, but they match different people.