मैं आपको अभी एक संदेश भेज रही हूँ।

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Breakdown of मैं आपको अभी एक संदेश भेज रही हूँ।

• होना: to be
• अभी: now
• रहना: to stay

Questions & Answers about मैं आपको अभी एक संदेश भेज रही हूँ।

Why is it आपको here?

आपको is the oblique/dative form of आप with को.

In this sentence, आपको means something like to you. With verbs like भेजना (to send), Hindi often marks the recipient with को:

• मैं आपको संदेश भेज रही हूँ। = I am sending a message to you.

Also, आप is the polite/respectful form of you. Depending on who you are talking to, you could also hear:

• मैं तुमको अभी एक संदेश भेज रही हूँ।
• मैं तुझे अभी एक संदेश भेज रही हूँ। (more intimate/nonstandard in some contexts)

So आपको tells you both:

1. the person is the receiver of the message, and
2. the speaker is using a polite form of you.

Why does the verb say भेज रही हूँ?

This is the present progressive structure, used for an action happening right now or currently.

It is built like this:

• main verb stem: भेज-
• progressive participle: रहा / रही / रहे
• form of होना: हूँ / है / हैं, etc.

So:

• भेज रही हूँ = am sending

In this sentence, रही shows that the speaker is female.