No entenc aquest missatge; el pots llegir amb mi?

Because entenc is the first-person singular present form of entendre (to understand).

So:

• entendre = to understand
• entenc = I understand

With no, it becomes:

• No entenc = I don’t understand

This verb is a little irregular in the I form, so you need entenc, not a form built directly from the infinitive.

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

So in:

• No entenc

the verb entenc already tells you the subject is I.

You could say Jo no entenc aquest missatge, but jo is usually only added for emphasis, contrast, or clarity.

Aquest means this.

It is a demonstrative adjective, and it agrees with the noun it describes.

Here:

• aquest missatge = this message

Because missatge is masculine singular, the correct form is aquest.

Related forms are:

• aquesta = this, feminine singular
• aquests = these, masculine plural
• aquestes = these, feminine plural

Yes. Missatge is a masculine singular noun.

That affects both:

• aquest missatge = this message
• el = it referring back to missatge

If the noun were feminine, you would expect different forms, such as aquesta and la.

El is a direct object pronoun meaning it.

It refers back to aquest missatge:

• No entenc aquest missatge; el pots llegir amb mi?

Literally, this is something like:

• I don’t understand this message; can you read it with me?

So el avoids repeating aquest missatge in the second clause.

In Catalan, object pronouns like el, la, els, les often go before a conjugated verb.

So:

• el pots llegir = can you read it

This is very normal Catalan word order.

You can also often place the pronoun after the infinitive:

• pots llegir-lo

Both are possible, but el pots llegir is very common and natural.

Pots is the second-person singular present form of poder (to be able to / can).

So:

• pots = you can
• llegir = to read

Together:

• pots llegir = can you read / you can read

In the sentence, it is a question:

• el pots llegir...? = can you read it...?

The subject tu is omitted because the verb form already shows it.

Amb mi literally means with me.

So:

• el pots llegir amb mi?
  = can you read it with me?

This suggests doing it together or helping me go through it.

That is slightly different from read it to me. If you wanted the idea of reading it aloud for me, Catalan would more naturally use something like:

• Em pots llegir aquest missatge?
• Me’l pots llegir?

So amb mi gives a sense of with me / alongside me, not just to me.

Yes, slightly.

• El pots llegir amb mi? = Can you read it with me?
  This sounds like let’s go through it together.

• Em pots llegir aquest missatge? = Can you read this message to me?
  This sounds more like read it for me / aloud to me.

Both are possible, but they are not exactly the same nuance.

Yes. Me’l pots llegir? is a very natural Catalan sentence.

It combines:

• em / me = to me
• el = it

So:

• Me’l pots llegir? = Can you read it to me?

This is more compact than repeating aquest missatge.

It is especially useful when the message has already been mentioned.

The semicolon links two closely related clauses:

• No entenc aquest missatge
• el pots llegir amb mi?

It shows a stronger break than a comma, but keeps the two ideas closely connected.

You could also write:

• No entenc aquest missatge. El pots llegir amb mi?

That would also be correct and natural.

It is informal, because pots is the tu form.

So this is how you would speak to:

• a friend
• a classmate
• a family member
• someone you address as tu

If you wanted a more formal version, you would use pot for vostè:

• No entenc aquest missatge; el pot llegir amb mi?

That is much less informal and more polite/distant.

Yes, you could say:

• No entenc aquest missatge; pots llegir aquest missatge amb mi?

But that sounds repetitive. Using el is more natural:

• No entenc aquest missatge; el pots llegir amb mi?

Catalan, like English, often uses a pronoun once the noun is already clear.

Not exactly. A very literal breakdown would be:

• No entenc aquest missatge = I do not understand this message
• el pots llegir amb mi? = can you read it with me?

Natural English might be:

• I don’t understand this message; can you read it with me?
• I don’t understand this message; can you help me read it?

So the structure is close to English, but the most natural translation may vary a little depending on context.