أتكلم عن الموضوع.

In the Arabic imperfect tense, the verb itself shows who is doing the action. The prefix أ- marks first person singular, so أتكلم means I speak / I am speaking.

For comparison:

• أتكلم = I speak
• تتكلم = you speak
• يتكلم = he speaks
• نتكلم = we speak

Usually, no. Arabic often leaves the subject pronoun out because the verb already tells you the subject.

So:

• أتكلم عن الموضوع = perfectly normal
• أنا أتكلم عن الموضوع = also correct, but more emphatic or contrastive

You might add أنا if you want to stress I, as in I am the one speaking about it.

Because the verb تكلّم commonly takes the preposition عن to mean to talk about something.

So the pattern is:

• تكلّم عن شيء = to talk about something

This is just how the verb works in Arabic. In English, we say talk about; in Arabic, you use تكلّم عن.

The dictionary form is تكلّمَ, which means to speak / to talk.

أتكلم is the first-person singular imperfect form of that verb.

This verb comes from the root ك ل م, which is related to speech and words. You can see the same root in words like:

• كلام = speech
• كلمة = word

The shadda means that the consonant is doubled or held a little longer.

So أتكلّم is pronounced more like a-takallam-u, not a-takalam-u.

That doubled ل is part of the verb pattern here, and it is important for correct pronunciation.

ال is the Arabic definite article, equivalent to the in English.

So:

• موضوع = a topic / a subject
• الموضوع = the topic / the subject

In this sentence, the noun is definite, so it uses ال.

Because it comes after the preposition عن. In Arabic, nouns after prepositions are normally genitive.

So in full vocalization, this part would be:

عَنِ الْمَوْضُوعِ

The final -i sound on الموضوعِ marks the genitive case.

In everyday writing, these short vowel endings are usually not written, and at the end of a sentence they are often not pronounced in pause.

Yes, the ل is pronounced here.

That is because م is a moon letter, so the ال stays al- and does not assimilate.

So you pronounce it roughly as:

al-mawḍūʿ

If it were a sun letter, the ل would assimilate, but that does not happen with م.

Yes, but أتكلم عن الموضوع is the most neutral and straightforward order.

You may also hear:

• أنا أتكلم عن الموضوع = with extra emphasis on I

More unusual word orders are possible for emphasis, but they are less neutral and depend on context. For a learner, أتكلم عن الموضوع is the best basic pattern to use.

It can mean both. The Arabic imperfect often covers meanings that English splits into simple present and present continuous.

So أتكلم can mean:

• I speak
• I am speaking

The exact meaning depends on context. Arabic does not always make that distinction as explicitly as English does.