يقرأ صديقي الرد.

A careful Modern Standard Arabic pronunciation is yaqraʾu ṣadīqī ar-radda.

A few helpful notes:

• يقرأ = yaqraʾu
• ق is a deep q sound, farther back than English k
• ء at the end of يقرأ is a hamza, a small glottal stop: yaqraʾ
• الرد is written with ال but pronounced ar-radd because of sound assimilation before ر

In pause, speakers often drop the final short vowels, so you may hear something closer to yaqraʾ ṣadīqī ar-radd.

يقرأ is the present/imperfect form of the verb قرأ, meaning to read.

Depending on context, it can mean:

• he reads
• he is reading
• sometimes even he will read, if the context makes that clear

So Arabic does not need a separate word for is in is reading. The present meaning is already built into يقرأ.

Because this is a very common Arabic sentence pattern: verb + subject + object.

So:

• يقرأ = reads / is reading
• صديقي = my friend
• الرد = the reply

This word order is very natural in Modern Standard Arabic. You can also say صديقي يقرأ الرد, which is also correct, but starting with the verb is especially common in formal Arabic.

Because Arabic often attaches possessive pronouns directly to the noun.

So:

• صديق = friend
• صديقي = my friend

The ending -ي means my.
So instead of using a separate word for my, Arabic adds it to the noun itself.

Because صديقي is already definite.

In Arabic, a noun becomes definite in more than one way. Two important ones are:

• adding ال = the
• adding a possessive ending like -ي = my

So صديقي already means my friend, which is definite, and that is why you do not say الصديقي here.

Because ر is a sun letter.

When ال comes before a sun letter, the l sound of al- is not pronounced. Instead, it blends into the next consonant.

So:

• written: الرد
• pronounced: ar-radd

This is a pronunciation rule only. The spelling still keeps ال.

Mostly from the normal word order and, in fully vowelled Arabic, from case marking.

In this sentence:

• يقرأ = the verb
• the noun right after it, صديقي, is understood as the subject
• الرد comes after that as the direct object

If the sentence were fully vowelled, the object would appear as الرَّدَّ, showing the accusative ending. In ordinary writing, short vowels are usually omitted, so learners often rely on word order and context.

Yes. The verb would change to match a feminine singular subject.

For example:

• تقرأ صديقتي الرد = My female friend reads / is reading the reply

So compare:

• يقرأ صديقي الرد = My male friend reads the reply
• تقرأ صديقتي الرد = My female friend reads the reply

This is a common agreement pattern in Arabic.