اختي كمان بتحب تقرا في البيت بالليل.

A common Egyptian pronunciation would be roughly:

okhti kamān btiḥibb teʔra fil-bēt bil-lēl

A few quick notes:

• kh = the rough sound in German Bach or Scottish loch
• ḥ = a stronger, breathier h
• ʔ = a glottal stop, like the break in uh-oh
• في البيت is often pronounced together as fil-bēt
• بالليل is pronounced bil-lēl

Different speakers and transliteration systems may write the vowels a little differently.

In Arabic, possession is often shown with a suffix instead of a separate word.

• أخت / اخت = sister
• أختي / اختي = my sister

The ending -ي means my.

So اختي literally means sister-my.

Also, in careful spelling, this word is often written أختي with a hamza on the first alif. In casual writing, many people just write اختي.

كمان in Egyptian Arabic often means:

• also
• too
• as well

So اختي كمان means my sister too or my sister also.

Putting كمان after اختي is very natural when you are adding your sister to something already mentioned.

For example, the idea is something like:

• I like reading at night. My sister does too.

Arabic word order is flexible, but اختي كمان is a very normal way to say my sister too.

Arabic verbs usually already include the subject, so you often do not need a separate pronoun like she.

Here, بتحب tells you the subject is:

• she or
• you masculine singular

But because the sentence already says اختي (my sister), the meaning is clearly she likes.

So Arabic does not need an extra word for she here.

In Egyptian Arabic, the prefix بـ often marks the present or habitual meaning.

So:

• بتحب = she likes / she loves
• without بـ, the meaning can change depending on context

This b- is a very common Egyptian feature. It often corresponds to an ordinary present tense in English.

So بتحب here means something like she likes or she enjoys.

This is a very common learner question.

After a verb like:

• يحب = like/love
• عايز = want
• يقدر = can/be able

the next verb often appears without the present marker بـ.

So:

• بتحب تقرا = she likes to read

This is how Egyptian Arabic expresses something like the English infinitive to read.

Arabic does not have a separate infinitive form exactly like English to read, so it often uses a plain verb form after another verb.

That is why تقرا is natural here, not بتقرا.

In more careful spelling, yes, you may see تقرأ.

But in informal Egyptian writing, people very often leave out hamzas, so تقرا is extremely common.

So:

• تقرأ = more careful / formal spelling
• تقرا = very common informal spelling

In Egyptian pronunciation, this verb is usually said roughly as teʔra.

So the informal spelling reflects the fact that everyday writing is often much looser than formal Arabic spelling.

These are just two different prepositional expressions.

• في البيت = in the house / at home
• بالليل = at night

A few details:

1. في البيت

• في = in / at
• البيت = the house / home

So في البيت literally means in the house, but it often translates naturally as at home.

2. بالليل

This is made from:

• بـ = with / in / at (depending on context)
• الليل = the night

Together, بالليل means at night.

This is just a very common Arabic way to express time.

Yes, this is clearly colloquial Egyptian-style Arabic.

Some Egyptian features here are:

• كمان for also
• the present marker بـ in بتحب
• informal spelling like اختي and تقرا

A more formal MSA-style version could be:

أختي أيضًا تحب أن تقرأ في البيت ليلًا.

A few differences:

• كمان becomes أيضًا
• بتحب becomes تحب
• تقرا becomes تقرأ
• بالليل can become ليلًا

So the original sentence is very natural in Egyptian everyday speech, while the formal version sounds more like Standard Arabic.