اختي بتفضل القهوة زيادة.

Because Arabic often attaches possessive pronouns directly to the noun.

• أخت / اخت = sister
• -ي = my

So أختي / اختي literally means sister-my, i.e. my sister.

In careful standard spelling, it is أختي with a hamza.

In casual Egyptian writing, people often leave the hamza off at the beginning of words, so اختي is very common in everyday texts, chats, and subtitles. Both spellings represent the same word here.

بتفضل here means she prefers or she likes better.

It comes from the verb فضّل = to prefer / favor.

So the core structure is:

• اختي = my sister
• بتفضل = she prefers
• القهوة = coffee

Depending on the translation you were given, English may sometimes use likes for naturalness, but the Arabic verb itself has a preference nuance.

In Egyptian Arabic, بـ is the normal marker for the present or habitual tense.

So بتفضل is the everyday Egyptian way to say something like:

• she prefers
• she likes
• she usually prefers

This بـ is one of the clearest signs that the sentence is colloquial Egyptian rather than Modern Standard Arabic.

Yes, on its own, بتفضل can be ambiguous. In Egyptian Arabic, that same form can mean:

• she prefers
• you (masculine singular) prefer

The sentence is clear because the subject اختي comes first. Since my sister is feminine, بتفضل must mean she prefers here.

A separate pronoun like هي is not necessary unless you want extra emphasis.

Because the subject is my sister, and sister is feminine.

In Arabic, verbs agree with the subject. So with a feminine singular subject, you use the feminine form:

• هي بتفضل = she prefers

If the subject were masculine, you would normally get:

• هو بيفضل = he prefers

Arabic often uses the definite article with nouns that refer to things in a general or category sense.

So القهوة can mean coffee in general, not necessarily the coffee in a very specific English sense.

This is very normal in Arabic. English and Arabic do not always use the in the same places.

In Egyptian Arabic, القهوة is commonly pronounced something like el-ʔahwa or il-ʔahwa.

Two useful notes:

• الـ is usually pronounced el / il in Egyptian, not al
• ق is often pronounced as a glottal stop ʔ in Cairene Egyptian

So the word does not sound like full Modern Standard Arabic al-qahwa in everyday Egyptian speech.

زيادة literally has the idea of increase / extra / more.

In Egyptian Arabic, it is often used like an adverb or intensifier, and depending on context it can mean things like:

• a lot
• very much
• too much
• extra

So in this sentence, it is adding emphasis to the preference. The exact English wording depends on the meaning you were already shown.

Because Arabic does not always need to state the second item explicitly if it is already understood from context.

So بتفضل القهوة can stand on its own as she prefers coffee.

If you want to name the comparison clearly, you can add it:

• اختي بتفضل القهوة على الشاي = my sister prefers coffee to tea

So the comparison can be explicit, but it does not have to be.

Not exactly.

• بتحب = she likes / she loves
• بتفضل = she prefers / favors

They can overlap in some English translations, but بتفضل usually suggests a stronger idea of preference or choosing one thing over another.

So if someone says اختي بتفضل القهوة, it sounds more like my sister prefers coffee than just my sister likes coffee.

Several things point to everyday Egyptian usage:

• بـ in بتفضل for the normal present tense
• casual spelling اختي instead of the more careful أختي
• the colloquial use of زيادة as an intensifier
• no case endings, which spoken Egyptian does not use

So this is the kind of sentence you would expect in natural spoken Egyptian or informal writing, not in formal Modern Standard Arabic.