هي بتشطف القميص بميه.

Here is the breakdown:

• هي = she
  • the subject pronoun
• بتشطف = rinses / is rinsing
  • the verb in the present tense
• القميص = the shirt
  • the direct object
• بميه = with water
  • a prepositional phrase showing the means used

So the structure is:

• هي = subject
• بتشطف = verb
• القميص = object
• بميه = how / with what

A natural Egyptian-style pronunciation is approximately:

heyya bitishṭaf il-ʔamīṣ b-mayya

A few notes:

• هي is usually pronounced heyya
• ال in Egyptian is often pronounced il-, so القميص sounds like il-ʔamīṣ
• the ق in many Egyptian pronunciations becomes a glottal stop, like ʔ
• ميه is commonly pronounced mayya

You may hear small vowel differences depending on the speaker, but this is a good practical pronunciation.

In Egyptian Arabic, بـ on a verb usually marks the ordinary present tense.

So:

• تشطف = she rinse / she rinsing (bare stem idea)
• بتشطف = she rinses / she is rinsing

This بـ is one of the most important features of Egyptian Arabic present-tense verbs.

In many everyday contexts, بتشطف can mean either:

• she rinses
• she is rinsing

The exact meaning depends on context.

No. These are two different b-s.

• In بتشطف, بـ is a verb marker for the present tense.
• In بميه, بـ is a preposition meaning with / by means of / using.

So in this sentence:

• بتشطف = present-tense verb
• بميه = with water

They look the same in writing, but they do different jobs.

Yes, you could absolutely say بتشطف القميص بميه.

In Egyptian Arabic, the verb already shows that the subject is she because of the تـ in بتشطف. So the pronoun هي is often optional.

Why include هي then?

• for emphasis
• for clarity
• to contrast with someone else
• because the speaker simply chose to state the subject

So both are natural:

• هي بتشطف القميص بميه
• بتشطف القميص بميه

It can mean both.

In Egyptian Arabic, the present form with بـ often covers both:

• a habitual action: she rinses
• an action happening now: she is rinsing

Context tells you which one is meant.

For example:

• if you are describing what she usually does, it means she rinses
• if you are watching her right now, it means she is rinsing

Not exactly.

شطف usually means to rinse, to wash off, or to run water over something.

That is a bit different from غسل, which is more like to wash in a general sense.

So:

• غسل = wash
• شطف = rinse

If someone is cleaning a shirt and using water to rinse it out, شطف is a very natural verb.

القميص means the shirt.

The الـ is the definite article, meaning the.

In Egyptian Arabic:

• الـ is usually pronounced il-
• so القميص is commonly pronounced il-ʔamīṣ

Also, in Egyptian Arabic, the letter ق is often pronounced as a glottal stop rather than a full q sound.

So a learner should recognize:

• spelling: القميص
• everyday Egyptian pronunciation: il-ʔamīṣ

Because this sentence is in Egyptian Arabic, not Modern Standard Arabic.

In Egyptian Arabic, the common everyday word for water is:

• ميه or مية
• usually pronounced mayya

Modern Standard Arabic uses:

• ماء

So this is a normal dialect difference. If you are learning Egyptian, ميه / مية is the form you will hear all the time in conversation.

Because the sentence means with water in a general sense, not with the water.

In Arabic, mass nouns like water are often used without the definite article when speaking generally.

So:

• بميه = with water
• بالميه = with the water or using the water (more specific)

In most ordinary situations, بميه is the natural choice.

Yes. It is very natural.

Egyptian Arabic often likes subject + verb + object in everyday speech, especially when the subject is a pronoun.

So this pattern is common:

• هي = subject
• بتشطف = verb
• القميص = object

You can also hear sentences without the explicit subject pronoun:

• بتشطف القميص بميه

That is also natural.

Compared with Modern Standard Arabic, Egyptian Arabic is generally more comfortable with this kind of everyday subject-first order.