هي هتشتري سرير جديد للاوضة بعد الشغل.

It is Egyptian Arabic.

A few clues:

• أوضة is a very common Egyptian word for room.
• The future is marked with هـ in هتشتري, which is a colloquial pattern.
• The sentence has no case endings, which is normal in spoken Arabic.

In MSA, you would expect a different style, for example using غرفة instead of أوضة.

In Arabic, the subject pronoun is often optional because the verb already gives person/gender information.

So you could say:

• هتشتري سرير جديد للأوضة بعد الشغل

and it would still mean the same thing.

Adding هي can do a few things:

• make the subject extra clear
• add emphasis
• help contrast with someone else

So هي here is natural, but not strictly necessary.

هتشتري can be understood as:

• هـ = future marker, meaning will / going to
• تشتري = the verb form from اشترى (to buy)

So the whole word means she will buy here.

A useful learner shortcut:

• بيشتري = he buys / is buying
• بتشتري = she buys / is buying
• هتشتري = she will buy

That is a very good question, because this form can be ambiguous on its own.

In Egyptian Arabic, تشتري / هتشتري can refer to:

• she
• you when speaking to one woman

The reason we know it means she here is the pronoun هي at the beginning.

So:

• هي هتشتري = she will buy
• إنتِ هتشتري = you (feminine) will buy

Without a pronoun, context would decide.

Because in Arabic, adjectives usually come after the noun.

So:

• سرير جديد = a new bed

This is the normal order:

• noun + adjective

Also, the adjective has to agree with the noun in:

• gender
• number
• definiteness

Since سرير is:

• masculine
• singular
• indefinite

the adjective is also:

• masculine
• singular
• indefinite

That is why you get جديد.

If the noun were definite, both would be definite:

• السرير الجديد = the new bed

للاوضة means for the room.

It is made of:

• لـ = for / to
• الـ = the

When these come together, they combine as:

• ل + ال = لل

So:

• للأوضة / للاوضة = for the room

Here, لـ means something like for, because the bed is being bought for the room.

Because informal Egyptian writing often drops the hamza in casual spelling.

So you may see:

• أوضة
• اوضة

Both refer to the same word.

A more careful spelling is usually:

• أوضة

But in texting, subtitles, chat, and casual online writing, omitting the hamza is very common.

Because أوضة is the everyday Egyptian Arabic word for room.

Compare:

• أوضة = common Egyptian colloquial
• غرفة = more formal / MSA, though still understood in Egypt

So if you are learning spoken Egyptian, أوضة is exactly the kind of word you want to know.

Arabic often uses the definite article in places where English does not.

So:

• بعد الشغل literally looks like after the work
• but naturally it means after work

This is very normal in Arabic.
Here الشغل means work / the job as a noun, and بعد الشغل is a very common everyday expression.

Yes.

You can leave out هي:

• هتشتري سرير جديد للأوضة بعد الشغل

That is perfectly natural.

You can also move parts around for emphasis. For example:

• بعد الشغل هي هتشتري سرير جديد للأوضة
• هي بعد الشغل هتشتري سرير جديد للأوضة

The basic meaning stays the same, but the emphasis shifts a little depending on what comes first.

A rough pronunciation would be:

heyya hateshtiri sareer gedeed lel-oda baʿd ish-shoghl

A few notes:

• هي sounds like heyya
• ج in Egyptian is usually pronounced g, so جديد sounds like gedeed
• للأوضة / للاوضة is often pronounced something like lel-oda
• الشغل is pronounced with assimilation, so it sounds like ish-shoghl or esh-shoghl

Exact pronunciation varies a bit from speaker to speaker, but that approximation is close enough for learning.