بعد شوي انا سكرت الباب وفتحت الشباك.

Literally, بعد شوي means after a little.

In everyday Levantine, it often works like an idiom and can mean:

• in a little while / soon when talking about the future
• a little later when telling a story about the past

In this sentence, because the verbs are past tense (سكرت and فتحت), the natural sense is a little later.

Yes — the verbs already show I.

• سكرت = I closed
• فتحت = I opened

So أنا is not required. A very natural version is simply:

بعد شوي سكرت الباب وفتحت الشباك

Adding أنا can give:

• a little emphasis
• clearer subject reference
• a natural pause after بعد شوي

So it is not wrong at all — just slightly more explicit.

That -ت is the past-tense ending for I in Levantine Arabic.

So:

• سكرت = I closed
• فتحت = I opened

This is very common in the past tense. Compare:

• كتبت = I wrote
• شفت = I saw
• أكلت = I ate

So one useful thing to notice is:

verb stem + ت often gives I did ... in the past.

Yes — in normal Arabic spelling, سكرت can be ambiguous by itself.

Depending on context, it could be understood as:

• I closed
• she closed

That is because short vowels usually are not written. The pronoun makes it clear:

• أنا سكرت = I closed
• هي سكرت = she closed

So in your sentence, أنا removes the ambiguity.

Because this is colloquial Levantine, not formal written Arabic.

In everyday speech, people commonly use:

• سكّر / سكر = to close
• فتح = to open

The verb أغلق exists, but it sounds much more formal, more like Standard Arabic or careful written language.

So for normal conversation, سكرت الباب is exactly the kind of wording you would expect.

Because شباك is the normal everyday word in Levantine for window.

A learner will often meet:

• شباك = common spoken word
• نافذة = more formal / textbook / Standard Arabic-style word

So if you are aiming for natural spoken Levantine, الشباك is the more useful choice.

This is because of sun letters and moon letters.

• ب in الباب is a moon letter, so the ل of ال is pronounced
• ش in الشباك is a sun letter, so the ل sound assimilates to the next consonant

So:

• الباب is pronounced roughly il-bāb
• الشباك is pronounced roughly ish-shubbāk

The spelling stays ال in both words, but the pronunciation changes.

A natural pronunciation would be roughly:

baʿd shwayy ana sakkart il-bāb w fataḥt ish-shubbāk

A few notes:

• بعد contains the letter ع, which has no exact English equivalent
• و here is just w = and
• الشباك is pronounced with assimilation: ish-shubbāk, not il-shubbāk

Depending on region and speed, you may hear slightly different vowels, but the overall shape stays the same.

The word order is somewhat flexible.

Your sentence is fine:

بعد شوي انا سكرت الباب وفتحت الشباك

But these are also possible:

• بعد شوي سكرت الباب وفتحت الشباك
• أنا سكرت الباب وفتحت الشباك بعد شوي
  
  • this sounds different in focus, more like I closed the door and opened the window a little later

The most neutral, natural spoken version is probably:

بعد شوي سكرت الباب وفتحت الشباك

So the sentence is flexible, but moving pieces around can slightly change emphasis.

No.

In سكرت الباب وفتحت الشباك, the subject I is understood for both verbs.

So this means:

• I closed the door
• and (I) opened the window

Arabic often does this, just like English can. Repeating أنا before فتحت would usually sound unnecessary unless you want special emphasis.