قبل ما ندخل المتحف، بدأ المطر ينزل واحنا عند الباب.

قبل ما means before when it introduces a whole clause, not just a noun.

• قبل الدخول = before entering
• قبل ما ندخل = before we enter / before we went in

In Egyptian Arabic, ما is very commonly used after قبل when the next part is a verb clause. So قبل ما ندخل المتحف is a very natural way to say before we enter the museum.

Because after قبل ما, Egyptian Arabic normally uses the imperfect verb, not the past.

So:

• ندخل = we enter / we go in
• دخلنا = we entered

The idea is before the action happened, so the action is still viewed as not completed at that point. That is why قبل ما ندخل المتحف means before we entered the museum or before we could go into the museum.

That is a very good question, because learners often expect بـ with present-tense verbs in Egyptian Arabic.

In Egyptian Arabic:

• بندخل usually means we enter / we are entering / we usually enter
• ندخل without بـ is often used after words like قبل ما, لازم, ممكن, and other contexts where the verb is not a simple present statement

So قبل ما ندخل is the natural form here, not قبل ما بندخل.

Because the verb دخل in Arabic usually takes a direct object.

So Arabic says:

• دخلت البيت = I entered the house
• دخلنا المتحف = we entered the museum

In English, we often say go into the museum or enter the museum, but in Arabic no extra word like into is needed here.

Literally, it means:

• بدأ = started
• المطر = the rain
• ينزل = to come down / fall

So the structure is basically:

the rain started to fall

This is a very common Arabic pattern:

• بدأ + noun/subject + verb
• or more simply, X started doing Y

Here, المطر is the thing doing the action, and ينزل describes what it started doing.

Because ينزل literally means comes down / descends, and that is a very natural verb for rain in Arabic.

So:

• المطر بينزل = it is raining / the rain is falling
• بدأ المطر ينزل = it started raining

This is one of those expressions that may feel different from English, but it is completely normal in Arabic.

واحنا is و + احنا.

• و = and
• احنا = we

But in this sentence, واحنا does not simply mean and we. It gives a circumstantial meaning, closer to:

• while we were
• as we were
• when we were

So واحنا عند الباب means something like:

while we were at the door or when we were standing at the door

This kind of و + pronoun structure is very common in Arabic for giving background circumstances.

عند usually means at, by, or near, depending on context.

So عند الباب here means:

• at the door
• by the door
• possibly near the door

In this sentence, the natural English meaning is at the door. It tells you where the speakers were when the rain started.

Yes. Arabic often leaves out the verb to be in the present-type structure.

So:

• احنا عند الباب literally = we at the door
• natural English = we are at the door

And in a past narrative like this, واحنا عند الباب is often best understood as:

• while we were at the door
• when we were at the door

English needs were, but Arabic does not.

It has three parts:

1. قبل ما ندخل المتحف
   = before we entered the museum

2. بدأ المطر ينزل
   = the rain started falling

3. واحنا عند الباب
   = while we were at the door

So the sentence builds the scene like this:

• first, it gives the time frame
• then, it gives the main event
• then, it adds the situation the speakers were in

This is a very natural storytelling structure in Egyptian Arabic.

Yes. It works as a background or circumstantial phrase.

It tells you the situation during the main event:

• the main event = بدأ المطر ينزل
• the background situation = واحنا عند الباب

So it answers the question: What was going on when the rain started?

Answer: We were at the door.

Yes, very strongly.

The phrase قبل ما ندخل المتحف already tells you the entering had not happened yet at the moment being described. Then واحنا عند الباب reinforces that idea: they were still at the entrance when the rain began.

So the sentence naturally suggests:

• they reached the door
• they had not gone inside yet
• then it started raining

A natural pronunciation would be roughly:

'abl ma ندخل il-matḥaf, bada il-maṭar yenzel wiḥna 'and il-bab

A few useful notes:

• قبل is often pronounced 'abl
• المتحف is often il-matḥaf
• واحنا is commonly wiḥna
• الباب is il-bab

Exact pronunciation can vary a bit by speaker, but this is a good practical guide.

In some contexts, you may hear forms with a preposition, but with دخل, the most standard and common structure is the direct object:

• ندخل المتحف

That is the safest and most natural choice for learners. Since دخل commonly takes the place directly, using المتحف without a preposition is exactly what you should expect here.

You could say something like:

• واحنا واقفين عند الباب = while we were standing at the door

That adds واقفين meaning standing, which makes the image more explicit.

But the original واحنا عند الباب is already very natural and clear. Arabic often leaves out details that English might choose to state directly.