Я чекаю тебе біля під’їзду, бо двері знову зачинені.

In everyday Ukrainian, під’їзд often means the entrance section of an apartment building: the main doorway area, stairwell, and the part of the building people enter through. So біля під’їзду means by the building entrance or near the entrance.

This is a very common word in city/apartment-building contexts.

Because біля requires the genitive case.

The base form is під’їзд. After біля, it changes to під’їзду.

So:

• під’їзд = entrance
• біля під’їзду = near the entrance

This same pattern happens with many nouns after біля:

• біля будинку = near the house
• біля магазину = near the shop

The apostrophe shows that the sounds are kept separate and that ї is pronounced like yi rather than simply softening the previous consonant.

So під’їзд is pronounced roughly like pid-YIZD, with the stress on the second part.

The apostrophe is important in words like this because it changes how the letters are read.

That is true: Ukrainian often omits subject pronouns when they are clear from the verb ending.

So both of these are natural:

• Я чекаю тебе біля під’їзду...
• Чекаю тебе біля під’їзду...

Including Я can add a little emphasis, clarity, or simply reflect the speaker’s style. It is not wrong at all; it is just a bit more explicit.

Чекаю is the imperfective present form, so it means I am waiting or I wait.

That fits the situation: the speaker is already waiting now.

Почекаю is a perfective form and usually has a future meaning, something like I’ll wait or let me wait a bit.

So here:

• чекаю = I’m waiting
• почекаю = I’ll wait / I’ll wait for a bit

This is a very common learner question.

Traditionally, чекати often takes the genitive case:

• чекати кого? чого?

With тебе, the genitive and accusative forms happen to look the same, so you cannot see the difference in this sentence.

You may also hear чекати на когось / на щось, especially in modern speech:

• чекаю тебе
• чекаю на тебе

Both can be heard. The version in your sentence is completely normal.

In Ukrainian, двері is normally a plural-only noun. Even when English would say the door, Ukrainian usually says двері and treats it grammatically as plural.

So you get:

• двері зачинені = the door is closed
• нові двері = a new door / new doors
• ці двері = this door / these doors, depending on context

This is just one of those nouns you learn as grammatically plural.

Because зачинені agrees with двері, and двері is grammatically plural.

So:

• двері = plural noun
• зачинені = plural adjective/participle meaning closed/shut

That agreement is exactly what Ukrainian grammar requires.

Both can often be translated as closed, but there is a nuance.

Зачинені is especially natural for doors, windows, gates, things that are physically shut.

Закриті is broader and can mean:

• physically closed
• closed to visitors
• closed for business
• unavailable

So in this sentence, двері знову зачинені sounds very natural because we are talking about doors being shut.

Бо means because.

Yes, you can also say тому що. Both are correct:

• Я чекаю тебе біля під’їзду, бо двері знову зачинені.
• Я чекаю тебе біля під’їзду, тому що двері знову зачинені.

Бо is shorter and very common in everyday speech. Тому що is also common and may sound a little fuller or more explicit.

Знову means again.

In this sentence, двері знову зачинені means the doors are closed again.

Its position is natural because it modifies the whole idea that the doors are in that state once more. Ukrainian word order is flexible, but this placement is the most neutral and natural here.

Because бо introduces a subordinate clause, and in Ukrainian that clause is normally separated by a comma.

So the sentence is divided like this:

• Я чекаю тебе біля під’їзду,
• бо двері знову зачинені.

This is standard Ukrainian punctuation.

Yes. Ukrainian word order is fairly flexible, and changing it can shift emphasis.

For example:

• Я чекаю тебе біля під’їзду... = neutral
• Біля під’їзду я чекаю тебе... = emphasizes the location
• Тебе я чекаю біля під’їзду... = emphasizes you

The original version is a very natural, neutral way to say it.