La bombeta del passadís no funciona perquè no hi ha electricitat.

Catalan often leaves out subject pronouns when the subject is clear from the context. Here, la bombeta is already the subject, so no funciona naturally means it doesn’t work.

English needs it, but Catalan usually does not:

• Funciona = it works
• No funciona = it doesn’t work

Because de + el contracts to del in Catalan.

So:

• de + el passadís → del passadís

This is very common:

• el llibre del professor = the teacher’s book
• la porta del cotxe = the car door

Here, la bombeta del passadís means the hallway bulb or literally the bulb of the hallway.

Bombeta specifically means light bulb.
Llum means light, and by extension can also mean lamp/light fixture/light depending on context.

So:

• la bombeta del passadís = the bulb in the hallway
• la llum del passadís = the hallway light

In everyday speech, la llum del passadís is often more general, while la bombeta del passadís clearly points to the bulb itself.

In Catalan, no goes before the verb.

So:

• funciona = works
• no funciona = does not work

And:

• hi ha = there is / there are
• no hi ha = there is not / there are not

Unlike English, Catalan does not need a helper verb like do/does:

• English: it does not work
• Catalan: no funciona

In this sentence, hi is part of the very common expression hi ha, which means there is or there are.

You can think of hi ha as a fixed chunk:

• Hi ha un problema = there is a problem
• Hi ha dues portes = there are two doors
• No hi ha electricitat = there is no electricity

Historically, hi has a locative sense like there, but for learners it is easiest to learn hi ha as a unit.

Catalan uses haver-hi to express existence.

So:

• Hi ha electricitat = there is electricity
• No hi ha electricitat = there isn’t electricity

You do not normally use és or està for simple existence.

Compare:

• Hi ha una cadira a l’habitació = there is a chair in the room
• La cadira és nova = the chair is new
• La cadira està a l’habitació = the chair is in the room

So hi ha introduces the existence of something, while és and està describe it.

Perquè as one word means because.

In this sentence:

• no funciona perquè no hi ha electricitat = it doesn’t work because there is no electricity

It has an accent because Catalan spelling marks stress, and in this case also vowel quality.

A very common point of confusion is:

• perquè = because
• per què = why / for what

So:

• No funciona perquè... = It doesn’t work because...
• Per què no funciona? = Why doesn’t it work?

Because electricitat is being used as a general, uncountable noun here, like water or money in English.

So:

• No hi ha electricitat = there is no electricity

This is the normal way to say it. Using an article would usually sound unnatural unless you were talking about some specific electricity in a special context.

This is similar to:

• No hi ha aigua = there is no water
• No hi ha temps = there is no time

They mainly tell you where the stress falls, and in some cases they also give information about vowel quality.

• passadís: the stress is on the last syllable, -dís
• perquè: the stress is on the last syllable, -què

So roughly:

• passadís
• perquè

For an English speaker, the most useful thing is to notice that the accented syllable is the stressed one.

Yes, that would be natural in many contexts.

The difference is mainly nuance:

• la bombeta = the bulb
• la llum = the light

If you say la llum del passadís no funciona, you are talking about the hallway light in a general sense.
If you say la bombeta del passadís no funciona, you are focusing more specifically on the bulb.

In real life, speakers may choose either one depending on what they want to emphasize.

No, but it is a very common and standard word. Passadís means corridor or hallway.

Depending on region or context, you may also hear other words, but passadís is a very safe choice for learners.

So:

• el passadís = the hallway / corridor

In this sentence, del passadís simply means of the hallway or in the hallway, depending on how naturally you translate it into English.