Learn Hardcore Korean: achimmada jadongeuro buri kyeojyeoyo. - The lights turn on automatically every morning.

bold아침마다 = every morning
Other examples: bold주말마다 (every weekend), bold사람마다 달라요 (It’s different for each person), bold집집마다 (at every house) Write it together with the noun: bold아침마다 (not “아침 마다”).

Is there a nuance difference between bold아침마다 and bold매일 아침?

Both mean every morning and are often interchangeable.

bold아침마다 emphasizes distribution across mornings (each and every morning).
bold매일 아침 literally “every day morning,” slightly emphasizes the daily cycle. In everyday speech, choose freely. bold매아침 appears but bold매일 아침 is more common.

Why is it bold불이 and not bold불을?

Because the sentence uses a passive/inchoative meaning: the light is what undergoes the change.

Active (someone does it): bold불을 켜요. (Someone turns on the light.)
Passive/inchoative (it becomes turned on): bold불이 켜져요. (The light turns on/gets turned on.)

What exactly is bold켜져요?

It’s the present polite form of bold켜지다 (to be turned on, to get turned on).

Stem bold켜지 + bold어요 → bold켜지어요 → contracted to bold켜져요. It describes an event/change of state, not someone’s deliberate action.

When should I use bold켜요, bold켜져요, or bold켜져 있어요?

bold켜요: Someone turns it on. bold제가 불을 켜요. (I turn on the light.)
bold켜져요: It turns on/gets turned on (no explicit agent). bold불이 켜져요.
bold켜져 있어요: It is on (resultant state). bold불이 켜져 있어요. Past comparisons:
bold켰어요 = I/they turned it on.
bold켜졌어요 = It got turned on.
bold켜져 있었어요 = It was on.

Can I say bold불이 켜요?

No. bold켜다 is transitive and needs an agent (a person or device doing the action). The light itself isn’t the agent, so use bold불이 켜져요 (passive/inchoative).

What does bold자동으로 mean, and how is it different from bold스스로 or bold알아서?

bold자동으로: automatically (because of a mechanism, schedule, or system).
bold스스로: by oneself (volitionally). bold아이 스스로 숙제해요. (The child does homework on their own.)
bold알아서: of its own accord/“on its own” in a colloquial sense; sounds like it “knows” what to do. For devices, bold자동으로 is the standard choice.

Why bold자동으로 and not bold자동적으로?

bold자동적으로 exists but sounds formal/technical. In everyday Korean, bold자동으로 is far more natural.

Why is it bold으로 and not bold로 after bold자동?

With the particle bold(으)로:

After a consonant (except boldㄹ): use bold으로 → bold자동으로.
After a vowel or boldㄹ: use bold로 → bold차로, bold길로.

Can I move bold자동으로 or bold아침마다 to other positions?

Yes. Adverbials are flexible:

bold아침마다 불이 자동으로 켜져요.
bold불이 아침마다 자동으로 켜져요.
bold불이 자동으로 아침마다 켜져요. All are grammatical; the most common feel is bold불이 자동으로 켜져요 after setting time with bold아침마다 at the start.

Does bold불 mean “fire” or “light” here?

Here it means “light” (as in electric light). Synonyms/context words: bold전등, bold조명, bold불빛. For literal “fire,” Koreans say bold불이 나다 (a fire breaks out).

How is the sentence pronounced naturally?

Whole: “achim-mada jadong-euro buri kyeo-jyeo-yo”
Liaison: bold불이 is pronounced like “부리” (the boldㄹ links to the following vowel).
Contraction: bold켜지어요 → bold켜져요; bold져 is pronounced “jyeo.”

Can I add other particles after bold마다, like bold아침마다에?

Generally no. bold마다 already marks distribution, so bold아침마다에 is unnatural. You can, however, add a topic for contrast: bold아침마다는… (As for every morning…).

How would I change the politeness level?

Formal polite: bold아침마다 자동으로 불이 켜집니다.
Polite (current sentence): bold아침마다 자동으로 불이 켜져요.
Casual: bold아침마다 자동으로 불이 켜져.

How do I talk about multiple lights?

bold불이 다 켜져요. (All the lights turn on.)
Or specify: bold복도등이 켜져요, bold현관등이 켜져요. Using bold들 (plural marker) with bold불 is uncommon; prefer bold다 or a more specific noun like bold등 (lamp/light).

Are there other common verbs for lights turning on?

Yes, bold불이 들어오다 is very common, especially for indicator lights:

bold아침마다 자동으로 불이 들어와요. (The light comes on every morning.)