aiga bange deureowayo.

A child comes into the room.

Breakdown of aiga bange deureowayo.

• ~에: destination particle
• 아이: child
• ~가: subject particle
• 방: room
• 들어오다: to come in

Questions & Answers about aiga bange deureowayo.

Why is the subject particle -가 used in 아이가 instead of -이?

Since 아이 ends in a vowel, you attach -가 (not -이, which follows consonants) to mark the subject.

What function does -에 serve in 방에 들어와요?

Here -에 marks the destination of motion (“to the room”). With movement verbs like 들어오다, -에 shows where someone is coming into.

What is the difference between 들어와요 and 들어가요?

들어오다 means “to come in” (toward the speaker), while 들어가다 means “to go in” (away from the speaker). If you’re inside the room and the child moves in your direction, you use 들어와요.

How is 들어와요 formed from the verb 들어오다?

Stem 들어오 + polite ending -아요 contracts 오 + 아 into 와, giving 들어와요.

What politeness level is signaled by the -요 ending?

-요 is the “haeyo” polite style—respectful and common in daily conversation with strangers, acquaintances, or slightly older people.

Why isn’t there a direct object marked by -을/를?

들어오다 is intransitive (it describes movement), so it doesn’t take a direct object. Instead, the place entered is shown by the location particle -에.

Can you omit 아이가 in this sentence? What happens?

Yes. If context makes the subject clear, you can say 방에 들어와요 (“(Someone) comes into the room”). The subject is simply implied.

How would you change this sentence to past tense?

Replace -아요 with -았어요: 아이가 방에 들어왔어요 (“The child entered the room”).

How do you express “The child is entering the room (right now)”?

Use the progressive form -고 있다: 아이가 방에 들어오고 있어요. This emphasizes that the action is ongoing.