jumalmada jokawa gongwoneseo gati norayo.

마다 means every or each when it is attached to a noun.

So:

• 주말 = weekend
• 주말마다 = every weekend / each weekend

It attaches directly to the noun with no space.

More examples:

• 날마다 = every day
• 해마다 = every year
• 사람마다 = every person / each person

In this sentence, 주말마다 tells you how often the action happens.

Because 와 here means with, not a direct object marker.

• 조카와 = with my nephew/niece
• 조카를 = my nephew/niece (as the direct object)

The verb 놀다 often goes with the person you are playing with, so Korean commonly uses 와/과, 하고, or 랑.

So:

• 조카와 놀아요 = I play with my nephew/niece.
• 조카를 놀아요 = not natural

A few natural alternatives:

• 조카하고 놀아요
• 조카랑 놀아요

These all mean basically the same thing, though 와/과 is a bit more written/formal than 하고 or 랑.

Because 에서 marks the place where an action happens.

• 공원에서 놀아요 = play at the park
• 공원에 가요 = go to the park

A very common distinction is:

• 에 = destination or static location
• 에서 = location where an action takes place

Since 놀아요 is an action, 에서 is the correct particle here.

Compare:

• 공원에 있어요 = I am at the park.
• 공원에서 놀아요 = I play at the park.

같이 means together.

So the sentence includes both:

• 조카와 = with my nephew/niece
• 같이 = together

In English, this can feel a little repetitive, but in Korean it is very natural.

So:

• 조카와 놀아요 = I play with my nephew/niece.
• 조카와 같이 놀아요 = I play together with my nephew/niece.

The version with 같이 adds a sense of doing it together, but the sentence would still be natural without it.

No, it is not strictly necessary.

You could say:

• 주말마다 조카와 공원에서 놀아요.

and it would still mean I play with my nephew/niece at the park every weekend.

Adding 같이 just makes the sentence feel a little more explicit or natural in everyday speech, emphasizing together.

So both are fine:

• 조카와 놀아요
• 조카와 같이 놀아요

놀아요 is the polite present-style form of 놀다 (to play, to hang out, to have fun depending on context).

Breakdown:

• dictionary form: 놀다
• stem: 놀-
• polite ending: -아요
• result: 놀아요

It can mean:

• I play
• I am playing
• I play habitually

Because Korean present tense often covers both simple present and present progressive depending on context.

In this sentence, because of 주말마다, it is understood as a habitual action:

• I play with my nephew/niece at the park every weekend.

Korean often leaves out the subject when it is obvious from context.

So this sentence does not explicitly say I, but in many learning materials the natural interpretation is:

• I play with my nephew/niece at the park every weekend.

Depending on context, it could also mean:

• We play...
• He/She plays...

But if this appeared by itself in a beginner lesson, the most likely implied subject is I.

This is very normal in Korean. Subjects and objects are often omitted if they are understood.

Yes. Korean word order is flexible as long as the particles stay correct.

The basic neutral order here is:

• 주말마다 = every weekend
• 조카와 = with my nephew/niece
• 공원에서 = at the park
• 같이 = together
• 놀아요 = play

You could also say:

• 주말마다 공원에서 조카와 같이 놀아요.
• 조카와 주말마다 공원에서 같이 놀아요.

These are all grammatical. The differences are mostly about emphasis and flow, not basic meaning.

The verb usually stays at the end.

조카 can mean either nephew or niece.

Korean often does not distinguish gender in this word unless more context is added.

If someone wants to be specific, they might say:

• 남자 조카 = nephew
• 여자 조카 = niece

So if the translation you were shown says nephew, that meaning comes from context or from the lesson’s choice, not from 조카 alone.

Yes, but the nuance is a little different.

• 같이 = together, very common in everyday speech
• 함께 = together, slightly more formal or written-sounding

So:

• 조카와 같이 놀아요 = very natural in everyday conversation
• 조카와 함께 놀아요 = also correct, but a bit more formal/literary

For casual spoken Korean, 같이 is usually the more common choice.

Not always. 놀다 is broader than English play.

Depending on context, it can mean:

• to play
• to hang out
• to have fun
• to spend leisure time

In this sentence, since it involves a nephew/niece and the park, play is the most natural translation.

But in other situations:

• 친구랑 놀아요 can mean I hang out with my friend not necessarily I play with my friend in a childlike sense.

So 놀다 is a useful everyday verb with a wider range than English play.