dongsaengi achimmada gongwoneseo joginghaeyo.

동생 means younger sibling. It can mean either younger brother or younger sister.

Korean often does not specify gender unless it is important. So from 동생이 아침마다 공원에서 조깅해요, you only know that the speaker is talking about their younger sibling, not whether that sibling is male or female.

If needed, Korean can be more specific:

• 남동생 = younger brother
• 여동생 = younger sister

이 is the subject marker here.

• 동생이 = the younger sibling as the subject of the sentence

In this sentence, 동생이 tells you who is doing the jogging.

Korean subject markers come in two forms:

• 이 after a noun ending in a consonant
• 가 after a noun ending in a vowel

Since 동생 ends in ㅇ, which counts as a consonant, it takes 이.

아침마다 means every morning.

It is made of:

• 아침 = morning
• 마다 = every, each

So 아침마다 means on every morning / every morning.

This is different from 아침에:

• 아침에 = in the morning / in the mornings, depending on context
• 아침마다 = every single morning, with a stronger sense of repetition

So 마다 emphasizes regular repetition.

Examples:

• 아침에 운동해요. = I exercise in the morning.
• 아침마다 운동해요. = I exercise every morning.

마다 is a particle that means every or each.

It attaches directly to a noun and shows that something happens repeatedly for each instance of that noun.

Examples:

• 날마다 = every day
• 주말마다 = every weekend
• 수업마다 = every class
• 해마다 = every year

So in this sentence:

• 아침마다 = every morning

It is very common for talking about habits and routines.

에서 is used because the park is the place where the action happens.

• 공원에서 = at/in the park

In Korean, 에서 is commonly used for the location where an action takes place.

Examples:

• 학교에서 공부해요. = I study at school.
• 집에서 먹어요. = I eat at home.
• 공원에서 조깅해요. = I jog in the park.

This is different from 에, which is often used for:

• destination: 학교에 가요 = I go to school
• time: 아침에 = in the morning
• existence with 있다/없다

So here, because jogging is an action happening in the park, 에서 is correct.

조깅 is a noun borrowed from English jogging. In Korean, many borrowed action nouns become verbs by combining with 하다, which means to do.

So:

• 조깅하다 = to jog
• 조깅해요 = jog / jogs / am jogging / is jogging, depending on context

This comes from:

• 조깅하다
• polite present form: 조깅해요

Many Korean verbs work like this:

• 공부하다 = to study
• 운동하다 = to exercise
• 청소하다 = to clean
• 조깅하다 = to jog

So 조깅해요 literally has the structure does jogging, but in natural English it is just jogs or is jogging.

조깅해요 is in the polite informal style, often called the 해요체 style.

It is very common in everyday conversation when speaking politely.

Basic comparison:

• 조깅합니다 = more formal
• 조깅해요 = polite everyday speech
• 조깅해 = casual, used with close friends, younger people, etc.

So this sentence is polite and natural for general conversation.

Korean is generally an SOV language:

• Subject
• Object
• Verb

That means the verb usually comes at the end.

This sentence is structured like:

• 동생이 = subject
• 아침마다 = every morning
• 공원에서 = in the park
• 조깅해요 = jogs

So the basic order is: Younger sibling + every morning + in the park + jogs

English usually puts the verb earlier, but Korean normally saves the verb until the end.

Yes, Korean word order is more flexible than English, especially with time and place expressions, because particles show each word’s role.

For example, these can all be natural depending on emphasis:

• 동생이 아침마다 공원에서 조깅해요.
• 아침마다 동생이 공원에서 조깅해요.
• 공원에서 동생이 아침마다 조깅해요.

However, the verb usually still stays at the end.

Even though the order can change, the original sentence sounds very natural and neutral.

In Korean, the present tense can cover several meanings that English separates.

조깅해요 can mean:

• jogs
• is jogging
• sometimes a general present meaning depending on context

Because the sentence includes 아침마다 = every morning, the natural meaning is a habit:

• My younger sibling jogs in the park every morning.

Without a repeating time expression, it could sometimes mean is jogging depending on context.

Usually 동생 by itself often implies my younger sibling or someone’s younger sibling, depending on context.

In Korean, possessives like my are often omitted when they are obvious.

So in many situations:

• 동생이 naturally means my younger sibling if the speaker is talking about their own family member

If needed, Korean can say:

• 제 동생이 = my younger sibling
• 우리 동생이 = my younger sibling, literally our younger sibling, which is also very common in Korean

So yes, in many normal contexts this sentence would be understood as My younger sibling jogs in the park every morning.

Yes. A very common native-Korean-style alternative is 뛰다, which means to run.

For example:

• 동생이 아침마다 공원에서 뛰어요. = My younger sibling runs in the park every morning.

The difference is:

• 조깅하다 specifically suggests jogging
• 뛰다 means run, which can be broader

So 조깅해요 is perfectly natural, especially in modern Korean, but 뛰어요 is also common depending on the exact meaning you want.