Overview
The verb 하다 is one of the most fundamental and versatile verbs in Korean, meaning 'to do' or 'to make.' When combined directly with certain nouns, especially many Sino-Korean nouns, it transforms them into verbs. This N+하다 structure is incredibly productive, forming a vast number of common action verbs in the Korean language.
Usage
This pattern takes a noun (N) and attaches 하다 to it, creating a new verb that means 'to do/perform/engage in' the action or activity represented by the noun. For instance, if '공부' means 'study' (noun), '공부하다' means 'to study' (verb). The noun typically denotes an action, activity, or a state that can be 'done' or 'performed.' When the N+하다 verb is transitive, the object of the action is usually marked with the object particle 을/를 before the noun part of the compound (e.g., 숙제를 하다 - to do homework, 한국어를 공부하다 - to study Korean).
Conjugation Rules
The 하다 part of the N+하다 compound conjugates just like any regular verb. The noun itself remains unchanged. Here are some common conjugations for the verb '하다':
- Present Tense (Informal Polite): 해요 (e.g., 공부해요 - I study)
- Present Tense (Formal Polite): 합니다 (e.g., 공부합니다 - I study)
- Past Tense (Informal Polite): 했어요 (e.g., 공부했어요 - I studied)
- Past Tense (Formal Polite): 했습니다 (e.g., 공부했습니다 - I studied)
- Future Tense (Informal Polite): 할 거예요 (e.g., 공부할 거예요 - I will study)
- Future Tense (Formal Polite): 할 겁니다 (e.g., 공부할 겁니다 - I will study)
Knowledge Plus
- Productivity: The N+하다 pattern is one of the most common ways to form new verbs in Korean. Learning a new Sino-Korean noun often means you can immediately form a verb by adding 하다.
- Sino-Korean Nouns: This pattern is overwhelmingly used with Sino-Korean nouns (한자어), such as 운동 (exercise) -> 운동하다 (to exercise), 요리 (cooking) -> 요리하다 (to cook), 청소 (cleaning) -> 청소하다 (to clean), 사랑 (love) -> 사랑하다 (to love), 걱정 (worry) -> 걱정하다 (to worry).
- Native Korean Nouns: While less common, some native Korean nouns also combine with 하다, such as 일 (work) -> 일하다 (to work), 말 (speech) -> 말하다 (to speak).
- Verb vs. Adjective: It's crucial to distinguish between N+하다 verbs and N+하다 adjectives. While many N+하다 forms create verbs (denoting an action), others create adjectives (denoting a state or quality). For example:
- Verbs: 공부하다 (to study), 운동하다 (to exercise), 요리하다 (to cook)
- Adjectives: 행복하다 (to be happy), 건강하다 (to be healthy), 중요하다 (to be important)
The context and the meaning of the noun usually help determine whether it's an action verb or a descriptive adjective.