Korean grammar Study Guide

📖 Core Concepts Agglutinative, verb‑final language – grammatical information is added as suffixes; the verb always closes the clause (S O V order). Word categories (9 Pumsa) – Substantives (명사), Verbs (동사) + Descriptive verbs (형용사), Modifiers (관형사), Adverbs (부사). Postpositions / case clitics (조사, 격조사) – attach to nouns to mark grammatical roles (topic, subject, object, location, etc.). Honorific system – honorific suffixes and special pronouns (저, 께) show respect to the subject or addressee. Speech‑level hierarchy – seven levels; verb endings change to match politeness (‑ㅂ/습니까, ‑ㅂ시다, ‑ㅂ세요, etc.). Copula & existence verbs – 이다 “to be”, 있었다/였다 past, 있다/없다 for existence, 계시다 honorific. Numeral systems – Native Korean numerals for objects/dates; Sino‑Korean numerals for larger numbers, dates, money, etc.; numbers group by myriads (10 000). Plurality – No inherent singular/plural; optional marker 들; context‑driven. --- 📌 Must Remember SOV is the default word order. Topic vs. subject: 은/는 = topic, 이/가 = subject. Object marker: 을/를 (after consonant/vowel). Locative: 에 = “to/in”; Source/at: 에서 = “at/from”. Honorific subject: add ‑시‑ to verb stem or use 께서 (subject) / 께 (indirect object). Verb endings encode tense, aspect, mood, speech level, honorific all at once. Negation: 안/아니 (no volition), –지 않다 / –지 못하다 (cannot), –지 말다 (prohibitive). Plural marker 들 is optional and often omitted when plural is clear. Native vs. Sino numerals: native for counting objects & dates; Sino for larger numbers, years, minutes, etc. Three‑place predicate requires subject + indirect object (에게) + direct object (을/를). --- 🔄 Key Processes Build a simple declarative sentence Choose noun → add topic (은/는) or subject (이/가). Add object noun → attach object marker (을/를). Attach verb stem → add appropriate tense‑aspect‑speech‑level ending. Apply honorificity If the subject is a respected person, add ‑시‑ to the verb stem and use 께서/께 for case marking. Form a noun clause Attach -(으)ㅁ (formal) or -기 (casual) to the verb stem; the whole phrase functions as a noun. Create a three‑place predicate Verb stem + ‑다 (base) → add indirect object marker 에게, then direct object marker 을/를, finally the appropriate ending. Conjugate for progressive aspect Take verb stem + ‑고 있다 (ongoing) or ‑는 중이다 (procedural). --- 🔍 Key Comparisons 은/는 vs. 이/가 – Topic marker (contrast, theme) vs. grammatical subject. Native vs. Sino‑Korean numerals – Counting objects/dates vs. large numbers, dates, money. 에 vs. 에서 – Destination/location vs. source/venue of an action. 께서 vs. 이/가 – Honorific subject marker vs. plain subject marker. 들 (plural) vs. no marker – Explicit plural vs. context‑driven singular/plural. --- ⚠️ Common Misunderstandings Plural always needed – “들” is optional; over‑using it can sound unnatural. 은/는 = subject – They mark the topic, not the grammatical subject. Honorifics only for verbs – Pronouns and particles (저, 께) also carry honorific nuance. Gender agreement – Korean nouns have no gender; do not assume masculine/feminine forms. Negation = 안 – “안” is informal; formal negation uses ‑지 않다 or ‑지 못하다. --- 🧠 Mental Models / Intuition Particles as “role tags” – Think of each postposition as a label you stick on a noun to show its function. Verb‑final = “action at the end” – Build the core meaning first, then attach all modifiers as suffixes. Honorific “respect flag” – Adding ‑시‑ or using 께 is like raising a flag to show deference. 10 000‑grouping – Visualize numbers in blocks of 만 (10 000) instead of thousands. --- 🚩 Exceptions & Edge Cases Subject honorific form – Use 께서 instead of 이/가 for respected subjects. ‑로/으로 rule – Use 으로 after a vowel, 로 after a consonant (except after ㄹ, where 로 is used). Location vs. time – 에 can mark both “in/at” a place and a point in time (e.g., 3시 에). Indirect object nuance – 에게 is polite; 한테 is casual; 께 is honorific. --- 📍 When to Use Which Choose native numeral for counting items, age, hours, dates; choose Sino for years, money, large numbers. Use 은/는 when introducing or contrasting a topic; use 이/가 for identifying the grammatical subject. Select 에 for “to/in” a location or a point in time; use 에서 when the action originates from or occurs at a location. Pick speech level ending based on the relationship: formal‑polite (‑ㅂ/습니다), informal‑polite (‑아요/어요), intimate (‑어). Apply 들 only when plurality is not clear from context (e.g., “students” vs. “student”). --- 👀 Patterns to Recognize ‑고 linking → compound verbs or “and”. ‑ㄴ/는 after verb stem → adjective clause (past vs. present). ‑게 → adverbial meaning (“in a way that…”). ‑지 않다 → standard negation pattern. ‑(으)ㅁ / -기 → noun‑clause formation. ‑라 endings → imperative (low politeness). --- 🗂️ Exam Traps Mistaking 은/는 for object – Remember they never replace the object marker 을/를. Wrong honorific verb – Using plain 있다 instead of 계시다 when the subject is respected. Past tense form confusion – 이었/였 depends on vowel harmony; 였다 follows a vowel, 이었다 follows a consonant. Mixing 에 and 에서 – “학교에 가다” (go to school) vs. “학교에서 공부하다” (study at school). Omitting 들 when needed – In sentences where plurality isn’t obvious (e.g., “학생들 가다”), leaving out 들 can make the meaning ambiguous. ---