Foundations of Korean Grammar

Korean Language Overview Introduction to Korean Grammar Korean is a language with a very different structure from English. To understand how it works, we need to learn some key features right from the start. Korean is an agglutinative language, which means it builds grammatical meaning by adding small units (called affixes) to words—mostly at the end. The language also follows a verb-final word order, where the verb typically comes at the end of the sentence. These structural features organize everything else we'll discuss. Another important feature is that modifiers always come before the words they modify. This is the opposite of English, where we often say "a big house," but in Korean, the ordering is the same—the modifier comes first. This consistent ordering carries throughout the language. Classification of Korean Words (The 9 Pumsa System) Korean grammar organizes words into nine major categories called pumsa (품사). This classification system is essential for understanding how Korean sentences work. These nine categories fall into three main groups based on how they function: Content Words carry the main meaning of sentences: Substantives (명사, myeongsa) include nouns, pronouns, and number words—basically anything that names or refers to things Verbs (동사, dongsa) express actions and states, including both action verbs and descriptive verbs Modifiers (관형사, gwanhyeongsa) are words like "this," "that," or "my" that point to or describe nouns without changing form Adverbs (부사, busa) modify verbs and adjectives, indicating how, when, or how often something happens The key distinction in Korean is that descriptive verbs (형용사, hyeongyongsa) are classified as verbs, not as a separate adjective category. This is different from English, where "big" and "run" are completely different parts of speech. In Korean, words like "크다" (to be big) function similarly to action verbs grammatically, even though they describe qualities rather than actions. Nouns: Basic Properties and Sources Korean nouns have no grammatical gender. Unlike French or Spanish, where nouns are masculine or feminine, Korean nouns carry no gender information. This makes Korean simpler in this respect—you don't need to memorize gender with every noun. Another key feature is that plurality is usually not marked on nouns themselves. While Korean has a plural marker 들, it is optional and typically omitted when the context already makes it clear that something is plural. For example, you can say "책을 읽어요" (I read book) to mean either "I read a book" or "I read books," depending on context. Adding 들 is possible—"책들을 읽어요"—but unnecessary if plurality is already understood. Korean nouns come from two main sources: Native Korean words and Sino-Korean words (words borrowed from Chinese). For example, 나라 (native) means "country," while 문화 (Sino-Korean) means "culture." These two sources coexist throughout the vocabulary, and sometimes the same concept has both a native and Sino-Korean form. This distinction sometimes matters for usage—Sino-Korean numerals, for instance, are typically used for larger numbers and formal contexts. Pronouns and Honorifics Pronouns in Korean require special attention because they are deeply sensitive to honorifics—the grammatical system that expresses respect and social relationships. The first-person singular pronoun has two forms: 나 (informal) and 저 (honorific). Which form you use depends entirely on the social context and the level of formality you're adopting. In casual speech with friends, you use 나; in formal or respectful situations, you use 저. Second-person singular pronouns are more complicated because they are generally avoided, especially in honorific contexts. Instead of directly saying "you," Korean speakers often use titles, names, or other indirect references. This reflects the cultural importance of politeness and respect in Korean communication. Modifiers: Determiners and Indeclinable Adjectives Modifiers in Korean fall into two types. Determiners (관형사, gwanhyeongsa) are words like "this," "that," "my," and "every" that point to or specify nouns. Importantly, determiners can replace pronouns entirely, which makes Korean heavily context-driven. Instead of saying "I go to my house," a Korean speaker might just say "나의 집에 가요" (my house go) where the determiner 나의 (my) stands in place of a full pronoun. Indeclinable adjectives behave like adjectives in meaning but are grammatically different because they do not conjugate. Unlike descriptive verbs (which we learned are classified as verbs), these words don't change form when tenses or other grammatical features need to be expressed. They appear as modifiers right before nouns. Adverbs: Modifying Actions and Qualities Adverbs (부사, busa) are words that modify verbs and adjectives by indicating manner, frequency, degree, or time. An example is 또 (again or also), which modifies the action expressed by the verb. Adverbs in Korean typically appear right before the verb or adjective they modify, fitting into the general pattern that modifiers precede what they modify. The Numeral System: Native Korean and Sino-Korean One of the most distinctive features of Korean is that it has two completely separate numbering systems, each with its own purposes. Understanding when to use each is crucial for speaking Korean correctly. Native Korean numerals (하나, 둘, 셋, 넷...) are used for counting physical objects and for dates. For example, if you're counting apples, you say "사과 하나" (one apple). When stating your age or counting days, you also use native numerals. Sino-Korean numerals (일, 이, 삼, 사...) are borrowed from Chinese and are used for larger numbers, formal contexts, and situations where precise mathematical clarity is needed. Telephone numbers, prices above a certain value, and official documents typically use Sino-Korean numerals. Numbers are grouped by myriads (groups of 10,000) rather than thousands, which is fundamentally different from English. Where English groups by thousands (1,000; 1,000,000), Korean groups by myriads (만, 10,000; 억, 100,000,000). This means that 10,000 is expressed as "일 만" (one myriad) rather than "십 천" (ten thousand). This grouping system can initially seem confusing to English speakers, but it becomes natural with practice. Number and Plurality: Context Over Grammar Korean nouns themselves don't carry grammatical number—they don't inherently indicate whether something is singular or plural. Instead, context provides the number interpretation. A sentence like "학생이 왔어요" could mean either "A student came" or "The student came" depending on context. When you do want to explicitly mark plurality, the particle 들 can appear on predicates, verbs, or objects. For example, "학생들이 왔어요" (Students came) makes the plural explicit. However, this is optional—if context makes plurality clear, 들 is simply omitted. Another way to express plurality, particularly with numbers, is through the particle 씩, which adds an "each" meaning to numerals. For example, 하나씩 means "one each." This creates a distributive plural reading, where the action applies to multiple items individually. Instead of "three apples" (just a quantity), 사과 세 개씩 suggests "three apples each" (distributed across individuals or groups).