A1 Verb Basics 16 min read Easy

Identifying the Verb Stem (어간)

Remove the final from any dictionary verb or adjective to reveal its essential, unchanging stem.

Grammar Rule in 30 Seconds

The verb stem (어간) is the unchanging part of a verb that remains after you remove the '-다' ending.

  • Identify the dictionary form: '먹다' (to eat).
  • Remove the '-다' suffix: '먹다' becomes '먹'.
  • The remaining part '먹' is your stem used for all conjugations.
Dictionary Form (Verb + 다) - 다 = Verb Stem (어간)

Overview

In Korean, verbs (동사, dongsa) and adjectives (형용사, hyeong-yongsa), often collectively referred to as descriptive verbs or processive verbs, form the backbone of sentence structure, conveying actions, states, and qualities. Unlike highly inflected languages where the entire word might change, Korean utilizes a consistent core known as the verb stem (어간, eo-gan). This stem carries the fundamental, unchanging meaning of the word.

Various grammatical endings (어미, eomi) then attach to this stem, providing all necessary grammatical information such as tense, politeness level, mood, and sentence type.

Mastering the identification of the verb stem is the single most critical foundational skill for any Korean learner. It is the prerequisite for all subsequent conjugations and sentence constructions, making it indispensable for accurate and fluent expression. Without correctly isolating this stable root, you cannot properly apply any grammatical rule, leading to errors and potential misunderstandings.

Conjugation Table

Dictionary Form Meaning Process Verb Stem (어간) Romanization
:------------------ :------------------- :------------------------ :----------------- :---------------
가다 to go 가다 - ga
오다 to come 오다 - o
먹다 to eat 먹다 - meok
입다 to wear 입다 - ip
공부하다 to study 공부하다 - 공부하 gongbuha
사랑하다 to love 사랑하다 - 사랑하 sarangha
예쁘다 to be pretty 예쁘다 - 예쁘 yeppeu
크다 to be big / tall 크다 - keu
작다 to be small 작다 - jak
재미있다 to be interesting 재미있다 - 재미있 jaemiit

How This Grammar Works

Korean grammar is fundamentally agglutinative, meaning that grammatical functions are expressed by adding suffixes to a stable base form. The verb stem (어간) is this stable semantic component, carrying the core meaning: "eat," "go," "be pretty." The dictionary form's is merely a placeholder, signaling that the word is in its uninflected, dictionary entry state. It functions much like an English infinitive "to," but unlike "to eat," the Korean dictionary form 먹다 is almost never used directly in conversational speech.
Once the is removed, the resulting verb stem becomes the active, functional unit. Grammatical endings (어미) then attach to this stem, providing all necessary contextual information about the action or state. This includes the tense (past, present, future), politeness level (informal, polite, formal), mood (indicative, imperative, hortative), and sentence type (declarative, interrogative).
For example, from the stem (to eat), you can form 먹어요 (I eat, polite present), 먹었습니다 (I ate, formal past), or 먹을까요? (Shall we eat?, polite interrogative).
This systematic division of labor—meaning in the stem, grammar in the ending—makes Korean grammar highly regular and predictable once this core principle is understood. The stability of the verb stem simplifies conjugation significantly, as you only need to learn how endings interact with the final consonant or vowel of the stem, rather than memorizing entirely new word forms for each conjugation. This foundational understanding is key to unlocking the entire Korean linguistic system.

Formation Pattern

1
The process for identifying the verb stem (어간) is remarkably consistent and straightforward, applying uniformly to all Korean verbs and adjectives without exception. This unwavering rule is one of the most reliable principles for beginner learners.
2
Identify the Dictionary Form: All Korean verbs and adjectives appear in dictionaries ending with . This is solely a grammatical marker, signifying the word's uninflected state. For instance, 하다 (to do), 읽다 (to read), 아름답다 (to be beautiful).
3
Remove : Simply detach and discard the final from the identified dictionary form. This step is non-negotiable and applies universally.
4
The Remainder is the Verb Stem: The characters left after removing constitute the verb stem (어간). This is the base to which all subsequent grammatical endings (어미) will attach to form grammatically complete words.
5
Let's apply this pattern with diverse examples. For 하다 (to do), removing yields the stem . From this, you form conjugations like 해요 (polite present) or 합니다 (formal present). For 읽다 (to read), the stem is , which combines with endings to form 읽어요 (polite present) or 읽습니다 (formal present). Even for longer words like 아름답다 (to be beautiful), the stem is 아름답. While 아름답 undergoes an irregular change when encountering certain endings (e.g., 아름다워요 with -아요), the initial stem identification process remains strictly 아름답다 - = 아름답. This consistent procedure is your gateway to all Korean conjugation.

When To Use It

You must identify the verb stem (어간) every single time you intend to use a verb or adjective in a communicative context. The dictionary form, ending in , is purely a reference entry; it holds no communicative function on its own. In any practical real-world scenario—speaking, writing, texting, or even thinking in Korean—you will always begin with the verb stem and then append an appropriate grammatical ending.
There are virtually no exceptions to this rule in everyday conversation.
Consider these practical applications: when you want to ask "Are you going?" from 가다 (to go), you first identify the stem . Then, you attach the appropriate interrogative polite ending, forming 가세요?. To state "It's delicious" from 맛있다 (to be delicious), you isolate the stem 맛있.
Subsequently, you add the polite present ending -어요, resulting in 맛있어요. Similarly, when discussing "studying" from 공부하다 (to study), you derive the stem 공부하, which then conjugates to 공부해요 (I study, polite present) by attaching and contracting -아요. These examples demonstrate that the verb stem is the indispensable starting point for all active linguistic output.
Your ability to extract the stem quickly and accurately directly impacts your fluency and grammatical correctness.

When Not To Use It

It is crucial to understand that while identifying the verb stem (어간) is the essential first step for conjugation, the resulting bare stem itself is almost never used alone in a complete sentence in standard Korean. Using a verb stem in isolation typically results in an incomplete, ungrammatical, or highly informal and context-dependent expression.
The bare verb stem is a raw component, an unfinished word that always requires an ending (어미) to be a grammatically complete and meaningful utterance. For example, if you derive the stem from 먹다 (to eat), simply saying in isolation would sound abrupt and incomplete, akin to saying "eat" as an instruction without context in English, rather than a full statement like "I eat." Similarly, (from 가다, to go) conveys the core meaning but lacks any grammatical information regarding tense, politeness, or subject; it cannot function as a full sentence like 가요 (I go/You go).
Exceptions are extremely limited and typically occur in highly abbreviated or specialized contexts: in dictionary entries where brevity is key, in headlines, or in very informal, often elliptical, conversational snippets where the context is overwhelmingly clear and an ending is implied. For practical, communicative purposes, your guiding principle must be: always attach an ending to the verb stem. The stem is the functional core, but it is incomplete without its grammatical counterpart.

Common Mistakes

Beginners frequently encounter specific pitfalls when learning to identify and utilize Korean verb stems. Understanding these common errors and their underlying reasons can significantly accelerate your learning process.
  • The "Sticky " Syndrome: The most prevalent mistake is failing to fully remove before attempting to attach an ending. Learners might mistakenly produce forms like 먹다어요 instead of the correct 먹어요 or 가다세요 instead of 가세요. This results in grammatically overloaded and nonsensical words, as is a dictionary marker with no place in conjugated forms. Remember, serves no functional purpose once you are conjugating.
  • Premature Stem Truncation: With longer verbs, particularly 하다 verbs, learners sometimes mistakenly remove too much of the stem. For instance, with 공부하다 (to study), some might incorrectly assume the stem is just 공부 because 공부 means "study" (noun) and 하다 means "to do." However, the full verb stem is 공부하. If you only use 공부, you are treating the noun 공부 as a verb, which requires different grammatical structures. You must remove only , preserving all preceding characters as part of the stem. Examples include 사랑하다 (to love) -> 사랑하, 운동하다 (to exercise) -> 운동하.
  • Confusing Stem-Final Character with Removal: Learners sometimes conflate the removal with the stem's final character (whether it ends in a vowel or consonant), which determines the choice between certain ending variants (e.g., -아요 vs. -어요). This consideration comes after has been removed. Do not allow the presence of to distract from the simple rule: always remove first. Only then examine the final character of the newly formed stem to select the appropriate ending variant. The process is strictly sequential.
  • Overlooking Compound Stems: Many Korean verbs are formed by combining a noun with 하다 (to do/be), such as 청소하다 (to clean, from 청소 (cleaning) + 하다 (to do)). The entire 청소하 part constitutes the verb stem, not just . This ensures the compound meaning is preserved during conjugation. When you encounter any word ending in 하다, its stem will consistently end in . Recognizing these complete X하 stems is vital for accurate conjugation.

Memory Trick

A highly effective memory trick for internalizing the process of identifying Korean verb stems is to conceptualize as a "Disposable Packaging." Think of the dictionary form of a Korean verb or adjective, like 먹다 (to eat), as a product still in its original packaging. The is this packaging. To actually use the product—to make 먹다 an active part of a sentence—you must remove the packaging () to access the functional core, which is the verb stem ().

Another useful analogy is to view as a "Detachable Label." Imagine a label on a piece of clothing or a product. The label provides information (like the dictionary definition), but it is not part of the item's core function. You simply peel off the label, and what remains is the pure, functional verb stem ready for use. This mental image reinforces the core principle: is solely a marker for the dictionary form and must be removed to access the usable verb stem for conjugation. It is a simple, non-negotiable initial step in every conjugation.

Real Conversations

The verb stem is the invisible but ubiquitous foundation of nearly every verbal interaction in Korean. Native speakers instinctively perform the " removal" process without conscious thought. You will virtually never hear someone use the dictionary form ( ending) in a natural conversational context, unless for highly specific stylistic effects or when explicitly citing a dictionary entry. Observe how verb stems appear in various modern communicative settings:

- Formal Speech (하십시오체, hasipsio-che): Even in the most formal settings, such as news broadcasts or military address, the stem is fundamental. When introducing oneself using 만나다 (to meet), the stem 만나 is extracted, then combined with the formal ending -ㅂ니다 to form 만납니다 (I meet/am meeting). Similarly, 먹다 (to eat) becomes 먹습니다.

- Polite Speech (해요체, haeyo-che): This is the most common and versatile speech style, suitable for most everyday interactions. 먹다 (to eat) becomes 먹어요 (I eat/am eating). 자다 (to sleep) becomes 자요 (I sleep/am sleeping). 공부하다 (to study) becomes 공부해요 (I study/am studying), where the stem 공부하 combines with the polite present -아요 (contracting to 해요). In all cases, is removed, and the polite ending attaches to the stem.

- Informal Speech (해체, hae-che) / Texting: In casual conversations among friends or in digital communication, verb stems are still the absolute starting point, albeit with different, often abbreviated, endings. A friend might text: 나 지금 가! (I'm going now!) from 가다 (to go) -> stem . Or: 어제 영화 봤어? (Did you watch the movie yesterday?) from 보다 (to see/watch) -> stem . Even the shortest, most casual utterances are directly built upon the verb stem, with only minimal endings.

- Social Media: On platforms like Instagram or Twitter, you will constantly encounter conjugated forms derived from verb stems. A picture caption might read: 너무 예뻐요! (So pretty!) from 예쁘다 (to be pretty) -> stem 예쁘. Or a farewell: 다음에 또 만나요! (Let's meet again next time!) from 만나다 (to meet) -> stem 만나. The stem provides the core meaning, while the ending conveys the specific context, tense, and desired nuance. This consistent application reinforces the stem as the enduring, usable core of the word.

Contrast With Similar Patterns

To ensure clarity and prevent common points of confusion, it is essential to distinguish the verb stem (어간) from other related linguistic concepts in Korean.
  • Verb Stem (어간) vs. Dictionary Form (사전형): This is the most crucial distinction. The dictionary form (e.g., 가다, 먹다, 예쁘다) is the standard entry in a dictionary, always ending in . It serves as a label or reference point, not an active word for communication. The verb stem (e.g., , , 예쁘) is the functional core derived by removing . It is the part to which all grammatical endings attach to form grammatically complete and usable sentences. The dictionary form 자다 (to sleep) is unusable in conversation; its stem is ready for endings like -아요 to become 자요.
  • Verb Stem vs. Noun Root in 하다 Verbs: Many Korean verbs are formed by taking a noun and appending 하다 (to do/be). For example, 공부 (study, noun) + 하다 (to do) = 공부하다 (to study, verb). In these cases, 공부하 is the complete verb stem. 공부 by itself is the noun root or simply the noun. While related, they serve distinct grammatical functions. You attach verbal endings to 공부하 to conjugate (e.g., 공부해요), but you use 공부 as a standalone noun or with nominal particles (e.g., 공부를 해요, "do studies"). Incorrectly identifying 공부 as the verb stem of 공부하다 is a frequent error.
  • Verb Stem vs. English Infinitive: While the Korean dictionary form is often conceptually linked to the English infinitive ("to eat," "to go"), the Korean verb stem is morphologically distinct. The English infinitive can stand alone in certain contexts (e.g., "To err is human"), but the bare Korean verb stem almost never can. The Korean stem is more akin to the bare verb base that appears before inflection in English (e.g., "eat" in "I eat"), but it is a distinct morphological unit that must combine with an ending to be grammatically sound. This constant requirement for an ending is a key differentiating factor.
  • Irregular Verbs (불규칙 동사, bulgyuchik dongsa): Later in your studies, you will encounter irregular verbs (e.g., 듣다, 돕다, 낫다, 짓다). These verbs have stems that undergo a predictable phonetic change before an ending is attached, but only when meeting specific vowel-initial endings. Crucially, the initial step of removing to find the base stem remains absolutely identical and consistent. The irregularity is a secondary modification that occurs to that base stem, not an alteration in how you first identify it. For example, 듣다 (to listen) first gives the stem . When combined with a vowel-initial ending like -어요, undergoes a irregular change to , resulting in 들어요. The removal is always the consistent first step; irregularities are then applied to the resulting stem.

Progressive Practice

1

Consistent and deliberate practice is indispensable for internalizing the process of identifying Korean verb stems, ensuring it becomes an automatic linguistic reflex. This foundational skill requires repetitive engagement to move from conscious effort to subconscious application.

2

- Flashcard Drills: Create physical or digital flashcards. On one side, write the dictionary form (e.g., 먹다); on the other, write the bare verb stem (e.g., ). Rapidly cycle through these, verbally stating the stem as quickly as possible. Mix short, long, and 하다 verbs to build comprehensive recognition. Include romanization on the stem side initially to aid recall, gradually phasing it out.

3

- Stem-Spotting in Context: As you read Korean texts (e.g., simple news articles, webtoons, practice dialogues) or listen to Korean media, make a conscious habit of identifying the verb stem in every conjugated verb or adjective. Mentally (or physically, by highlighting) strip away the ending to reveal the stem. This exercise trains your brain to parse conjugated forms and recognize their fundamental core.

4

- Dictionary Exploration: Periodically open a Korean dictionary (physical or online, such as Naver Dictionary). Randomly select 10-20 verbs or adjectives. For each, explicitly write down its dictionary form, then the operation of removing , and finally the resulting stem. Verify your answer. This reinforces the universal removal rule.

5

- Active Formation from English: Given a list of English infinitives (e.g., "to read," "to sit," "to be quiet"), first recall the corresponding Korean dictionary form. Then, immediately identify its verb stem. For example: "to read" -> 읽다 -> . This bridges your existing linguistic knowledge with the new Korean grammatical structure.

6

- Reverse Engineering Conjugations: Presented with a conjugated Korean word (e.g., 먹었어요, 가겠어요, 예쁩니다), practice reverse engineering it back to its original dictionary form (먹다, 가다, 예쁘다). This requires first isolating the stem by recognizing and mentally removing the ending, then reattaching . This process sharpens your ability to differentiate stems from endings.

7

By engaging in these varied yet focused exercises, the process of isolating the verb stem will transition from a deliberate analytical task to an automatic and intuitive linguistic reflex, forming a solid base for advanced grammatical constructions.

Quick FAQ

  • Q: Does every Korean verb and adjective truly end in in its dictionary form?
  • A: Yes, this is a 100% consistent and fundamental rule in standard Korean morphology. If a word does not end in , it is either not in its dictionary form or it belongs to a different part of speech, such as a noun or adverb.
  • Q: Is the stem identification process the same for adjectives as it is for verbs?
  • A: Precisely. In Korean grammar, adjectives (형용사, hyeong-yongsa), often termed descriptive verbs, behave identically to action verbs (동사, dongsa) when it comes to forming the verb stem. You remove from 예쁘다 (to be pretty) to get 예쁘, just as you would for 가다 (to go) to get . Their conjugation patterns are nearly identical from this starting point.
  • Q: Can a verb stem ever be used by itself in a sentence?
  • A: Generally, no. A bare verb stem is grammatically incomplete and would sound unnatural in almost all communicative contexts. It always requires a grammatical ending to form a complete thought or sentence. Exceptions are extremely rare and highly specialized, typically limited to dictionary entries or very concise informal implications where the ending is clearly understood from context.
  • Q: What is the shortest possible verb stem in Korean?
  • A: Single-character stems are common, especially for very frequent, basic verbs. Examples include (from 가다, to go), (from 오다, to come), (from 자다, to sleep), (from 보다, to see), and (from 주다, to give).
  • Q: How long can a verb stem be?
  • A: Verb stems can be quite long, particularly with compound verbs or 하다 verbs derived from multi-syllable nouns. For instance, 아르바이트하다 (to work a part-time job) has the stem 아르바이트하. The length of the stem does not alter the simple removal rule.
  • Q: Why are verbs and adjectives sometimes grouped together as "conjugation words"?
  • A: This term reflects their shared morphological behavior. Both verbs and adjectives in Korean undergo the same process of attaching various grammatical endings to their stems to express functions like tense, mood, and politeness. This common inflectional system distinguishes them from nouns and other parts of speech that follow different grammatical rules.

Verb Stem Identification

Dictionary Form Remove -다 Verb Stem (어간)
가다
가다 - 다
먹다
먹다 - 다
자다
자다 - 다
읽다
읽다 - 다
공부하다
공부하다 - 다
공부하
마시다
마시다 - 다
마시
보다
보다 - 다
듣다
듣다 - 다

Meanings

The verb stem is the core, immutable part of a Korean verb. It serves as the foundation for all grammatical endings and conjugations.

1

Base Identification

Isolating the root for conjugation.

“먹다 -> 먹”

“자다 -> 자”

Reference Table

Reference table for Identifying the Verb Stem (어간)
Form Structure Example
Affirmative
Stem + Ending
먹어요
Negative
안 + Stem + Ending
안 먹어요
Question
Stem + Ending?
먹어요?
Past
Stem + 았/었 + Ending
먹었어요
Future
Stem + 겠 + Ending
먹겠어요
Polite
Stem + ㅂ니다
먹습니다
Casual
Stem + 아/어
먹어

Formality Spectrum

Formal
먹습니다.

먹습니다. (Daily life)

Neutral
먹어요.

먹어요. (Daily life)

Informal
먹어.

먹어. (Daily life)

Slang
먹어.

먹어. (Daily life)

Verb Anatomy

먹다

Stem

  • Root

Suffix

  • Ending

Examples by Level

1

먹다 -> 먹

To eat -> eat (stem)

2

가다 -> 가

To go -> go (stem)

3

자다 -> 자

To sleep -> sleep (stem)

4

보다 -> 보

To see -> see (stem)

1

공부하다 -> 공부하

To study -> study (stem)

2

읽다 -> 읽

To read -> read (stem)

3

마시다 -> 마시

To drink -> drink (stem)

4

듣다 -> 듣

To listen -> listen (stem)

1

만들다 -> 만들

To make -> make (stem)

2

걷다 -> 걷

To walk -> walk (stem)

3

웃다 -> 웃

To laugh -> laugh (stem)

4

앉다 -> 앉

To sit -> sit (stem)

1

돕다 -> 돕

To help -> help (stem)

2

어렵다 -> 어렵

To be difficult -> difficult (stem)

3

빠르다 -> 빠르

To be fast -> fast (stem)

4

예쁘다 -> 예쁘

To be pretty -> pretty (stem)

1

푸르다 -> 푸르

To be blue -> blue (stem)

2

누르다 -> 누르

To press -> press (stem)

3

흐르다 -> 흐르

To flow -> flow (stem)

4

기르다 -> 기르

To raise -> raise (stem)

1

치르다 -> 치르

To pay/undergo -> pay (stem)

2

따르다 -> 따르

To follow -> follow (stem)

3

부르다 -> 부르

To call/sing -> call (stem)

4

고르다 -> 고르

To choose -> choose (stem)

Easily Confused

Identifying the Verb Stem (어간) vs Dictionary form vs Stem

Learners use the dictionary form in sentences.

Identifying the Verb Stem (어간) vs Stem vs Ending

Learners confuse the stem with the ending.

Identifying the Verb Stem (어간) vs Regular vs Irregular

Learners apply regular rules to irregular stems.

Common Mistakes

먹다요

먹어요

You kept the -다 ending.

가다아요

가요

You kept the -다 ending.

자다요

자요

You kept the -다 ending.

보다요

봐요

You kept the -다 ending.

공부하다아요

공부해요

Incorrect stem processing.

읽다어요

읽어요

Kept -다.

마시다아요

마셔요

Kept -다.

만들다아요

만들어요

Kept -다.

걷다아요

걸어요

Kept -다.

웃다아요

웃어요

Kept -다.

치르다아요

치러요

Kept -다.

부르다아요

불러요

Kept -다.

고르다아요

골라요

Kept -다.

Sentence Patterns

나는 ___을/를 먹어요.

어디에 ___요?

___ 공부해요.

___ 읽어요.

Real World Usage

Texting constant

뭐 해?

Social Media very common

공부해요!

Job Interview common

열심히 하겠습니다.

Ordering Food constant

이거 주세요.

Travel occasional

어디로 가요?

Food Delivery App common

주문하세요.

💡

The 1-Second Rule

Just cover the with your finger. What you see is the stem. Don't overthink it!
⚠️

The '다' Trap

Never use the in a real sentence unless you are writing a formal essay or talking to yourself like a robot.
🎯

Focus on the Ending

Once you find the stem, look at its last vowel or consonant. This will tell you *which* conjugation rule to apply next.

Smart Tips

Identify the stem immediately.

먹다

Check for irregular stems.

듣다 들어요

Use the correct register.

먹다 먹어요

Practice the stem-ending flow.

가다 가요

Pronunciation

먹- (meok)

Stem final consonant

The stem's final sound affects the following ending.

Flat

먹- (low)

Neutral statement

Memorize It

Mnemonic

Think of the verb as a tree. The '-다' is the dead leaf you must rake away to see the strong trunk (the stem) underneath.

Visual Association

Imagine a giant pair of scissors cutting the '-다' off the end of a word written on a wooden block.

Rhyme

When you see the '-다' at the end, chop it off to be your friend!

Story

A chef named 'Da' always stands at the end of the kitchen line. To start cooking, you must push 'Da' out of the way. Once 'Da' is gone, the real ingredients (the stems) are ready to be mixed into a delicious sentence.

Word Web

먹다가다자다보다읽다공부하다

Challenge

Take 5 verbs from your dictionary and write down their stems in 60 seconds.

Cultural Notes

The distinction between formal and informal speech is deeply tied to the verb stem and its endings.

Similar structure, but different honorific endings.

Informal speech is common among young Korean-Americans.

The '-다' ending is a historical marker for the indicative mood in Korean.

Conversation Starters

What is the stem of '먹다'?

Can you conjugate '자다'?

Why do we remove '-다'?

Is '공부하' a stem?

Journal Prompts

Write 5 verbs and their stems.
Describe your day using 3 verbs.
Explain the importance of the stem.
Compare regular and irregular stems.

Common Mistakes

Incorrect

Correct


Incorrect

Correct


Incorrect

Correct


Incorrect

Correct

Test Yourself

What is the stem of '먹다'?

먹다 -> ___

✓ Correct! ✗ Not quite. Correct answer:
Remove -다.
Which is the correct stem? Multiple Choice

가다

✓ Correct! ✗ Not quite. Correct answer:
Remove -다.
Fix the error. Error Correction

Find and fix the mistake:

먹다요

✓ Correct! ✗ Not quite. Correct answer: 먹어요
Remove -다.
Transform to stem. Sentence Transformation

자다

✓ Correct! ✗ Not quite. Correct answer:
Remove -다.
Match verb to stem. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer:
Remove -다.
Which is the correct stem? Multiple Choice

공부하다

✓ Correct! ✗ Not quite. Correct answer: 공부하
Remove -다.
What is the stem of '마시다'?

마시다 -> ___

✓ Correct! ✗ Not quite. Correct answer: 마시
Remove -다.
Fix the error. Error Correction

Find and fix the mistake:

듣다아요

✓ Correct! ✗ Not quite. Correct answer: 들어요
Irregular stem.

Score: /8

Practice Exercises

8 exercises
What is the stem of '먹다'?

먹다 -> ___

✓ Correct! ✗ Not quite. Correct answer:
Remove -다.
Which is the correct stem? Multiple Choice

가다

✓ Correct! ✗ Not quite. Correct answer:
Remove -다.
Fix the error. Error Correction

Find and fix the mistake:

먹다요

✓ Correct! ✗ Not quite. Correct answer: 먹어요
Remove -다.
Transform to stem. Sentence Transformation

자다

✓ Correct! ✗ Not quite. Correct answer:
Remove -다.
Match verb to stem. Match Pairs

읽다

✓ Correct! ✗ Not quite. Correct answer:
Remove -다.
Which is the correct stem? Multiple Choice

공부하다

✓ Correct! ✗ Not quite. Correct answer: 공부하
Remove -다.
What is the stem of '마시다'?

마시다 -> ___

✓ Correct! ✗ Not quite. Correct answer: 마시
Remove -다.
Fix the error. Error Correction

Find and fix the mistake:

듣다아요

✓ Correct! ✗ Not quite. Correct answer: 들어요
Irregular stem.

Score: /8

Practice Bank

10 exercises
Find the stem of this verb. Fill in the Blank

The verb stem of `오다` (to come) is ___.

✓ Correct! ✗ Not quite. Correct answer:
Identify the error. Error Correction

Dictionary: `마시다`. Student's Stem: `마시`. Is this correct?

✓ Correct! ✗ Not quite. Correct answer: Correct
Identify the stem from this sentence. Sentence Reorder

In the sentence '책을 읽어요', which part is the stem?

✓ Correct! ✗ Not quite. Correct answer:
What is the stem of 'To buy' in Korean? Translation

To buy = `사다`. What is the stem?

✓ Correct! ✗ Not quite. Correct answer:
Select the correct stem for 'To be cheap'. Multiple Choice

`싸다` (to be cheap). The stem is:

✓ Correct! ✗ Not quite. Correct answer:
Match the verb to its stem. Match Pairs

Match the pairs:

✓ Correct! ✗ Not quite. Correct answer: 가다:가
Identify the stem. Fill in the Blank

`배고프다` (to be hungry) -> Stem: ___

✓ Correct! ✗ Not quite. Correct answer: 배고프
Which verb stem ends in a consonant? Multiple Choice

Pick the consonant stem:

✓ Correct! ✗ Not quite. Correct answer:
Fix the mistake. Error Correction

I want to conjugate `놀다`. I keep `다` and add `요`. Correct?

✓ Correct! ✗ Not quite. Correct answer: No, remove `다` first.
Find the stem. Translation

To meet = `만나다`. Stem = ?

✓ Correct! ✗ Not quite. Correct answer: 만나

Score: /10

FAQ (8)

The stem is the base of the verb after removing -다.

It is required for all conjugations.

Regular stems don't, but irregular ones do.

No, the dictionary form includes -다.

Use flashcards and conjugation drills.

No, some are irregular.

Only in very casual speech.

Look up the dictionary form.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

Spanish moderate

Infinitive endings (-ar, -er, -ir)

Korean stems are more stable.

French moderate

Infinitive endings (-er, -ir, -re)

Korean is agglutinative.

German moderate

Infinitive ending (-en)

German stems change for person.

Japanese partial

Dictionary form (-u)

Korean stem is more distinct.

Arabic low

Root system

Korean is not root-based.

Chinese none

None

Chinese is isolating.

Learning Path

Prerequisites

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