Start from the dictionary form, then find the stem
Korean dictionaries normally list verbs and descriptive predicates, describing words that work like verbs, with 다 at the end. The everyday polite forms in this lesson suit most polite conversation. To build them, first remove that dictionary ending and identify the stem. 먹다, “to eat,” gives 먹. 가다, “to go,” gives 가. The polite ending then attaches to that stem. Do not keep 다 and simply add 요 after the complete dictionary entry; 먹다요 is not the ordinary form meaning “I eat.”
The polite ending does not change for “I,” “you,” or “they” in the way many European verb endings do. 먹어요 can be understood as “eat” or “eats,” or “am eating” in the right context. Who acts and when must come from the sentence and situation. This lesson focuses on ordinary present descriptions and habits. It does not claim that one form captures every English tense or that politeness is determined only by the final syllable.
먹다 / 먹어요
meokda / meogeoyo
to eat / eat or eats, politely
가다 / 가요
gada / gayo
to go / go or goes, politely
Use the last stem vowel as the regular starting rule
For a regular stem, the last vowel helps choose 아요 or 어요. A stem whose last vowel is ㅏ or ㅗ generally takes 아요. Other vowels generally lead to 어요. In 살다, “to live,” the stem 살 contains ㅏ, so the result is 살아요. In 먹다, the vowel is ㅓ, so the result is 먹어요. Look at the last vowel in the stem, not the final 다 of the dictionary form.
When the stem ends with a consonant, the vowel ending usually appears as an additional written syllable. The final consonant can link to that vowel in pronunciation, while the spelling keeps the stem recognizable. The rule is a starting pattern, not permission to ignore contractions or irregular stems. Learn a new verb with one useful polite form beside its dictionary entry so that a future exception is recorded as part of the word rather than discovered repeatedly by guessing.
살아요.
sarayo
Live or lives, politely.
먹어요.
meogeoyo
Eat or eats, politely.
읽어요.
ilgeoyo
Read or reads, politely.
Build a regular form
Conjugate 먹다 into the everyday polite style.
- Remove dictionary 다 to get 먹.
- Find the last vowel ㅓ.
- Add 어요 and read the linked form.
먹어요.
Let adjacent vowels contract where the pattern allows
When a stem already ends in a vowel, adding another vowel can produce a contraction, a shorter form in which the vowels merge. 가 plus 아요 gives 가요; the same ㅏ vowel is not normally repeated in separate syllables. 오 plus 아요 always becomes 와요, and 보 plus 아요 commonly becomes 봐요. These spellings use compound vowel shapes you met in the Hangul lesson. A contraction changes the written combination without creating a new verb meaning.
Other common combinations include 배우다 becoming 배워요 and 마시다 becoming 마셔요. The last vowel and the following ending combine, so a spelling built by mechanically appending 어요 can sound less natural or miss the common contracted form. Not every possible contraction behaves identically, and some fuller variants exist. The exercises request the ordinary forms taught here. Read each complete form with a recording rather than treating the Roman transcription as a precise guide to every sound change.
와요.
wayo
Come or comes, politely.
봐요.
bwayo
See or sees, politely.
배워요.
baewoyo
Learn or learns, politely.
마셔요.
masyeoyo
Drink or drinks, politely.
Learn 해요 as the common form of 하다
하다 is extremely common, both on its own and in longer verbs. Its everyday polite form is 해요. Thus 공부하다, “to study,” becomes 공부해요, and 연습하다, “to practice,” becomes 연습해요. Learn this frequent pattern directly instead of trying to force 하 into the ordinary 아요 rule. The longer form 하여요 is related historically and structurally, but 해요 is the useful everyday target in these examples.
Many noun plus 하다 combinations let you recognize the activity inside the verb: 공부 concerns study and 연습 concerns practice. However, removing 하다 does not guarantee that every resulting string is a free standing noun with exactly the meaning you expect. Check the dictionary entry when meeting a new word. For production, choose one familiar activity and say when or what you practice. This makes the ending serve a message rather than remaining an isolated conjugation drill.
공부해요.
gongbuhaeyo
Study or studies, politely.
연습해요.
yeonseupaeyo
Practice or practices, politely.
Turn an activity into a sentence
Say that you practice every day.
- Use 연습하다, “to practice.”
- Choose the common polite form 연습해요.
- Add 매일 before the final predicate, the verb or description that ends the sentence.
Compare your reasoning
매일 연습해요.
Expect some stems to change before the ending
Some verbs change their stem before a vowel ending. 듣다, “to hear” or “to listen,” becomes 들어요. 걷다, meaning “to walk,” becomes 걸어요. In these verbs, final ㄷ changes to ㄹ before the vowel ending. But 받다, “to receive,” keeps ㄷ and becomes 받아요. A final letter alone cannot tell you whether a verb belongs to the irregular pattern. Record the meaning and the actual inflected form together.
Other changes affect different final letters and vowels. For example, a descriptive predicate such as 쉽다, “to be easy,” becomes 쉬워요. You do not need to master every irregular family to begin speaking, but you should know when the regular rule has reached its limit. If your predicted form differs from a reliable dictionary model, compare the stem and ending rather than assuming the reference is a random exception. Later practice can group words that genuinely share the same change.
들어요.
deureoyo
Hear or listen, politely.
걸어요.
georeoyo
Walk or walks, politely.
받아요.
badayo
Receive or receives, politely.
쉬워요.
swiwoyo
Is easy, politely.
Build the message around the final predicate
A basic Korean sentence places its predicate at the end. 저는 한국어를 공부해요 means “I study Korean.” The topic 저는 establishes the speaker, 한국어를 marks what is studied, and 공부해요 finishes the statement. If the person is clear, the topic can be omitted. The object can also be omitted when it is understood, but an explicit full example is useful while learning which part contributes which meaning.
Descriptive predicates use polite forms too. 좋아요 can mean “is good,” without adding a separate noun identification ending. This differs from 학생이에요, “is a student,” which identifies someone with a noun. A descriptive form before a noun is another construction again, such as 좋은 책, “a good book.” For now, keep the full sentence ending distinct from the form that modifies a following noun. Mixing those jobs often produces an unnecessary extra ending.
저는 한국어를 공부해요.
jeoneun hangugeoreul gongbuhaeyo
I study Korean.
이 책을 읽어요.
i chaegeul ilgeoyo
Read this book, with the actor understood.
좋아요.
joayo
It is good.
Ask and negate without rebuilding the word order
The same everyday polite ending can appear in a question: 커피를 마셔요? asks whether the listener drinks coffee in the relevant context. Question intonation and the situation distinguish it from a statement. A question word can supply a more specific request, as in 뭐 마셔요?, “What are you drinking?” You do not add an English style do or does before the Korean sentence.
For a simple negative, 안 often appears before the predicate: 안 가요 means “do not go” or “am not going” in a statement about the understood subject. This is not automatically an instruction forbidding someone to go. Another useful pattern attaches 지 to the stem and follows it with 않아요: 가지 않아요. With an activity verb like 공부하다, 공부 안 해요 is common, and 공부하지 않아요 is another clear option. Noun identities use 아니에요 instead, so keep that negative pattern separate.
커피를 마셔요?
keopireul masyeoyo
Do you drink coffee?
안 가요.
an gayo
Do not go or am not going, as a statement in context.
공부하지 않아요.
gongbuhaji anayo
Do not study or am not studying.
Move from a conjugation to a useful exchange
Use a short decision path for a new familiar verb. Find its dictionary form and remove 다. Check whether you already know an irregular polite form. If it is regular, inspect the last stem vowel, add the appropriate ending, and apply the common contraction. Then put that form at the end of a sentence with a meaningful person, object, or time phrase. A correct ending is most useful when it helps someone understand what you do.
After reading the examples, cover the polite forms and retrieve them from the dictionary forms. Explain the reason for one regular answer and one irregular answer. Next say a positive sentence, turn it into a question, and give a negative reply. The games below check written decisions; they do not measure pronunciation or certify conversational fluency. Keep a small set of accurate phrases in circulation and return later, increasing variety only when you can reconstruct them without copying.
오늘 공부해요.
oneul gongbuhaeyo
I study today, or am studying today, in context.
매일 연습해요.
maeil yeonseupaeyo
I practice every day.
References for this explanation
Notice the difference
Common mistakes
Remove the dictionary ending
Instead of먹다요.
For this meaning먹어요.
Find the stem 먹 first, then add the ordinary polite ending rather than appending 요 to the whole dictionary form.
Change 하다 to 해요, not 하요
Instead of공부하요.
For this meaning공부해요.
The common everyday polite form of 하다 is 해요.
Keep a regular ㄷ stem regular
Instead of발아요.
For this meaning받아요.
받다, “to receive,” keeps its final ㄷ. The change in 듣다 and 걷다 is not a rule for every stem ending in ㄷ.
From understanding to using
Make your own example.
Try these without answer choices. Say your answer aloud or write it below, then compare your reasoning with the model.
Your turn 1
Say that you study Korean, using the humble word for “I” as the topic and a polite ending.
Compare with a model
저는 한국어를 공부해요.
I study Korean.
The object 한국어 takes 를 after its vowel ending. The activity verb finishes the sentence with 해요.
Your turn 2
Say that you do not go, explicitly using the 지 않아요 pattern.
Compare with a model
가지 않아요.
I do not go, or am not going, in context.
Remove 다 from 가다, attach 지, and write 않아요 separately. The person can remain understood in the stated context.
Put it into practice
Make the next choice.
Choose a response and learn why it works. Your score reflects your first answer to each question. You can revisit anything you miss.
Choose an answer, then open the explanation to check your reasoning.
Question 1
Which part of 먹다 does the polite ending attach to?
- 먹
- 먹다
Check the answer
Answer: 먹
먹: Remove the dictionary ending 다.
먹다: This still includes the dictionary ending.
Question 2
Choose the everyday polite form of 먹다.
- 먹아요
- 먹어요
Check the answer
Answer: 먹어요
먹아요: The ending 아요 does not follow the stem vowel ㅓ.
먹어요: The stem’s last vowel is ㅓ, so the regular ending is 어요.
Question 3
Choose the everyday polite form of 살다.
- 살아요
- 살어요
Check the answer
Answer: 살아요
살아요: The stem contains ㅏ and retains its final consonant before 아요.
살어요: A stem with ㅏ takes 아요, not 어요.
Question 4
Choose the ordinary polite form of 가다.
- 가다요
- 가요
Check the answer
Answer: 가요
가다요: Do not add 요 directly to the dictionary form.
가요: The repeated ㅏ combines into the familiar form 가요.
Question 5
Choose the common contracted form of 오다.
- 와요
- 오어요
Check the answer
Answer: 와요
와요: The vowels ㅗ and ㅏ combine into ㅘ before 요.
오어요: A stem ending in ㅗ takes 아요, not 어요.
Question 6
Choose the common contracted form of 보다.
- 보어요
- 봐요
Check the answer
Answer: 봐요
보어요: The vowel ㅗ takes 아요, not 어요.
봐요: 보 plus 아요 commonly contracts to 봐요.
Question 7
Choose the everyday polite form of 공부하다.
- 공부해요
- 공부하요
Check the answer
Answer: 공부해요
공부해요: 하다 commonly becomes 해요 in this style.
공부하요: The common polite form requires 해 rather than simply adding 요 to 하.
Question 8
Choose the common contracted form of 배우다.
- 배우아요
- 배워요
Check the answer
Answer: 배워요
배우아요: The last stem vowel, ㅜ, takes 어요, not 아요.
배워요: The final ㅜ combines with ㅓ into ㅝ.
Question 9
Choose the everyday polite form of 듣다, “to listen.”
- 들어요
- 듣어요
Check the answer
Answer: 들어요
들어요: This verb changes final ㄷ to ㄹ before the vowel ending.
듣어요: 듣다, “to listen,” follows the irregular pattern, so its ㄷ becomes ㄹ.
Question 10
Choose the everyday polite form of 받다, “to receive.”
- 발아요
- 받아요
Check the answer
Answer: 받아요
발아요: Not every stem ending in ㄷ follows the irregular change.
받아요: This verb keeps its ㄷ before 아요.
Question 11
Choose the common polite form of 마시다.
- 마셔요
- 마시아요
Check the answer
Answer: 마셔요
마셔요: 시 and 어 combine into 셔 in the common form.
마시아요: The stem’s last vowel is ㅣ, not ㅏ or ㅗ.
Question 12
Say “I study Korean.”
- 저는 공부해요를 한국어.
- 저는 한국어를 공부해요.
Check the answer
Answer: 저는 한국어를 공부해요.
저는 공부해요를 한국어.: This incorrectly attaches the object particle 를 to the predicate and leaves the noun at the end. A particle is a short word attached to the end of a noun to show its role in the sentence.
저는 한국어를 공부해요.: The activity follows its topic and object.
Question 13
Use the 지 않아요 pattern for not going.
- 가지 않아요.
- 가요지 않아요.
Check the answer
Answer: 가지 않아요.
가지 않아요.: Attach 지 to the stem 가, then add 않아요.
가요지 않아요.: Do not insert the complete polite form before 지.
Question 14
Choose a complete polite description meaning “It is good.”
- 좋아요예요.
- 좋아요.
Check the answer
Answer: 좋아요.
좋아요예요.: A noun identification ending should not follow this complete predicate.
좋아요.: The descriptive predicate already carries its ending.
Keep the conversation going
What to practice next
Explain one contrast without looking at the page. Write two examples of your own, compare them with the pattern, and return later to retrieve the forms again. Continue to the next Korean topic when you can explain your answer.
Keep it going in the app
Make this pattern stick.
In the Loquus app, Grammar Center keeps topics like this one tap away with focused drills, and spaced review brings the words back before you forget them.
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By Loquus ·
Sources
- How to Study Korean: Lesson 1: Basic Korean Sentences
- How to Study Korean: Lesson 2: Korean Particles 이/가
- How to Study Korean: Lesson 3: Korean Verbs/Adjectives
- How to Study Korean: Lesson 4: Korean Adjectives ~ㄴ/은
- How to Study Korean: Lesson 5: Korean Conjugation: Past, Present, Future
- How to Study Korean: Lesson 6: Korean Honorifics
- How to Study Korean: Lesson 7: Korean Irregulars
- How to Study Korean: Lesson 8: Korean Adverbs, Negative Sentences in Korean
- How to Study Korean: Lesson 9: Conjugate 이다 (할 것이다)
- How to Study Korean: Lesson 22: Asking Questions in Korean: How, What, Which, How Many
- How to Study Korean: Korean Pronunciation
- How to Study Korean: Korean Dipthongs: Complex Vowels
- National Institute of Korean Language: Romanization of Korean
Learning research behind the practice
Worked examples, retrieval practice, and later review inform the activities. These studies do not establish the effectiveness of this specific lesson.