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Korean uses small particles attached directly to nouns to show their role in a sentence. The subject markers 이 (after a consonant) and 가 (after a vowel) mark who or what is doing the action, while the object markers 을 (after a consonant) and 를 (after a vowel) mark who or what receives the action. For example, 저가 커피를 마셔요 means ‘I drink coffee,’ where 저가 flags the doer and 커피를 flags what is being drunk. Because Korean word order is flexible, these particles are what keep meaning clear even when words are rearranged.

A reliable trick is to pair each particle with a sample word and say it aloud repeatedly as a chunk — 친구가, 책을 — until the sound feels automatic. Notice that in fast, casual speech Koreans often drop these particles entirely, so training your ear to insert them mentally when listening is just as important as producing them. Once you internalise these markers, you will be able to build simple sentences about almost any topic, understand who is doing what in a conversation, and stop relying on guesswork about word order.

• What are Subject, Object Marker?! Big Difference between English and Korean 😊 – Hailey _Your Korean Friend: Focuses specifically on subject and object markers (이/가, 을/를) for beginners, highlighting the key contrast with English sentence structure in an accessible, friendly format.
• Topic Marker, Subject Marker, Object Marker (은/는, 이/가, 을/를) | Korean FAQ – Learn Korean with GO! Billy Korean: A well-structured, clearly explained comparison of all three core Korean markers by a trusted channel, with high view count confirming its quality for A1 learners.
• Basic Korean grammar & All About Korean Particles! (은/는, 이/가, 을/를) – Korean Ryan: A native Korean speaker explains the particles clearly and concisely in under 8 minutes, directly addressing the common confusion beginners face with 이/가 versus 을/를.

The topic markers 은 (after a consonant) and 는 (after a vowel) are among the most frequent particles in Korean, yet they do something different from the subject marker. They signal ‘as for this thing, here is what I want to say about it,’ and they also carry a subtle contrast — 저는 학생이에요 can mean both ‘I am a student’ and ‘I (as opposed to someone else) am a student.’ This dual role of framing and contrasting is why 은/는 appears constantly in everyday sentences and why mixing it up with 이/가 is one of the most common learner errors.

The fastest way to feel the difference is to compare pairs: 누가 왔어요? 민준이가 왔어요 (Who came? Minjun came — new info, so 이/가) versus 민준은 왔어요 (As for Minjun, he came — topic already known). Practice swapping the markers in the same sentence and notice how the nuance shifts. Mastering 은/는 lets you frame topics naturally, signal contrast without extra words, and sound far more fluent in casual and semi-formal conversation alike.

• One-Stop Guide to Korean Particles – 은/는/이/가 (Subject & Topic Markers) – Talk To Me In Korean: The most-watched and comprehensive guide on this exact topic, clearly explaining the topic marker’s ‘as for’ function and contrast nuance with structured examples ideal for A1–B1 learners.
• Topic Marker, Subject Marker, Object Marker (은/는, 이/가, 을/를) | Korean FAQ – Learn Korean with GO! Billy Korean: Provides a clear, beginner-friendly comparison of 은/는 against other common particles, helping learners understand what makes the topic marker distinct through practical contrasting examples.
• How to use “은/는” and “이/가” in Korean to sound NATURAL?🇰🇷 Differences between 은,는,이,가 | Learn Korean – Real Korean with Morning: Focuses on natural usage and the subtle contrast meaning of 은/는, making it especially useful for learners who want to move beyond textbook rules and understand how native speakers use the topic marker.

Korean verbs always come at the end of the sentence and are conjugated by attaching endings to the verb stem. The polite informal ending 아요 or 어요 is the single most useful form to learn first — it works for present tense statements and questions alike, and it is the register used in most everyday interactions such as shopping, ordering food, and chatting with acquaintances. The choice between 아요 and 어요 depends on the last vowel of the stem: if it contains ㅏ or ㅗ, use 아요 (가다 → 가요); otherwise use 어요 (먹다 → 먹어요). The irregular 하다 verbs simply become 해요.

Chunk entire verb forms rather than building them from scratch each time — memorise 먹어요, 마셔요, 가요 as ready-to-use units before worrying about the rule. On the app, notice how the same ending turns a statement into a question purely through rising intonation: 먹어요 can mean ‘I eat’ or ‘Do you eat?’ depending on how it is said. Once this ending is automatic, you will be able to ask and answer basic questions, describe daily routines, and handle a huge range of real-world exchanges in appropriate, natural-sounding Korean.

• Billy Go’s Beginner Korean Course | #20: Intro to Conjugation – Learn Korean with GO! Billy Korean: A highly popular, structured lesson from a trusted beginner Korean series that thoroughly covers the 요 form conjugation rules with clear examples, making it ideal for A1 learners.
• [Basic Korean Grammar] -아요 / -어요 (Ending words) – Teacher Kim’s Korean Class: Directly and clearly explains how to find the verb stem and conjugate with 아요/어요, making it a focused and practical resource for A1 learners on this exact topic.
• G 2.5 The Polite Ending ~어요/아요 – Prof. Yoon’s Korean Language Class: A well-paced academic-style lesson dedicated entirely to the polite 어요/아요 ending, offering solid structured coverage at an appropriate length for beginner learners.

To say that something ‘is’ something else in Korean, you attach the copula 이에요 (after a consonant) or 예요 (after a vowel) directly to the noun — there is no separate verb ‘to be’ standing apart. So ‘저는 선생님이에요’ means ‘I am a teacher’ and ‘이게 커피예요’ means ‘This is coffee.’ The negative form is 이/가 아니에요, meaning ‘is not.’ This construction covers a huge slice of everyday speech: introductions, identifying objects, stating facts, and asking what things are.

A quick memory anchor: think of 이에요/예요 as a sticky suffix that glues meaning onto a noun, and practise it immediately with vocabulary you are already learning on the app — attach it to every new noun you see. Because it doubles as both a statement and a question (same rising-intonation rule as 아/어요 verbs), you will instantly be able to ask ‘이게 뭐예요?’ (What is this?) and understand the answer, handle introductions, read labels, and describe people and things around you from day one.

• 이다 & 아니다 (Must-Know Korean words) – Just Learn Korean: Directly covers both 이다 and 아니다 with clear rules and example sentences, matching the topic including the negative form 이/가 아니에요, at a beginner-friendly pace within an ideal duration.
• Noun + 이다 Irregular Verbs (Basic 1) Korean Grammar Explained – HANOK Korean Class: Focuses specifically on the noun + 이다 copula structure for beginners with a structured grammar explanation and practice portion in an appropriate duration.
• Maruchingu Korean Studies 1 Lesson 2 “N은/는N이에요/예요?”, Study Book – Maruchingu Korean Class: Directly targets the 이에요/예요 copula forms in the context of ‘N은/는 N이에요/예요’ sentences, covering question formation and subject omission relevant to A1 learners.

Korean past tense is formed by inserting 았 or 었 between the verb stem and the polite ending: the same vowel-harmony rule applies as for present tense, so 먹다 → 먹었어요 and 가다 → 갔어요. Future or planned actions use the pattern -(으)ㄹ 거예요 attached to the verb stem — 먹을 거예요 means ‘I will eat’ or ‘I am going to eat.’ These two tense patterns, combined with the present tense you already know, give you complete time coverage in conversation.

Because the past-tense insert 았/었 sits in the middle of the word, learners sometimes lose track of it in fast speech — train your ear by shadowing recorded dialogues and pausing to confirm which tense was used. A useful chunking habit is to drill the same verb in all three tenses back to back: 먹어요 / 먹었어요 / 먹을 거예요. Internalising these patterns means you can narrate events from your day, make plans with friends, and understand whether someone is talking about something that happened, is happening, or will happen — the backbone of any real conversation.

• Billy Go’s Beginner Korean Course | #42: The Past Tense – Learn Korean with GO! Billy Korean: A highly trusted beginner-focused channel with clear structured explanation of past tense conjugation, strong view count, and ideal duration for A2 learners.
• Korean Grammar (7): Verbs past tense conjugation with 았/었/였 and weekday names 월 화 수 목 금 토 일 – Teacher Jinee’s Korean Class: Directly covers the 았/었 vowel-harmony rule with intentionally selected practice verbs, making it a practical and well-paced resource for A2 learners.
• Basic Tenses of Korean Verb : 배우다(learn) – Everyday Korean with Yoo shin: Concisely covers both past (배웠어요) and future (배울 거예요) tense patterns together through a single verb, giving learners a clear side-by-side comparison of both A2 grammar targets.

Korean rarely uses conjunctions that sit between two sentences the way English ‘and,’ ‘so,’ and ‘but’ do. Instead, connective endings are attached to the first verb to link clauses together. 고 connects two actions or states neutrally (‘and then’ / ‘and also’): 밥을 먹고 나왔어요 — ‘I ate and came out.’ 아/어서 expresses cause or sequence (‘so’ / ‘and then’): 피곤해서 잤어요 — ‘I was tired so I slept.’ 지만 marks contrast (‘but’): 비싸지만 맛있어요 — ‘It’s expensive but delicious.’ These three endings cover the vast majority of multi-clause sentences in everyday speech.

The biggest pitfall with 아/어서 is that tense is not marked on the first verb — it is only shown on the final verb of the sentence. So resist adding 었 to the first clause and focus your practice on hearing and producing natural sequences. On the app, look for these endings in every multi-part phrase and try to predict what comes next. Once you can use these connectors fluidly, your sentences stop sounding like disconnected telegrams and you can explain reasons, describe sequences of events, and express contrast — all essential skills for holding a real conversation.

Korean grammar encodes social relationships directly into verb endings. The polite informal level (해요체, ending in 아/어요) is appropriate for most adult strangers and service interactions. The plain or casual level (해체, ending in 아/어 with no 요) is used with close friends and younger people. The formal honorific request or command -(으)세요 shows respect to the listener and is heard constantly in shops and announcements: 앉으세요 (‘please sit’), 주문하세요 (‘please order’). Additionally, the subject honorific suffix -(으)시- is inserted into verbs to show respect for the person being talked about: 선생님이 오세요.

A practical strategy is to stick almost entirely to the 해요체 level at first — it is almost never wrong and marks you as polite without the complexity of formal 합쇼체. Tune your ear to 요 versus no-요 as the key signal of register shift in native speech, and notice -(으)세요 on all the instruction phrases in the app. Understanding speech levels means you will know how to address a shop assistant versus a close friend, avoid accidentally sounding rude or stiff, and correctly interpret whether someone is talking about themselves or politely referring to another person.

Korean frequently converts entire verb phrases into noun-like chunks using the nominaliser 것 (thing/fact), attached after a verb modifier ending. The present-action modifier 는 turns a verb into ‘the act of doing’: 먹는 것 means ‘eating’ or ‘the thing of eating.’ The past modifier -(으)ㄴ gives ‘the thing that was done’: 먹은 것. The future modifier -(으)ㄹ gives ‘the thing that will be done’: 먹을 것. These structures slot into sentences wherever a noun would go, so you can say 운동하는 것이 좋아요 (‘exercising is good’) or 제가 말한 것 (‘what I said’). The contracted spoken form 거 is used instead of 것 in casual speech.

The key insight is that 것/거 acts as a grammatical placeholder — once you recognise it, long complex sentences suddenly become parseable because you can identify where the embedded clause ends. Practise by taking simple sentences you know and nominalising the verb: 가다 → 가는 것, then drop it into 가는 것이 좋아요. This pattern unlocks the ability to talk about abstract ideas, explain preferences and reasons, understand complex instructions and recommendations, and follow the kind of nuanced conversation that trips up learners who only know basic sentence structures.

• Learn Korean Ep. 10: Nominalization | ~기, ~는 것, ~음/ㅁ – Learn Korean with GO! Billy Korean: A highly-watched, structured lesson from a trusted channel that clearly explains all three major nominalization forms including ~는 것, making it ideal for B1 learners.
• Korean Nominalization (~는 것 & ~기) | Live Class Abridged – Learn Korean with GO! Billy Korean: A more in-depth follow-up from the same reliable channel that digs deeper into ~는 것 and ~기 with interactive class-style examples, reinforcing the topic well for B1 learners.
• How to make Korean verbs into nouns + how to use ~기 in sentences – Korean Jream: Covers ~는 것/거 alongside ~기 and ~(으)ㅁ with practical sentence usage patterns, offering learners a concise and well-organized comparison of nominalization forms.

The conditional ending -(으)면 attaches to a verb stem to mean ‘if’ or ‘when’: 시간이 있으면 갈게요 — ‘If I have time, I’ll go.’ It is extraordinarily frequent in conversation and covers both real conditions and hypotheticals. The pattern -(으)ㄹ 것 같다 expresses a speaker’s inference or soft assumption — roughly ‘it seems like’ or ‘I think it will’: 비가 올 것 같아요 means ‘It looks like it will rain.’ Together these two patterns let you speak tentatively, make polite suggestions, hedge statements, and reason out loud, all of which are hallmarks of natural, fluent speech.

For -(으)면, notice that the 으 only appears when the stem ends in a consonant (먹으면) but is dropped after a vowel (가면) — the same consonant-vowel sensitivity you have seen throughout Korean. For 것 같다, practise combining it with the three modifier tenses you learned in the nominalisation topic to express ‘seems to be doing,’ ‘seems to have done,’ and ‘seems like it will.’ Mastering these patterns means you can give conditional advice, make polite requests without sounding demanding, speculate about situations, and produce the kind of measured, thoughtful sentences that make conversation feel genuinely fluent rather than robotic.