[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"pubgrp:kg-e:ko:en":3},{"type":4,"slug":5,"title":6,"level":7,"goal":8,"image_path":9,"is_locked":10,"is_daily_free":10,"formula":11,"gloss":8,"desc":14,"desc_audio":9,"voices":15,"examples":16,"fills":53,"choices":54},"grammar","kg-e","At\u002FIn (~time, place)","elementary","The particle 에 for time and location: marking targets and endpoints",null,false,[12,13],"Noun + 에 (time)","Noun + 에 (place\u002Fdestination\u002Fstatic location)","**The core concept:** In English, you use prepositions like \"at,\" \"on,\" \"in\" for both time and place almost interchangeably, and the distinction feels semantic rather than grammatical. Korean forces you to think differently: `에` marks a **destination or a point in time**—it's about *where\u002Fwhen something is located or happens*. This is fundamentally different from English thinking.\n\nWhen English speakers say \"I am **at** 3 o'clock\" or \"I am **in** Seoul,\" these feel like awkward phrasings because English doesn't mark them grammatically the same way. Korean does: `나는 3시에 있어요` (I am [at] 3 o'clock) and `나는 서울에 있어요` (I am [at] Seoul) use the same particle `에` because **both express a location or point in time where the subject exists or an action occurs**. This is the WHY: `에` isn't just a preposition—it's a **grammatical marker that treats time and place as equivalent concepts** in Korean thought.\n\n**The key difference from English:** English relies on context and variety of prepositions (at, in, on, during, etc.). Korean reduces this to a system: `에` for destinations and time-points, `에서` for the **active location where an action takes place**. For example, \"I study at the library\" uses a location (library), so it's `도서관에서 공부해요` (the action happens *at* the library). But \"I go to the library\" is `도서관에 가요` (direction\u002Fdestination toward the library). English doesn't force this distinction grammatically—Korean does. This trains your brain to **always consider whether you're talking about a location\u002Ftime where something exists, or where an action happens**.\n\nUnderstanding `에` means understanding that Korean **collapses time and space into one grammatical system**—both are \"locations\" in Korean thinking, and `에` marks them neutrally. This is radically different from English, where temporal and spatial prepositions feel separate.",[],[17,23,29,35,41,47],{"en":18,"ko":19,"ko_audio":20,"audio":21,"audios":22},"저는 3시에 학교에 가요.","I go to school at 3 o'clock.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002F78a60b6d-0d32-4817-9427-a3b40649a008.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002Fde9fff34-4f63-4fd4-8800-c1dc7a2b943c.mp3",{},{"en":24,"ko":25,"ko_audio":26,"audio":27,"audios":28},"내일에 친구를 만나요.","I meet my friend tomorrow.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002Fe141021d-ed7c-4306-b39e-7d79ee2ed70b.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002Ff8dad11f-e94a-4fec-aa07-affab0b9eba1.mp3",{},{"en":30,"ko":31,"ko_audio":32,"audio":33,"audios":34},"도서관에 책이 있어요.","There are books in the library.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002Fcf7eb883-f846-4cb8-8f94-2626fddca6d3.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002F91c160e9-e8f5-4186-849e-e4f070cb81d7.mp3",{},{"en":36,"ko":37,"ko_audio":38,"audio":39,"audios":40},"월요일에 회의가 있어요.","There is a meeting on Monday.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002F3504ec1a-1099-448d-924b-395a6a96137d.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002F8095849d-b22a-4144-b5b8-270f7df17d4d.mp3",{},{"en":42,"ko":43,"ko_audio":44,"audio":45,"audios":46},"부산에 여행을 가요.","I go on a trip to Busan.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002Fc39b4736-1ba8-42ae-9177-63a574f9d989.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002F76b7ba17-b3f4-409f-93dd-a00c934a97b2.mp3",{},{"en":48,"ko":49,"ko_audio":50,"audio":51,"audios":52},"집에서 공부해요.","I study at home.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002F47bdf3b9-bd1c-41c4-a119-ed99b5fcbc99.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002F45067541-8175-4fa3-8d7b-4e7a9a68ad57.mp3",{},[],[55,67,78],{"ko":56,"options":57},"Which sentence correctly uses 에 to mark a time?",[58,61,63,65],{"t":59,"ok":60},"아침에 일어나요.",true,{"t":62,"ok":10},"책을 아침에 읽어요.",{"t":64,"ok":10},"아침 일어나요.",{"t":66,"ok":10},"일어나요 아침에.",{"ko":68,"options":69},"What is the main function of the particle 에?",[70,72,74,76],{"t":71,"ok":10},"To show possession",{"t":73,"ok":60},"To mark a target endpoint (time, place, or destination)",{"t":75,"ok":10},"To indicate the subject of a sentence",{"t":77,"ok":10},"To show an object being acted upon",{"ko":79,"options":80},"Which sentence correctly uses 에 for a static location?",[81,83,85,87],{"t":82,"ok":10},"서울로 갑니다.",{"t":84,"ok":60},"서울에 있습니다.",{"t":86,"ok":10},"서울을 갑니다.",{"t":88,"ok":10},"서울과 갑니다."]