By Sohn Byung-yong
Professor of Department of English Education
1. Why Prepositions Are the Secret Sauce
Think of prepositions as the secret ingredient in English, like the gochujang in your bibimbap. Use them wrong, and suddenly your sentence tastes weird. For Korean university students, 'in,' 'on,' and 'at' are akin to mystery-flavored jellybeans: you never quite know what you’re going to get. Why all the ambiguity? Because English prepositions don’t play by the same rules as our trusty “에” or “에서”. Sometimes, figuring them out feels as random as trying to get the Wi-Fi to work in a campus basement. But don’t worry! Cracking the code on these nifty little words is your shortcut to sounding like you actually paid attention in class.
2. Meet the Preposition Squad: “In,” “On,” and “At”
Let’s break this down like a K-pop dance tutorial:
“In”: This is your “inside the box” preposition. If you’re in the library, you’re probably surrounded by books (and maybe pretending to study while watching cat videos). If you’re in June, you’re somewhere between midterms and your next existential crisis.
Example: My friend is in the library (probably napping behind a stack of textbooks).
Example: Let’s meet in June (once we recover from finals)
“On”: Think of “on” as the “touching the surface” guy. Your laptop is on your desk (hidden under ramen wrappers), and your big plans to start studying are always on Monday (but somehow, Monday never arrives).
Example: The remote is on the table (under a mountain of snack wrappers).
Example: The meeting is on Wednesday (but you’ll just read the group chat summary).
“At”: This one’s all about pinpoint accuracy. You’re at the bus stop (wondering if the bus is a myth) or at 7 PM (when your group meeting actually kicks off at 7:20).
Example: Wait at the bus stop (and question all your life choices).
Example: Dinner is at 6 PM (but you show up at 6:10 for dramatic effect).
Pro tip: Unlike our flexible Korean particles, English prepositions are picky, like that friend who only eats food with exactly three ingredients. “집에” could become “in the house” or “at the house” in English, depending on the situation. Welcome to the preposition obstacle course.
3. Time Travel with Prepositions
Prepositions are like time machines, but with strict boarding rules:
“In”: Use for longer stretches, such as in 2025 (when you hope to finally graduate), in August (when you remember you had summer homework), or in the morning (if you ever see it).
“On”: Use for specific days, such as on Monday (the day you regret your weekend choices), on December 25th (when you expect presents), or on your birthday (when you expect even more presents).
“At”: Use for exact moments, such as at 10 o’clock (when your alarm betrays you), at midnight (when you start your assignment), or at the moment (when you realize you should’ve started earlier).
Common pitfall: Saying “on noon” instead of “at noon” is a big no-no, but don’t worry; Even native speakers get this wrong after an all-nighter.
4. Getting Spatial: Where Stuff Actually Is
Let’s get spatial, not special:
“In”: For enclosed spaces, like in Korea (where you are), in a classroom (hiding from your group project), or in a car (stuck in traffic).
“On”: For surfaces, like on the table (where your notes are supposed to be), on the wall (with your motivational sticky notes), on the street (dodging delivery scooters), or on the bus (scrolling through memes).
“At”: For points, like at the station (waiting for a train that’s always late), at the entrance (waiting for your friend who’s “almost there”), at 123 Main Street (if you can find it), or at home (where you wish you were during 9 AM classes).
Survival tip: English prepositions are not as forgiving as your professor when you forget your homework. Choose wisely.
5. Prepositions in the Wild: Abstract and Figurative Uses
Prepositions don’t just talk about where or when they sneak into your feelings and situations too:
“In”: in trouble (when you forget to submit homework), in love (with your bed), in education (the never-ending journey), and in a hurry (every morning).
“On”: on TV (where you wish your life was), on the phone (ordering food), on duty (when you’re the unlucky group leader), and on the topic of politics (when you want to sound smart).
“At”: at risk (of failing), at a disadvantage (when you sit in the back row), at a high level (your caffeine intake), and at a loss (during pop quizzes).
Warning: “On the job market” means you’re actively hunting for work, while “in the job market” just means you’re hanging around. Kind of like the difference between “studying” and “opening your textbook.”
6. Expressions That Love to Confuse
• In the morning (when you promise to submit your assignment) vs. on the morning of June 5th (when you actually have to).
• In time (barely making it) vs. on time (almost never happens).
• In the street (playing soccer, possibly illegal) vs. on the street (buying tteokbokki)
7. Prepositional Plot Twists and Idioms
English prepositions love to break their own rules, just like students during festival
season:
•At night (not “in night,” unless you’re Batman)
•On the weekend (US English) vs. at the weekend (UK English). Confused? Just say “토요일에” and move on
•In the hospital (as a patient), at the hospital (as a visitor), but either way, get well soon
•At university (enrolled and suffering), in university (living the campus life), on campus (physically present, mentally elsewhere)
•On the bus / train / plane (but not “in” unless you’re the driver or pilot)
Pro tip: Memorize these like your phone password.
8. Leveling Up: How to Actually Get Better
• Learn prepositions as part of phrases, not just as single words. Think of them like K-pop choreography: context matters!
• Listen to how native speakers use prepositions in dramas, movies, or even on Instagram (yes, social media counts).
• Practice, and don’t stress about mistakes. Everyone’s “in trouble” with prepositions at some point.
9. Final Words of Wisdom
Mastering “in,” “on,” and “at” can feel harder than getting a seat in a popular elective. But once you get the hang of them, your English will sound way more natural. You might even impress your professor (or your crush). Remember, language learning is a marathon, not a sprint. Embrace the confusion, laugh at your mistakes, and let prepositions be your compass through the wild jungle of English!
