The main Korean irregular verb groups (ㅂ, ㄷ, ㅡ, 르, ㅅ, ㅎ and ㄹ) in the polite 요 form.
덥다 → 더워요
To be hot → it's hot (ㅂ irregular: ㅂ becomes 우)
춥다 → 추워요
To be cold → it's cold (ㅂ irregular)
맵다 → 매워요
To be spicy → it's spicy (ㅂ irregular)
쉽다 → 쉬워요
To be easy → it's easy (ㅂ irregular)
어렵다 → 어려워요
To be difficult → it's difficult (ㅂ irregular)
가깝다 → 가까워요
To be close → it's close (ㅂ irregular)
무겁다 → 무거워요
To be heavy → it's heavy (ㅂ irregular)
돕다 → 도와요
To help → help (ㅂ irregular, an exception with 와)
입다 → 입어요
To wear → wear (regular: not every ㅂ verb changes)
듣다 → 들어요
To listen → listen (ㄷ irregular: ㄷ becomes ㄹ)
걷다 → 걸어요
To walk → walk (ㄷ irregular)
묻다 → 물어요
To ask → ask (ㄷ irregular)
닫다 → 닫아요
To close → close (regular)
크다 → 커요
To be big → it's big (ㅡ drops)
쓰다 → 써요
To write → write (ㅡ drops)
바쁘다 → 바빠요
To be busy → I'm busy (ㅡ drops)
아프다 → 아파요
To hurt → it hurts (ㅡ drops)
예쁘다 → 예뻐요
To be pretty → it's pretty (ㅡ drops)
배고프다 → 배고파요
To be hungry → I'm hungry (ㅡ drops)
기쁘다 → 기뻐요
To be glad → I'm glad (ㅡ drops)
모르다 → 몰라요
To not know → I don't know (르 irregular: adds ㄹ)
부르다 → 불러요
To sing, to call → sing, call (르 irregular)
빠르다 → 빨라요
To be fast → it's fast (르 irregular)
다르다 → 달라요
To be different → it's different (르 irregular)
고르다 → 골라요
To choose → choose (르 irregular)
낫다 → 나아요
To get better → get better (ㅅ irregular: ㅅ drops)
짓다 → 지어요
To build → build (ㅅ irregular)
웃다 → 웃어요
To laugh → laugh (regular)
그렇다 → 그래요
To be so → that's right (ㅎ irregular)
어떻다 → 어때요
To be how → how is it? (ㅎ irregular)
빨갛다 → 빨개요
To be red → it's red (ㅎ irregular)
하얗다 → 하얘요
To be white → it's white (ㅎ irregular)
살다 → 사세요
To live → (you) live, honorific (ㄹ drops before ㅅ)
만들다 → 만드세요
To make → (you) make, honorific (ㄹ drops before ㅅ)
알다 → 아세요?
To know → do you know? (ㄹ drops before ㅅ)
오늘 정말 더워요
It's really hot today
음악을 들어요
I listen to music
요즘 바빠요
I'm busy these days
잘 몰라요
I don't really know
노래를 불러요
I sing a song