http://www.omniglot.com/language/phrases/korean.php
English
한국어 (Korean)
Welcome
환영합니다 (hwangyong-hamnida)
Hello
안녕하세요 (annyeonghaseyo) - frm, 안녕 (annyeong) - inf여보세요 (yeoboseyo) - on phone
How are you?I'm fine, thanks.
어떻게 지내세요? (eotteohke jinaeseyo?)안녕하셨습니까? (an nyeong ha siut seum ni ka?)
잘지내요 (jaljinaeyo)
Long time no see
오랜만이다 (orenmanida)
What's your name?My name is ...
당신의 이름은 무엇입니까?(dangsinui ireumeun mueosip nikka?) inf성함이 어떻게 되십니까?(sungham ee uttoke daesipnika?) frm
제 이름은 ... 입니다 (je ireum-eun ... imnida)
Where are you from?I'm from ...
어디서 오셨어요? (Eodiseo osyeosseoyo)
저는 ... 에서 왔어요 (Jeoneun ... eseo wasseuyo)
Pleased to meet you
만나서 반갑습니다 (Mannaseo bangapseumnida) [frm polite]만나서 반가워요 (Mannaseo bangawoyo) [inf polite]
Good morning/afternoon/evening
안녕하십니까 (annyeong hashimnikka)
Good night
안녕히 주무십시요 (annyonghi jumushipsiyo) - frm잘자 (jal jja) - inf
Goodbye
안녕 (annyeong)안녕히 계세요 (annyeonghi gyeseyo) - you are leaving안녕히 가세요 (annyeonghi gaseyo) - you are staying
Good luck
행운을 빌어요 (haeng un eul bil eo yo) frm행운을 빈다 (haeng un eul bin da) inf
Cheers/Good health!
건배 [乾杯] (geonbae) lit. "dry glass", 위하여 (wihayeo)
Bon appetit
잘 먹겠습니다 (jal meokkesseumnida) - before a meal잘 먹었습니다 (jal meogeosseumnida) - after a meal맛있게 드세요 (masitkke deuseyo)
Bon voyage
잘다녀오십시오! (jalda nyeoo sip sio!)
I don't understand
모르겠습니다 (moreugesseumnida)
Please speak more slowly
천천히 말씀해 주세요 (Cheoncheonhi malssuemhae jeseyo)
Please write it down
적어 주세요! (Cheogeo jeseyo!)
Do you speak Korean?Yes, a little
한국말 하실 줄 아세요? (hangukmal hasil jul aseyo?) - frm한국말 할 줄 아니? (hangukmal hal jul ani?) - inf
예, 조금요 (yae, jogeumyo) - frm응, 조금 (eung, jogeum) - inf
How do you say ... in Korean?
... 를 한국말로 어떻게 말해요?(... reul hangukmal-lo eotteoh-ge maraeyo?)
Excuse me
실례하겠습니다! (shillehagessumnida)
How much is this?
이게 얼마예요? (ige eolmayeyo?)
Sorry
미안합니다! (mianhamnida)
Thank youResponse
감사합니다 (kamsahamnida) - frm고맙습니다 (komapsumnida) - inf
아니에요 (anieyo)
Where's the toilet?
화장실이 어디예요? (hwajangsiri eodiyeyo)
I love you
사랑해 (sarang hae)
Leave me alone!
혼자 내버려 두십시오! (honja naebeoryeo dushipshio)

These are some useful phrases I will memorize. I plan to take the Korean language classes and go to conversation groups to learn the language and meet new people. leave comments about your experiences, I'd love to hear from you!