my-korean1-2nd-ed

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UNIT 9 얼마예요?
(4) A: 사무실이 몇 층에 있어요? Which floor is your office on?
B: 삼층에 있어요.* It’s on the third floor
(In Korea, the ground floor is designated 일층 (floor 1). So 삼층 is
actually equivalent to the second floor in Australia.)
(5) A: 한국어 공부 얼마나 했어요? How long have you studied
Korean?
B: 삼 주 했어요. 3 weeks.
(6) A: 이거 배달 좀 해 주세요. Could you deliver this please?
B: 주소가 어떻게 되세요? Please give me the address.
A: 현대 아파트 칠동 천육호예요. 1006, Block 7, Hyundai
Apartments.
In examples 2, 3, 4 and 6 a subject particle has been used (+이 in 2, 3 and 4,
+가 in 6). This is because in these sentences, your attention is being focussed
on the subject (i.e. monthly pay, Chuseok, office, address). When the subject
noun ends in a consonant, you use +이, when it ends in a vowel you use +가.
Normally, in conversation this subject particle can be omitted.
Note that it is important to remember for which items you must use pure
Korean numbers and in which cases you must use Sino-Korean numbers.
Eventually you should not have to think about which number system to use.
Normally, numbers are written using digits and not spelled out in Hangul. So
when a number is written as, for example, 24, you need to know whether to
read it as 스물넷 or as 이십사 to avoid sounding like a foreigner!