When you counting for something, you need to use counters for different subjects. And counters are used along with native Korean numbers.
English : number + noun > two books
Korean : noun + number + counter > 책 두 권
※Let’s have a look at some Korean counters.
개[gae] : things (general counter)
병[byeong] : bottles
권[gwon] : books
명[myeong] : people
장[jang] : paper, tickets
마리[ma-ri] : animals
※ some examples.
있어요[i-sseo-yo] : to have, to exist
없어요[eop-sseo-yo] : not to have, not to exist
A: 물 있어요? : Do you have water?
B: 네, 있어요. : Yes, I do.
A: 몇 병 있어요? : How many bottles do you have?
myut byeong i-sseo-yo
B: 네 병 있어요. : I have four bottles of water.
ne byeong i-sseo-yo