I’m going to introduce two noun particles this time. One, -들, is attached to a noun to make it plural. Two, -의, is attached to a noun to signify possession by that noun.
N + 들
1. -들 is attached to a noun to make that noun plural, but this is only to emphasize plurality, because in Korean, a noun can mean plural without this particle too. For example, 한국여자 can mean Korean girls (plural), but 한국여자들 means Korean girls, emphasizing Korean girls in general.
N + 의
2. -의 is attached to a noun to mean possession by that noun. The equivalent in English is to attach ‘s to a noun. But this isn’t always equivalent. In Korean, 의 is often used in situations where we wouldn’t attach ‘s to a noun, but its case by case. In general, it means possession.
In addition, even though this word is pronounced ‘uh-ee’ if you go by my pronunciation guide, it is sometimes pronounced ‘ehh’, similar to ‘에’, but it only has this pronunciation when its used as a possessive particle.
Note: When saying mine (저의, 나의), this often gets contracted to ‘제, 내’ in speaking. When saying yours (너의), this gets contracted to ‘네’, or ‘니’ when speaking.
한국사람들이 보통 아주 친절해요. = Usually Korean people are very kind/friendly.
내 (나의) 연필이에요. = It’s my pencil.