The Plural Particle 들The particle 들 is added to a noun which pluralizes the noun it attches to.다들 도착했어?Have you all arrived?한국 사람들은 무슨 외국 음식을 좋아해요?What kind of foreign food do Koreans like?이런 것들 해도 안 됩니다It is not okay to do all these things.작년보다 기업들 의 투자가 더 많다Compared to last year, there were more company investments.