山やま を 登のぼったこと が ある。yama o nobottakoto ga aru.I have climbed a mountain before.Breakdown of yama o nobottakoto ga aru.山やまyamamountainをodirect object particle〜こと が ある〜koto ga aruto have done (before)登のぼるnoboruto climbElon.io is an online learning platformWe have hundreds of Japanese lessons and thousands of exercises.Start learning Japanese nowNihon-shiki romanizationwatasi ha tyuugoku kara kimasitaHepburn romanizationwatashi wa chuugoku kara kimashita