to be helpful 役立つ [やくだつ] /(v5t,vi) to be useful/to be helpful/to serve the purpose/(P)/ ------- 役に立つ [やくにたつ] /(v5t) to be helpful/to be useful/(P)/ ------- 役だつ [やくだつ] /(v5t,vi) to be useful/to be helpful/to serve the purpose/ ------- 力になる [ちからになる] /(exp,v5r) to be helpful/to be dependable/ |