副词（作状语）：now right nowjust nowat the moment right now at this time nowadays for the time beingat presentcurrentlypresently形容词（做定语）currentpresentexisting名词the present
now（现在）, right now(现在，马上，带有催促的意味), at the moment（此刻）,at this very moment(此时此刻), for the moment(目前), at present（现在，目前）,currently（现在）, nowadays(当下，当今)就懂这么多，看能不能帮到你
