1[(現在)完了時制で；通例 ever 〜] それ以来(ずっと)‖He caught cold last week and has been in bed ver . 彼は先週かぜをひき, それ以来ずっと寝込んでいる《◆He has been in bed ever since he caught cold last week. の since を残して he caught ... が前に出た構文》/I've never seen anything like it, before or 〜. あとにもさきにもあんなことは見たことがない.