それはどのくらい前の事? ラジオ英会話156ダイアログよりMy roommate moved out, so I’m living by myself.Really?How long ago was that?引越しする=move引っ越していく=move outHow long ago was that?それはどのくらい前の事?大西先生もHow long ago was that?が中々すぐに口から出てこない言い回しとの事。