since在時(shí)間狀語(yǔ)從句中,延續(xù)性動(dòng)詞與非延續(xù)性動(dòng)詞都可接.接短暫性動(dòng)詞時(shí)表示從這個(gè)動(dòng)作發(fā)生之時(shí)算起一直到現(xiàn)在的這一段時(shí)間.接延續(xù)性動(dòng)詞時(shí)表示從這個(gè)動(dòng)作結(jié)束之時(shí)算起起到現(xiàn)在的這一段時(shí)間.如：
He has been in the school since 1998.他1998年以來(lái)一直在這所學(xué)校工作.
He has been in the company since he studied in Nanchang University.他南昌大學(xué)畢業(yè)后一直在這家公司工作.
since在原因狀語(yǔ)從句中也是延續(xù)性動(dòng)詞與非延續(xù)性動(dòng)詞都可接.但那沒(méi)有多大的探討意義.