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(used with the present perfect or past perfect tense )与现在完成时或过去完成时连用 from a time in the past until a later past time, or until now 自…以后;从…以来 She's been off work since Tuesday. 星期二以来她一直没上班。 We've lived here since 2006. 从 2006 年开始我们便住在这里。 I haven't eaten since breakfast. 早饭以后我还没吃过东西呢。 He's been working in a bank since leaving school. 他中学毕业以后一直在一家银行工作。 Since the party she had only spoken to him once. 那次聚会以后,她只和他说过一次话。 ‘They've split up.’ ‘Since when?’ “他们分手了。” “什么时候的事儿?” That was years ago. I've changed jobs since then. 那是多年以前的事了。自那以来我已经换过几个工作了。
- since when?
used when you are showing that you are angry about something (表示气愤)何曾,什么时候
Word Originlate Middle English: contraction of obsolete sithence, or from dialect sin (both from dialect sithen ‘thereupon, afterwards, ever since’).