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词汇 since
释义 since音标:[ sins ]    短语和例子★ 1. 主句中动词用现在完成式时, since 所引导的子句须用过去式: We have both changed since we parted. 分别以来彼此都变了。 2. 主句主语为 it, 动词用现在[过去]式时, since 引导的子从句须用过去[过去完成]时: It is two years since we parted. 我们分别以来有两年了。 It was two years since we had parted. 那时我们已经分别两年了。 2. 因为,所以,既是。 短语和例子★在表示原因的几个连词中,语气最强的词是 because, 其次是 since, 再其次是 as, for。 because 是直接说明问话 why 的‘理由’、‘原因’。 since 是站在‘时间’立场用‘既是…就…’的意义去说明事件关系中的自然结果的;表达这一理由的 since 通常放在句首,但在省略句中也可放在句中: S- force is no remedy, let us try conciliation. 武力既不中用,就想法和解吧。 That is a useless, since impossible, proposal. 既然不可能,那就是一个没用的提议。…以来,以后,…之后,自从。 S- seeing you I have had good news. 见面以后得到(你的)不少好消息。 since midnight 午夜之后(到此时)。 since then 其后,从此一直。adv.1.以后,此后,以来。 ★由前置词惯用短语 since then, since that 略去 then (时), that (事)而形成:I have not seen him since (=since then). (那时)以后没见过他。2.(距今几年)以前;(从那时候起几年)以前。短语和例子★由 conj. 1. 义转变成的: It is two years since (we parted).=We parted two years since (=ago). 我们是在两年以前分别的。 It was two years since (we had parted).=We had parted two years since (=before). 我们是在那以前两年分别的。 ever since 从那时起,此后一直。 long since 好久以前,已久。 not long since 就在不久,未久。
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