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since的用法

健康 更新时间:2025-03-15 13:14:02

  1、接時間點:如 I have stayed in that country since 1995.要求:謂v.用現在完成時,而且須是延續性動詞.

  2、接一段時間 + ago:如 They have lived in that house since two years ago.要求:謂v.用現在完成時,而且須是延續性動詞.

  3、接時間狀語從句:如 I have loved her since I met her last time./ Lily has stayed at home since she left school.要求:主句的謂v.用現在完成時,而且須是延續性動詞;從句的謂v.用一般過去時,而且須是終止性動詞.

  4、用于句型“It’s / It has been + 一段時間 + since + 時間狀語從句”中,譯作“自從…以來,已經…(時間)了”.如 It’s / has been three months since he moved to this city.要求:主句的謂v.用一般現在時或現在完成時;從句的謂v.用一般過去時,而且須是終止性動詞.

  5、用于句型“一段時間 + has passed since + 時間狀語從句”中,譯作“自從…以來,…(時間)已經過去了”.如上個例句還可寫成:Three months has passed since he moved to this city.要求:主句的謂v.用現在完成時,而且動詞必須是has passed;從句的謂v.用一般過去時,而且須是終止性動詞.

  6、當since用于否定句時,主句的謂v.可以是終止性動詞.如 He hasn’t seen the film since last month.

  7、相關詞組:“從那時起”:ever since、since then、from then on.注:ever since作為一個詞組,放句尾可單獨使用.如I have given up smoking ever since.另外,還可在since後接句子.since前加ever,隻是加重語氣而已.如 I have given up smoking ever since I caught a bad cough.

  8、since還可引導原因狀語從句,譯作“由于;因為”,相當于because.如 Since he was lazy,he didn’t finish his homework.

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