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精英家教網 > 高中英語 > 題目詳情

We were swimming in the lake ________ suddenly the storm started.


  1. A.
    when
  2. B.
    while
  3. C.
    until
  4. D.
    before
A
解析:
本題意為“我們正在湖里游泳,這時突然刮起了風暴。”when引導時間狀語從句時,表示“在……時候”;
也可以引導定語從句,此外還可用做并列連詞,表示“就在這時/那時。”while既可引導時間狀語,也可以做連詞,意為“而,然而”;
until意為“直到……”;
before意為“在……之前。”這二者都只引導時間狀語。
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