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        1. We had to wait half an hour       we had already booked(預(yù)定) a table.
          A.sinceB.a(chǎn)lthoughC.untilD.before
          B

          試題分析:since由于,自從……以來; although雖然,盡管;until直到;before在……之前。句意:盡管我們已經(jīng)預(yù)定了一張桌子,我們還得等半個小時。結(jié)合語境可知選B。
          點評:連詞在句子中主要起聯(lián)系上下文的作用,他們之間的區(qū)別就是表示邏輯關(guān)系的不同,所以在解題時先要理解上下文含義,然后根據(jù)上下文邏輯關(guān)系選擇合適的連詞。連詞的用法都比較多,語義之間還有交叉,熟記其基本應(yīng)用規(guī)則,了解其區(qū)別,注意固定搭配對象,是做好此類題型的關(guān)鍵。
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