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        1. Mary _____ by the lake when a black cat ran past her.
          A.satB.has satC.was sittingD.sits
          C

          試題分析:此題重點(diǎn)考查過去進(jìn)行時(shí)的基本用法,表示在過去某個(gè)時(shí)刻正在進(jìn)行的動(dòng)作或存在的某種狀態(tài)。根據(jù)語境可知此句的含義一只黑貓跑過其身邊的時(shí)候Mary正坐在小湖邊。故用過去進(jìn)行時(shí)。過去進(jìn)行時(shí)的基本構(gòu)成是was或were+ving,故選C。
          點(diǎn)評(píng):過去進(jìn)行時(shí)是各類考試中必考的內(nèi)容之一,要求學(xué)生必須掌握好基本用法和基本構(gòu)成。把握有兩點(diǎn),其一是過去的某個(gè)時(shí)刻,比如at that time yesterday;其二是正在進(jìn)行的動(dòng)作,有時(shí)還要注意上下文的語境。
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