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        1. When the teacher came into the classroom, the students ____ in groups.
          A.workB.have workedC.were workingD.a(chǎn)re working
          C

          試題分析:句意:當(dāng)老師走進(jìn)教室的時(shí)候,學(xué)生正在分組學(xué)習(xí)。老師進(jìn)來這個(gè)動(dòng)作發(fā)生在過去,所以學(xué)生正在做某事,是過去的動(dòng)作,所以用過去進(jìn)行時(shí)態(tài),故選C
          點(diǎn)評(píng):動(dòng)詞的時(shí)態(tài)是學(xué)習(xí)英語過程中非常重要的知識(shí)。而很多的題目,句中并沒有像本題一樣有明確的時(shí)間,很多要通過上下文的判斷得知。過去進(jìn)行時(shí)既可以表示動(dòng)作在過去的某個(gè)時(shí)間正在進(jìn)行,也可以表示動(dòng)作在過去的某一段時(shí)間一直在進(jìn)行,本題不難,平時(shí)加強(qiáng)記憶,理解即可。
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