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        1. My mother was cooking while I____the radio.
          A、listened to
          B、have listened to
          C、was listening to
          C

          試題分析:句意:當(dāng)我正在聽收音機(jī)時(shí),我的母親正在做飯。While引導(dǎo)時(shí)間狀語從句時(shí),強(qiáng)調(diào)動作的同時(shí)發(fā)生,本題主句為過去進(jìn)行時(shí)態(tài),故從句中也是過去進(jìn)行時(shí)態(tài)。選C。
          點(diǎn)評:英語中的時(shí)態(tài)主要是借助于時(shí)間狀語與上下文語境來進(jìn)行判斷。解答此類題型,首先要注意句子中的時(shí)間狀語,如果沒有則要通過分析上下文,結(jié)合語境來判斷句子的時(shí)態(tài)。本題中則要結(jié)合while的習(xí)慣用法來判斷時(shí)態(tài)。
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