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        1. Michael was watching TV_____ his father came in.
          A. when        B. while      C. as soon as
          A

          試題分析:A. when 當(dāng)…時(shí)候 B. while當(dāng)…時(shí)候      C. as soon as一…就;句意:邁克爾正在看電視時(shí),他的爸爸進(jìn)來了。came這個(gè)動(dòng)詞是個(gè)瞬間動(dòng)詞,只能與when連用,故需A
          點(diǎn)評(píng):when 既可以與延續(xù)性動(dòng)詞連用,也可以與瞬間動(dòng)詞連用,而while只能與延續(xù)性的動(dòng)詞連用,強(qiáng)調(diào)兩者同時(shí)進(jìn)行,多用進(jìn)行時(shí)態(tài)的形式。
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