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        1. ---It’s raining! When did it start?
          ---I don’t know exactly. In fact, it ____ all this afternoon.
          A.lastsB.has lasted C.lastedD.will last
          B

          試題分析:句意:下雨了!什么時(shí)候開(kāi)始的?——我不知道確切時(shí)間。實(shí)際上,整個(gè)下午已經(jīng)持續(xù)了整個(gè)下午。結(jié)合語(yǔ)境可知下文描述的是從過(guò)去某時(shí)持續(xù)到現(xiàn)在動(dòng)作,故用現(xiàn)在完成時(shí)態(tài),選B。
          點(diǎn)評(píng):英語(yǔ)中的時(shí)態(tài)主要是借助于時(shí)間狀語(yǔ)與上下文語(yǔ)境來(lái)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(yǔ),如果沒(méi)有則要通過(guò)分析上下文,結(jié)合語(yǔ)境來(lái)判斷句子的時(shí)態(tài)。
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