5．Without our team's great effort，the art exhibition last week      such a great success．（　�。�
A．wouldn't beB．won't be
C．wouldn't have beenD．won't have been

分析 沒有我們隊的極大的努力，上周的展覽就不會有如此的巨大成功．

解答 答案是C．本題考查的是含蓄的虛擬條件句．英語中表示條件時常常沒有連詞if，而是用with、without、otherwise、but等形式表達(dá)條件，這種類型的虛擬語氣被稱之為含蓄的虛擬條件．本題中without表示"如果沒有"，相當(dāng)于一個虛擬條件句．這里要表達(dá)的意思是"如果沒有我們隊的極大的努力"，由主句中的last week可見這是一個與過去事實(shí)相反的虛擬；與過去事實(shí)相反的虛擬條件句中往往用過去完成時，而主句中則用"would/should/could/might+have done"，由此判斷答案是C．

點(diǎn)評 在掌握虛擬語氣的規(guī)則的基礎(chǔ)上，判斷題干屬于什么類型的虛擬，然后根據(jù)語境，選用恰當(dāng)?shù)膭釉~形式表達(dá)虛擬．

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