________ for the fact that she broke her leg, she might have passed the exam.
A.Hadn’t it beenB.Had it not beenC.Was it notD.Were it not
B

試題分析:考查虛擬語氣中的倒裝句。在條件句的虛擬語氣中,如果省略了if,要享受部分倒裝。本題是與過去事實(shí)相反,條件句中要使用過去完成時(shí)的時(shí)態(tài),本題省略了if,故使用B項(xiàng)。句意:如果不是因?yàn)樗耐葦嗔,她也許會(huì)通過這次考試。故B正確。
點(diǎn)評(píng):在條件句中,如果過去事實(shí)相反,條件句中使用過去完成時(shí),主句使用“情態(tài)動(dòng)詞+have done”;
如果主句與現(xiàn)在事實(shí)相反,條件句中使用過去時(shí),be動(dòng)詞使用were,主句中使用“情態(tài)動(dòng)詞+動(dòng)詞原形”;如果與將來事實(shí)相反,條件句中有三種:過去時(shí);were to do ;should+動(dòng)詞原形,主句使用“情態(tài)動(dòng)詞+動(dòng)詞原形”;要特別注意如果省略了if,句子要使用部分倒裝的形式,把助動(dòng)詞,be動(dòng)詞,情態(tài)動(dòng)詞提之主語前。
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