If I hadn’t stood under the ladder to catch you when you fell, you ____ now.
A.wouldn’t be smilingB.couldn’t have smiled
C.won’t smileD.didn’t smile
A

試題分析:考察錯(cuò)綜條件句。本題的條件句中是與過(guò)去的事實(shí)相反,故使用過(guò)去完成時(shí),主句是與現(xiàn)在的事實(shí)相反,故使用“情態(tài)動(dòng)詞+動(dòng)詞原形”;句意:如果在你摔倒的時(shí)候,我不在梯子后面扶著你,你現(xiàn)在就不會(huì)這樣笑了。故A正確。
點(diǎn)評(píng):條件句的虛擬語(yǔ)氣是考查的重點(diǎn)。如果過(guò)去事實(shí)相反,條件句中使用過(guò)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(guò)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(lái)事實(shí)相反,條件句中有三種:過(guò)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(yǔ)前。另外還要注意條件句和主句不同的時(shí)間所形成的挫折條件句。
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