Question

Simon is very regretful. If he had been more careful, he _____ such a big mistake.

A．hasn’t made	B．hadn’t made
C．won’t have made	D．wouldn’t have made

Answer 1

D

試題分析：句意:西蒙是很后悔的，如果他再仔細(xì)點(diǎn)，他就不會(huì)犯這么大的一個(gè)錯(cuò)誤。這里是虛擬語氣，根據(jù)had been可以看出是對(duì)過去的虛擬，故主句用would have done的形式，根據(jù)句意故選D。
點(diǎn)評(píng)：本題難度適中。虛擬語氣是近幾年高考的熱點(diǎn)，虛擬語氣的情況復(fù)雜，形式多樣，需要考生牢記它們的不同的用法，再根據(jù)不同的語境分析句子應(yīng)該用哪種情況的虛擬。這里是從句和主句都是對(duì)過去的虛擬。
即學(xué)即練：Tell John not to leave the house unless he _____that the lights ______ .
A. will make sure, turn off     B. makes sure; are turned off
C. will make sure; will turn off    D. makes sure; will be turned off
解析：B。第一空在條件狀語從句中用一般現(xiàn)在時(shí)代替一般將來時(shí)；第二空所有的燈被關(guān)掉。