Question

If it ____for the snow, we____ the mountain yesterday.

A．were not, could have climbed	B．were not, could climb
C．had not been, could have climbed	D．hadn’t been, could climb

Answer 1

C

解析試題分析：考查條件句的虛擬語(yǔ)氣：句意：要不是因?yàn)樽蛱斓难�，我們就�?huì)爬到山上了。可知這是和過(guò)去相反的if虛擬條件句，if從句用If主語(yǔ)+had+done；主句：主語(yǔ)+should/would/could/might+have done，選C。
考點(diǎn)：考查條件句的虛擬語(yǔ)氣
點(diǎn)評(píng)：if的虛擬語(yǔ)氣非常重要，簡(jiǎn)要概括如下：1、表示與現(xiàn)在事實(shí)相反的情況，從句：If主語(yǔ)+過(guò)去時(shí)(Be動(dòng)詞用were)；主句：主語(yǔ)+should/would/could/might+do：　2、表示與過(guò)去事實(shí)相反的情況，從句：If主語(yǔ)+had+done；主句：主語(yǔ)+should/would/could/might+have done　3、表示對(duì)將來(lái)情況的主觀推測(cè)，從句：①if+主語(yǔ)+were to do②if+主語(yǔ)+should+do ③if+主語(yǔ)+did（動(dòng)詞過(guò)去式）/were ；主句：主語(yǔ)+should/would/could/might+do