题目内容
________ her, she would have jumped into the river.
[ ]
A.If I had stopped
B.Unless I had stopped
C.If I hadn't stopped
D.If I didn't stop
答案:C
解析:
解析:
一般情况下unless可与if…not互换,但在有些情况下二者是不能互换的,其中之一就是unless不能用来引导虚拟条件句,故不能选B.当所述情况与过去的事实相反时,虚拟条件句用过去完成式.又根据句意,从句应为否定含义,故同时排除A和D.
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