语法与词汇
13.
If the captain ____more careful, his ship would not have been sunk.
A、
should be
B、
were to be
C、
Were
D、
had been
【正确答案】
D
【答案解析】
虚拟语气。if引导的非真实性条件句，表示与过去事实相反的情况，从句用“if+主语+had+-ed分词”结构，主句使用“主语+would have+-ed分词”结构。
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