题目
Without electronic computers, much of today's advanced technology _________.A. will not have been achievedB. have not been achievedC. would not have been achievedD. had not been achieved
Without electronic computers, much of today's advanced technology _________.
A. will not have been achieved
B. have not been achieved
C. would not have been achieved
D. had not been achieved
题目解答
答案
C. would not have been achieved
解析
步骤 1：理解句子结构
句子的主语是 "much of today's advanced technology"，谓语动词需要与主语保持一致。句子的条件部分是 "Without electronic computers"，表示没有电子计算机的情况下，因此需要使用虚拟语气。
步骤 2：确定虚拟语气的时态
由于句子描述的是一个与过去事实相反的假设，因此需要使用过去完成时的虚拟语气。过去完成时的虚拟语气形式是 "would have done"。
步骤 3：选择正确的选项
根据以上分析，选项 C "would not have been achieved" 符合句子的语法和语义要求。
句子的主语是 "much of today's advanced technology"，谓语动词需要与主语保持一致。句子的条件部分是 "Without electronic computers"，表示没有电子计算机的情况下，因此需要使用虚拟语气。
步骤 2：确定虚拟语气的时态
由于句子描述的是一个与过去事实相反的假设，因此需要使用过去完成时的虚拟语气。过去完成时的虚拟语气形式是 "would have done"。
步骤 3：选择正确的选项
根据以上分析，选项 C "would not have been achieved" 符合句子的语法和语义要求。