过去将来完成时与虚拟语气

I was to have made a speech if _________.

A. I was not called away

B. nobody would have called me away

C. I had not been called away

D. nobody called me away

请问老师，这题if引导非真实条件句，为什么主句又用的过去将来完成时？还有请问怎么区分陈述语气的时态和虚拟语气呢？

提前谢谢老师！

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分类：虚拟语气

最佳答案 2021-06-12 09:28

I was to have made a speech if I had not been called away.

sb was to have done sth 这个结构表示某人本来打算或安排在过去做某事，但由于某种原因没有做某事。通常后面用but引导并列分句解释原因是什么，but后分句用陈述语气表示事实。例如，I was to have made a speech, but I had been called away. 本句没有用but分句，而是用了if虚拟条件句，if从句用虚拟语气表示与事实相反的假设。注意这个if从句并不是修饰谓语动词was, 而是修饰不定式完成体的，是不定式短语的内部结构，所以这个if从句是不可以放在句首的。

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曹荣禄 -

擅长：动词用法,句法问题 | 采纳率 82% | 回答于 2021-06-12 09:12

过去将来完成时与虚拟语气

最佳答案 2021-06-12 09:28

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