三、连词引导过去完成体用法:有些连词引导的过去完成时可互换。
When I reached the station, the train had already left。
=I reached the station after the train had left。
=I didn’t reach the station until the train had left。
=The train had left before I reached the station。
在我到车站时,火车已经走了。
四、过去完成体的虚拟用法:表示与过去事态相反的主观设想。
1。 用于if, if only, as if引导的分句:
If you had worked hard, you would have passed the exam。 如果你努力学习的话,你就已经通过考试了。
If I were you, I would not do it。 我要是你,就不做这事。
If only I had finished it before。 要是我之前完成了这件事就好了。
I felt as if I had been a bird in the sky。我感觉自己好似天空一只小鸟。
2。 用于I wish, I would rather引导的that从句:
I wished that I had knew the answer to the question before he asked me。 我希望在他问我以前,我知道问题的答案。
I would rather you had told me the truth。 我宁愿你跟我说实话。
3。 用于expect, think, intend, mean, want, suppose等表示过去未曾实现的希望、打算或意图。
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