Had you not helped us, we should have canceled this transaction.
假如没有你的帮助,这笔生意早就告吹了。
If I had V-ed, I would ...
结构︰Ifhad+过去分词,主词+would/should 等+原形动词+now/today
说明︰这是时态不一致时的假设句型,亦称混合假设条件句。即:if 子句若与过去事实相反,用过去完成式而主要子句若与现在事实相反,则用过去式助动词表示。此类主要子句句尾通常有表现在的时间副词,如 now,today 等。
If he had worked harder when young, he would be well off now.
如果他年轻时多努力一点,现在就能过得舒服些。
If I had been rich ten years ago, I could buy that house today.
如果十年前我有钱,今天我就能买下那栋房子了。
Had he told the truth, he wouldnt be punished now.如果他当时肯说实话,现在就不会受罪了。
Had he followed the doctors advice, he might be alive now.
当时他要是听了医生的建议,现在可能还活着。
I wish ... + V-ed ...
结构︰I wish++主词+动词过去式/过去完成式
说明︰I wish 之后以 that 子句受词时,该子句动词一定要用假设语气:若动词用过去式,表示与现在事实相反的愿望;若用过去完成式,则表示与过去事实相反的愿望。I wish+that-子句的句型也可用I would rather+that-子句取代。而 I hope 之后以 that 子句受词时,该子句用一般时态。
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