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在if从句中,如果含有“were,should,had’’时,可省去if而将“were,should,had’’置于句首,构成倒装句.例如：Were l in your position,1 would go．如果我处在你的位子上,我就走了.Had you arrived five minutes earlier,you could have seen them off．如果你早到五分钟,你就可以给他们送行了.Should he e,tell him to ring me up．如果他来的话,叫他打 ... 给我.HAVE这个词比较特殊.had作为实义动词是能提前的.比如一般疑问句问实意动词时通常要加助动词DO.比如DO you like English?但HAVE就可以用两种方式表达.have you a pen?= do you have a pen?不过,一般情况下.根据旧语法,非常严格的时候,Had I time这样的方式还是不要用.最好用if i had time.你知道它没错就行了.你自己用的时候还是用普通的吧.

如果是对过去动作的虚拟，if 从句使用过去完成时即谓语用 had + 过去分词，就是你说的这个助动词 had此时，可以把 had 提前到句首，并省略 if如：If you had taken my advice, you would have sueeded.= Had you taken my advice, you would have sueeded.

指的是与过去情况相反的虚拟条件句。省略if后从句要倒装。had是过去完成时的助动词。如：If we had found him earlier, we could have saved hislife.要是我们当时早点找到他的话，我们就可以救活他。→Had we found him earlier, we could have saved his life.

if he had done sth 可以省略if倒装为 had he done sth.had就是过去完成时中的助动词had。

要注意，在虚拟条件状语从句中，省略连词的倒装形式的句首不能用动词的缩略形式。如我们可说 Were I not to do., 而不能说 Weren't I to do.建议你去看看百度百科的虚拟语气部分，很全。

如果改成非倒装的形式， If it rained, the crops would be saved.

坦白讲我不认为这是个虚拟从句如果认为它是虚拟从句的话，我们应该这样翻译，如果这位女士的财物足够少的话，她只用一个箱子就足够了。但是，我们完全还可以这样翻译，这位女士的财物这样的少，所以她可以用一个箱子就足够了。而且后面的一种翻译明显比前一个通顺得多，所以我觉得这只是个倒装句，目的在于强调“few”

对的关于虚拟语气的省略，你只需记住：若从句中有were、had或should，即可省略if，并将这三个词置于句首，构成半倒装。注：这儿的had是助词哦，不是实意动词~

虚拟条件句的从句部分如果含有were, should, 或had, 可将if省略，再把were, should或had 移到从句句首，实行倒装。　 Were they here now, they could help us.　=If they were here now, they could help us.　 Had you e earlier, you would have met him　=If you had e earlier, you would have met him.　　 Should it rain, the crops would be saved.　=Were it to rain, the crops would be saved.

本文标题:虚拟条件句中if的省略及倒装，had是指哪个had

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