散文精选网虚拟语气的倒装？
属于部分倒装，当虚拟条件句中含有 were，had，should，could等动词时，可以将if省略，然后将 were，had，should，could 等词移至句首：
1. If he should fail，he would kill himself. →Should he fail，he would kill himself. 万一失败，他就会自杀。
2. If I were you，I would do it at once. →Were I you，I would do it at once. 假若我是你，我就会马上做。
3. If I could do it，I would. →Could I do it，I would.
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虚拟语气什么时候用倒装？
if的虚拟条件句中，如果含有were，should，had等动词时，省略if并将were，should，had等词移到句首：这就是虚拟条件句的倒装
有时可将条件从句的连词if省略，但此时应用倒装句型，即把从句中的 等提到句首：
If he should fail，he would kill himself. →Should he fail，he would kill himself. 万一失败，他就知会自杀。
If I were you，I would do it at once. →Were I you，I would do it at once. 假若我是你，我道就会马上做。
If I could do it，I would. →Could I do it，I would.
If I could do it，I would.
→Could I do it，I would.
要是我能做此事，我一定会做。
If he had seen you yesterday，he would haveasked you about it.
→Had he seen you yesterday，he would haveasked you about it.
他昨天要是看到了你，他就会问你这事了。
??Were I Tom,I would refuse. 如果我是汤姆，我会拒绝。
??Should it be necessary,I would go. 假若有必要，我会去的。
??Had it not been for the bad weather we would have arrived on time. 若不是天气坏，我们就准时到达了。
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??① 若条件从句为否定句，否定词not应置于主语之后，而不能与were,should,had 等缩略成Weren’t,Shouldn’t,Hadn’t而置于句首。
??② 有时省略if后提前的had不是助动词：
Had I time,I would come. 假若我有时间，我会来的。(=If I had time)
if的虚拟语气倒装句的条件？
虚拟条件句中，必须要有should、were、had，if才能省略,虚拟条件从句才能倒装。
在虚拟条件句中，如果从句中有were、had 、should,可省略if，把were、had、should提到句首，变为倒装句式。
例子：
1.Were I in school again(=If I were in school again),I would work harder.
如果我能再上一次学，我会学习得更努力。
2.Had you asked me(=If you had asked me),I would have told you.如果你问我，我就会告诉你。
虚拟语气省略倒装例句？
虚拟语气的倒装是将if省略，然后将were,should或had和主语颠倒顺序。例如:
Were I Tom，I would refuse. 如果我是汤姆，我会拒绝。
Had it not been for the bad weather we would have arrived on time. 若不是天气坏，我们就准时到达了。
Should he agree to go there，we would send him there. 要是他答应去的话，我们就派他去了。
