请问这句话中括号里的句子是什么句型,为什么要把操作词had提前呢?应该是虚拟,这样倒装的是什么句子呢We should have a mass national demonstration on the NHS 64th Birthday (had it lived that long!)

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请问这句话中括号里的句子是什么句型,为什么要把操作词had提前呢?应该是虚拟,这样倒装的是什么句子呢
We should have a mass national demonstration on the NHS 64th Birthday (had it lived that long!)

had it lived that long=if it had lived that long虚拟条件句中的谓语中含有“had,should,were"等助动词时,可以把这三个词放在主语前,并把if去掉.这就是虚拟条件句的倒装.不过,个人觉得,应该用:should it live tha...