请对该句子中 Had i paid做英语语法分析。谢谢。 这个英语句子有语病吗？没有的话求分析主要语法：Had I p...

\u82f1\u8bed\u8bed\u6cd5\u5206\u6790

\u672c\u53e5\u4e0d\u5b8c\u6574 \u53ef\u4ee5\u770b\u4f5c\u662f\u4e00\u4e2a\u540d\u8bcd\u77ed\u8bed\uff0c\u5373\u672c\u53e5\u7f3a\u8c13\u8bed\u3002
The tensor description\u662f\u4e3b\u8bed of the distortion\u662f\u4ecb\u8bcd\u77ed\u8bed\u4f5c\u5b9a\u8bed\u4fee\u9970\u524d\u9762\u7684\u540d\u8bcd of surface electromagnetic fields \u662f\u4ecb\u8bcd\u77ed\u8bed\u4f5c\u5b9a\u8bed\u4fee\u9970the distortion\u3002
generated by horizontal electric and magnetic dipole\u662f\u8fc7\u53bb\u5206\u8bcd\u77ed\u8bed\u4f5c\u540e\u7f6e\u5b9a\u8bed.\u4fee\u9970\u524d\u9762\u7684\u540d\u8bcd\u3002\u540e\u9762\u5e94\u8be5\u6709\u8c13\u8bed\u3002\u3002\u3002

\u6ca1\u6709\u8bed\u75c5\uff0c\u8fd9\u53e5\u8bdd\u662f\u865a\u62df\u8bed\u6c14\u3002\u672c\u6765\u5e94\u8be5\u662fIf I had I paid more attention,I wouldn't have made such a foolish mistake.\u5982\u679c\u6211\u591a\u6ce8\u610f\u4e00\u70b9\uff0c\u6211\u5c31\u4e0d\u4f1a\u72af\u8fd9\u4e48\u611a\u8822\u7684\u9519\u8bef\u3002 \u5f53if\u5f15\u5bfc\u7684\u865a\u62df\u8bed\u6c14\u4ece\u53e5\u4e2d\u6709had,should,were\u65f6\uff0c\u53ef\u4ee5\u7701\u7565if,\u5e76\u5c06\u8fd9\u4e09\u4e2a\u8bcd\u63d0\u524d\u3002\u6240\u4ee5\u5c31\u51fa\u73b0\u4e86\u4f60\u5199\u7684\u8fd9\u4e2a\u53e5\u5b50\u3002

倒装句分为全倒装句和半倒装句
1、“全倒装句”：是把整个谓语动词完全移到主语之前。
例：Here comes the postman. 这里的谓语comes完全移到了主语the postman前面，所以是全倒装。
2、“半倒装句”：只把谓语的一部分（如助动词、情态动词等）移到主语之前，或把句子的强调部分提前。
例：Only once was John late to class. 这里只是将助动词(be动词)was移到主语John前面，而实意动词late仍在主语后面，所以是半倒装。

本句中Had i paid属于半倒装句，因为它只是将助动词 had 移到主语 I 的前面，而实意动词 paid 仍在主语的后面，所以是部分倒装，即半倒装句。

此句包含了虚拟语气倒装。
虚拟条件句的if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 come earlier, you would have met him
　=If you had come earlier, you would have met him.　
　 Should it rain, the crops would be saved.
　=Were it to rain, the crops would be saved

这里是倒装句表达假设，可以表达if的意思

表达对过去的假设
if I had paid more attention then, I wouldn't have made such a stupid mistake.

扩展阅读：had虚拟语气倒装句的否定 ... 用had造句10个 ... 用heard造句子 ... had造句简单小学 ... had造句子简单10句 ... had开头的句子 ... had开头的虚拟语气 ... 高情商的回话技巧 ... had度过的造句 ...