请帮忙分析下语法Hadhenotagreedtoattend,somesay,theconventionwouldnothavebeenheld.had放在he前面是什么语法现象,用ifhehadnot.,是不是一样?

Question

请帮忙分析下语法
Had he not agreed to attend ,some say,the convention would not have been held.
had 放在he 前面是什么语法现象,用 if he had not .,是不是一样?

Answer 1

虚拟语气倒装句.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 y...