请帮忙分析下语法Had he not agreed to attend ,some say,the convention

请帮忙分析下语法Had he not agreed to attend ,some say,the convention 请帮忙下改错：he did not say anything to her,and she did not speak 解释下为什么Both the writer and the poet HAVE agreed to attend the He had hardly had time to settle down.这话里怎么有俩个had,帮忙分析下. i want to be some of use to the sosiety请帮忙分析一下语法句子结构 ...had not seemed to Vasari to be so similar ...帮忙分析下句式怎么是se 请分析这句英语的语法The cave might never have been discovered had not 语法题,请帮忙分析下句子成分 语法：Then she heard a quiet voice say,"We must attend to the c 英语句子成分分析.Much interested ,he agreed to give it a try The bus 帮忙分析下这句话的语法结构：Trying to add breakpoint to file that does not Write a T if the sentence is true.请帮忙分析下这个句子的语法