请问这句话是虚拟语气吗？

he would have paid twice much as for the house if the salesgirl had insisted because he really wanted it
谢谢，那天我查看if引导的虚拟语气的语法内容。说在主句中的should只用于第一人称，would可以用于各种人称。可是例句中又有if he should come,i would tell him.he 是第二人称啊。

是虚拟语气吗? if he runs faster，he minght win .请问这是虚拟语气吗 是虚拟语气么 if you are late,you will not find a seat这句话是虚拟语气吗？为什么是主将从现？ If you should change your mind,do let me know.虚拟语气在这句话中是怎么体现的？ She would have travelled more except for lack of money. 怎么看得出这句话是虚拟语气？ 请问有"would better not doing sth"的词组,是虚拟语气吗 请问英语中的虚拟语气是怎样的？ 英语翻译四句话（虚拟语气） 第一句是虚拟语气 will,这句为什么要用虚拟语气呀？有宁愿就要用虚拟语气了？