谁能给我总结一下虚拟语气的用法(包括一般的规律以及表语、主语、宾语和...答:11、主语从句中的虚拟语气 在It is necessary,important,strange,natural, advisable, anxious, compulsory, crucial, desirable, eager, essential, fitting, imperative(绝对必要), impossible, improper, obligatory, possible, preferable, probable, recommended, urgent, vital etc. ;it is a pity;It is requested...