1 If she has finished / finishes her work now,she may / can go home -------- 这是条件状语从句,与虚拟语气没有关系.
2 If she finishes / has finished her work before Monday,she will / may / can go on a factory trip ------ 这也是条件状语从句,与虚拟语气没有关系.
总结：都是“主将从现”.
虚拟语气中的条件从句条件从句中,能不能用到have+过去分词?比如说,可不可以说If You have told me,