I wish I____to Shanghai last month 为什么可以用would have gone?和过去

I wish I____to Shanghai last month 为什么可以用would have gone?和过去 i wish that i__ with you last night .应该用had gone,为什么也可以用coul I have been to shanghai,I__________there last month i have gone to shanghai for 2 months重点解释have gone to 后为什么可以接 (1/2)I wish I had known that Ann ___ill .I would have gone t I wish that I could have gone with you last night. could have gone 是过去完成时吗?i wish that i ______ with you last n i would have gone to shanghai yesterday,but i missed the fli I wonder where they have gone这里为什么用have.然后那个gone是过去分词么 I wish i____to colleage next year we ( )shanghai last month. I would rather have gone to the cinema last night,but I had