The concert was wonderful yesterday.didn't you go to it?
The concert was wonderful yesterday.didn't you go to it?
No.I would like to have,but I had to look after my brother.回答里为什么有have呢?
如果只有would like to一般指现在或将来想要去（做某事）
但是这里是说以前（而且这件事还发生在had to...之前）would like to结构要保留、又要表达过去,最好的办法就是组合可表“之前”意义的完成结构
而且是口语问答,回答作了省略,完整句是I would like to have gone to the concert.前面已经问过是go the concert了没必要再啰嗦一遍,但省略至多只能省略到have身上,不然完成结构就不存在,无法体现“之前”了
——————————————————————————————————————————
时态比较复杂的,无法单纯用过去时态的时候,经常会组合一个完成结构来表达之前发生的事情,如情态动词、将来时态、不定式等有必用动原的要求.
如：I should have finished my homework before yesterday.昨天前就该完成
如果不套用完成结构：I should finish my homework后面的时间状语就是now,tomorrow之类的了
---I haven't finished my homework yet.--- Oh,you should have.
---I finished my homework yesterday.--- Oh,you needn't have.
I felt very happy to have received the gift sent by you last Sunday.
现在和你们讲虚拟语气还早了点,而且这里would like to do 也不是虚拟语气,以后系统学的时候,你会发现更多组合的完成结构