如果只有would like to一般指現(xiàn)在或?qū)硐胍ィㄗ瞿呈拢?br/>但是這里是說以前（而且這件事還發(fā)生在had to...之前）would like to結(jié)構(gòu)要保留、又要表達過去,最好的辦法就是組合可表“之前”意義的完成結(jié)構(gòu)
而且是口語問答,回答作了省略,完整句是I would like to have gone to the concert.前面已經(jīng)問過是go the concert了沒必要再啰嗦一遍,但省略至多只能省略到have身上,不然完成結(jié)構(gòu)就不存在,無法體現(xiàn)“之前”了
——————————————————————————————————————————
時態(tài)比較復雜的,無法單純用過去時態(tài)的時候,經(jīng)常會組合一個完成結(jié)構(gòu)來表達之前發(fā)生的事情,如情態(tài)動詞、將來時態(tài)、不定式等有必用動原的要求.
如：I should have finished my homework before yesterday.昨天前就該完成
如果不套用完成結(jié)構(gòu)：I should finish my homework后面的時間狀語就是now,tomorrow之類的了
---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.
現(xiàn)在和你們講虛擬語氣還早了點,而且這里would like to do 也不是虛擬語氣,以后系統(tǒng)學的時候,你會發(fā)現(xiàn)更多組合的完成結(jié)構(gòu)