I have promised to have the work finished by the end of this week翻译：我已经答应 本周末完成这项工作了我怎么觉得这句 是 一个现在完成时嵌套在另一个现在完成时里?解释解释这个句子~还有 have the work

I have promised,can no longer to tears.For I--him a favor several days ago A promised to do B promised to have done 说理由 并翻译 I will always cherish what I have promised to you的意思 )My parents have promised to come to see me before I _____for Africa为什么选 I believed,because you have promised me 选择：My parents have promised to come to see me before I——(leave)for Africa.填空 I _____ to London but I was promised to visit it next year.A：have never been B：have never gone C：was never D：never went I _____ to London but I was promised to visit it next yeat.A:have never been B:have never gone C:was never D:never went I _____ to London but I was promised to visit it next yeatA:have never been B:have never gone C:was never D:never went My parents have promised to come to see me before I -----for Africa.A.have left B.leave C .left D.will leave My parents have promised to come to see me before I _________ for Africa.A.have left B.leave C.left D.will leave 英语：my parents have promised to come to see me before i（）for AfricaA have left B leave C left D wll leave选哪个 为什么 I will try to do what I promised是什么意思 -My friend ,Tom ,promised to come to see you.-But he( ) .I have been alone.A .doesn`t B won`t C didn`t D hasn`t --Henry promised to come to see you today.--But he ____.I have been alone.A.hasn't B doesn't C didn't D .hadn't 英语翻译Something promised,also will repay; have a period of about,time is not easy.To you,to let you know that I still love you... I ________ him a favor several days ago promised to do 还是 promised to have done 为什么这道题目找了很多资料,但是都不是特别权威的答案,我是倾向于promised to do,引文就是一般过去时,过去答应的,三天前这 分析英语语法结构请分析一下下列句子的详细结构成分（主谓宾定状补等）I have promised to help my sister move her house this weekend.