You have done this,it cannot be undone.那位高手教教我?

what have you done this 英文句子 I could not have done this without you为什么要+have?和I could not done this without you有什分别? ---Good morning,can i help you?---I'd likt you to have this package____,madam.应该用have sth.done 还是 have sth.to be done Have you read this book?Yes,I _it three hours agoA.have done B.have read C.readed D.did you mean i have done well? For you,I would have done whateve I have done this job.这句里 have done 是完成时态,have叫什么来着?助动词? Forget it,I can't have done like this again.I dare not love you again.谁告我啊 Have you done any work in this field?翻译! I have done read this book before是什么意思 What Have I Done To Deserve This 歌词 that is all things that I have done this week what did you have done this afternoon?和 what have you done at this afternoon?有什么区别? Thank you.I know what I should have done Have you done it yet?3问3答 I have‘t done it yet.I’ve already done it.【yes,I have done it】现在完成时句 _______,I would have not done this kind of foolish thing yesterdayA.Were I you B.I were you C.If I was you D.If I had been you 是不是主句看见 would have done 从句就选 had done I have done so. -Have you finished the report?-No.I ____ it all this week.A.will do B.had done C.have done.D.have been doing答案是D,为什么?