once I have gone,there is no retruning甚么意思

once I have gone,there is no retruning甚么意思 ---I have been to Hangzhou once(需解释) ---when____you_____there?A.did go B.have gone C.have been----I have been to Hangzhou once(需解释) ----when____you_____there?A.did,go B.have,gone C.have,been I would have gone to the concert,if I time Not once since my son went to school———— traveling with him.A had I gone B have I gone C I have gone D I had gone选B 为什么 how often have you gone horseback riding?who can translate it?it's better to explain in detail.and have you ever fallen off one?but i came close once.what is the meaning of the one and came close I have gone to the supermarket.Is this correct? 翻译 i have never got the third place even once 改句子（英语题目）1：We have a class meeting once a week .对划线句提问--once week2:I get up early in the morning in the past .改为同义句3:He has been there for two weeks .改为同义句4:My classmated have already gone to the mu Where is Mary?She isn't here.I think she_____A.may have gone home B.must have gone home C.might have gone home D.All the above What do you think of Huangshan Mountain?--It’s very attractive!I ________ there once,but I wanWhat do you think of Huangshan Mountain?--It’s very attractive!I ________ there once,but I want to go there ________ second time.A.went; the B.have gone where have you__,kate?I've __ to the bank.a.gone,gone b.been,been c.gone,been d.been,gone -Have you ever ____ to the Great wall?-Yes,I have.I _____ it twice last year.A.been;have toB.gone;visitedC.been;visitedD.gone;have visited __How many times have you been to the Great Wall?__Only once.I__[went/have gone/have been] there last year. Where have you ---- ,Mike?I have ---- to the library with my friends.A been;gone Bgone;been C ben; been D gone;gone I have no idea where the girl could have gone to.为什么不可以+to? I am gone跟I have gone有什么分别? I has gone 正解还是I have gone 正解? Mike has gone to the bookshop .I have to wait for him.has gone to 能否用was in?为什么?