Three years passed是什么意思

Three years passed是什么意思 time_(go)by,three years passed 怎么填 Three years have/has passed.有谁给个明确的答案,到底是have 还是has the story of the three little pig's has been passed down for many years意思是 only then did I realize that three years had passed我在学校学里呆了将近3年了.但是实际上还差上一个月满三年,three years had passed好呢还是three years have passed 好呢? Three years has passed since he came to China.中为什么用has不是说three years吗 Three years ____ ____ since he joined the army 填have passed ,have不对,passed对的. three years have passed since they met last time.为什么不是has passed ?表示时间的不是用单数吗? Three years -- since they came to this schoolA .have past B.has passed C .has past D .have passed three years has passed before we knew it know为什么用过去时这句话的翻译是：不知不觉过了3年 突然疑惑了!Three years (pass)____since we met in new york.请用正确形式填空.我的答案是have passed 但是我想问一下能不能直接用passed 为什么? Three years __________ since my brother jioned the army.A.has passed B.have passed C.passed D.passes求列出详细解析,不甚感激. Three years _____(have) passed since he came here.填什么?为什么? nearly three years ( )has passed 还是 have past since i studied at this middle school three years （ ）passed,we graduation from the school.1.has 2.have three years of middle school life has passed哪里错了 he is ________here.he passed away three years ago.空白处是填no longer 还是no more Three years __(have) passed since they mat last and for time ,three years__(be)really a buy time.