请问begun和began的用法has begun a new service请问这里用的是什么时态,为什么不能使用began呢,

请问begun和began的用法has begun a new service请问这里用的是什么时态,为什么不能使用began呢, Hardly ___ to speak when the audience interrupted hihad he begun ,has he begun ,he had begun ,he began Hurry up!The play ( ) for the minutes A has begun B had begun C has been on D began The evening party _ .You are a little late.A.just began B.just has begun C.has just begun D.has begun just now 为什么选C Hurry up!the march____for ten minutes.A has begunB has been onC had begun D began 求教 begin began bugun 的区别和各自用法是什么? hurry.up the play__ for ten minutes .hurry.up the play__ for ten minutes .A.has begun B.had begun C.has been on D.began The evening party _ . You are a little late.A. just began B. just has begun C. has just begun D. has begun just now just为什么放在has后面 the film____ for five minutes already. A began B has been on C begins D has begun说明原因 You are late．The play _____for ten minutes.A has begun B has started C began Dhas been on I wonder how long ago this radio factory-----a has begun b begins c began d has started have和has的用法 have和has的用法. has和have的用法 has和have的用法 Well begun,half done.begun的用法begun是begin的过去分词.这个用法涉及了什么语法?为什么用well搭配begun? The play may begin at any moment .It ()A has begun B won't C hasn't begun yet D began a long time ago By the time he was 15,the boy___to make a living by himselfA.would begin B.has begun C.had begun D.began