has been doing的问题,It has been a long time coming,but tonight,because of what we did on this date in this election at this defining moment,change has come to America .开头it's been a long time coming 什么情况?has been doing吗?但是正确

has been doing的问题,It has been a long time coming,but tonight,because of what we did on this date in this election at this defining moment,change has come to America .开头it's been a long time coming 什么情况?has been doing吗?但是正确 has been doing 的用法看到一句话：it has been a favorite magazine sinc i was a child.has been 后面接了名词,这是属于什么时态的用法呢?是have been doing had been doing是什么语法?举个例子~有have/has been doing的说法吗? it's been.的全称是不是 it has been... has been doing have been done区别 have /has been doing 是什么句型啊做题时遇到的 i has been doing 还是i have been doing —Has Tommy finished his homework yet?—I have no idea; he ---it this morning.A.was doing B.had been doing C.has done D.did 选A 还是B 是最好的答案 have/has+been doing 与has/have+过去分词的区别 过去现在时 have /has been doing和have/ has +过去分词的区别 since从句的时态问题It is/has been +时间段+since从句中since的从句的时态 have been doing 的用法,My borhter has worked in that factory since two years ago 问：不是have been doing吗,为什么会是has worked,余很笨, has been open和has been opening有什么区别跟open有关的问题 it has been since.用法 It has been in my it is/has been= It's has been accepted it has long been assumed