is being repaired by my friend请问这里的by怎么解释?

The window broken by Tom is being repaired. I have to go to work by taxi because my car ___at the garage .Awill be repaired Bis repaired C is being repaired D has been repaired It is being repaired by a friend of my father's.being是什么意思, is being repaired by my friend请问这里的by怎么解释? 以下两个英语句子有什么不同?it is being repaired by a friend of my father.it is being repaired by a friend of my father's. a friend of my father's is repaireing it 如何改为被动语态?为什么是it is being repaired by a friend of my father's.其中being repaired 为什么不是is repaired 或者 是be repaired 请问这题选什么答案,英语考试.The radio ___ by my son just now.A.has been repaired B.is being repaired C.repaired D.has repai 翻译 It is being repaired by a friend of my fathers. It is being repaired by a friend of my father's 这句是什么时态 it is being repaired by fridend of my father's什么意思 It is being repaired by a friend of my father's 求翻译 请问这里的being是什么 I is being repaired by a friend of my father's 能用by my father's friend吗? 麻烦帮忙分析下语法 It is being repaired by a friend of my麻烦帮忙分析下语法It is being repaired by a friend of my father's 前面的being The instrument is being repaired by a friend of my father's.这句话为什么到过来说这是个什么句型? may I use your bike?sorry,it------ A.repaired B.has repaired C.is being repaired Dis repaired the instrument is being repaired by a friend of my father's 这句话中 有is 和being 不是就两个be动词? It is being repaired by a friend of my father's中的is being是表示正在进行中的中吗?那为什么正在进行中又用过去式repaired呢? The instrument is being repaired by a friend of my father's这句话是被动,是正在进行时的被动一般被动：is repaired正在进行时的被动：is being repaired那么是否只要是正在进行时被动语态都遵循：be+“being”+