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

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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

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
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

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
首先,改成被动语态是：It is repaired by a friend of my father's
其次,改成现在进行时,需要把动词变成ing形式,前面加上be动词,那么句中的动词实际就是is,把它变成ing形式就成了being,前面再加上be动词就成了is being,所以整句就成了：it is being repaired by a friend of my father's.

原句是现在进行时，更改后还必须是现在进行时，所以被动是BE+BEING，后面的BE是原形

is being repaired强调了正在被修理。
is repaired只是阐述了一个客观事实。时间概念上就没那么确定。
而be repaired。。
这个就是am/is/are being done啊。
所以be be repaired是错的。

原句是is repaireing，强调现在进行时，所以改被动语态后也要体现出进行时，所以is repaired 不行。至于be repaired 呢，前面是is，且是现在进行时，所以动词要加ing(be动词也是动词的一种）

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