现在进行时被动语态：am/is/are being +过去分词和现在分词被动语态being+过去分词 有什么区别啊

Being asked which way to go ,he said he had no idea.Being 是不可以少的.前一句是ing形式引导伴随状语.若没有Being,句子就应该变为“When(he was 可以省略)asked which way to go,he...”.
Being tied to the tree,he cannot escape.(此处being 做原因状语.)= Because he is tied to ...
现在进行时前面有 am /is/ are 是be 动词,being done是整个充当动词的,因动作是被动的,而am /is/ are 后面要加ing形式,因此只能be done 的 be 做ing 形式.
由此可见,being done 做状语,而am /is/ are being done 就是动作现在进行,而动作又是被动的.是谓语结构.
希望我解释通了,哈哈.

在句子中所做的成分是不同的。如the homework is being done.这里的现在进行时被动语态是做这个句子的谓语。但是如Being asked which way to go ,he said he had no idea.这里的现在分词被动语态是做这个句子的状语，去掉这一部分不影响句子的完整性，就是说he said he had no idea也是一个句子，可以不用状语。但是前面一...

这个问题好像没问清楚，两个没区别啊
不过doing 有两个名称，一个叫现在分词 用于进行时，
还有一个叫动名词 非谓语，可以做句子的很多成分