Having been done ,done,having done

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Having been done ,done,having done
____many times,he still couldn't understand it.
A、Having been told B、Told
为什么答案是A，现在分词完成时的被动，B也可以表示完成和被动啊。
同样，还有一道题：The building____last year is a restaurant.
A、having been built B、built
这道题为什么选B呢？

Having been done 是现在分词的完成时的被动语态,用的时候常常会出现一个段时间状语.如：
Having been built for two years,the building will be used as a hospital
,done是过去分词,表示被动和完成,如
completed last month,the building will be used as a hospital
having done 是现在分词的完成时的主动形式,用的时候常常会出现一个段时间状语.如
Having worked for a long time ,the workers are all very tired.
再问： ____many times,he still couldn't understand it. A、Having been told B、Told 为什么答案是A，现在分词完成时的被动，B也可以表示完成和被动啊。同样，还有一道题：The building____last year is a restaurant. A、having been built B、built 这道题为什么选B呢？
再答： ____many times,he still couldn't understand it.句中的many times 是一个段时间状语，只能用Ahaving been told The building____last year is a restaurant句中last year 不是一个段时间状语，而是一个过去的时刻的状语，只表是过去，所以用Bbuilt 请再比较一下我前面给的例句，与你的上面两个例句并不矛盾！

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