Question

______ many times, but he still couldn't understand it.

Having been told
He had been told
Though he had been told
Been told

Answer 1

首先，主语他和告诉
的关系是
他被告诉
，所以tell应该用被动态，所以可以排除D
其次，
因为原句中有了but
，
就不能和though合用，所以排除B
A与C，
A,现在完成时更强调已经被告诉好几次，但是他还不知道。
选A

Answer 2

1
having
been
told不是进行时，而是动词的现在分词形式，在句中作让步状语，翻译成“虽然...”
进行时的结构是be
+
doing,
是作谓语用的。
2
句子中只有一个谓语，是couldn't
understand，逗号之前不是句子，所以不存在谓语。
3
如果用he
was
told，前面必须加上although，构成状语从句。
供参考。

Answer 3

选 He had been told

He had been told many times, but he still couldn't understand it.
他被告知很多次,但他仍然不能理解它。

如果帮到你，请记得采纳，O(∩_∩)O谢谢

追问

Though he had been told呢？
Having been told 呢？

追答

都不行
注意： though 是尽管，虽然的意思，在句中做连词，表示让步，而but是但是的意思，在句中作连词，表示转折。注意：在汉语中，我们说虽然。。。但是。。。，在英语的句中，两者不能同时出现，只能用其一

追问

还有两个，拜托了！

追答

but 作连词，可以连接两个并列成分或两个并列分句 而Having been told 和Been told都是分词短语 所以不行