Question

He has been joined the army for five years 这个地方的has been done 不是被动 该怎样理解呢？

Answer 1

has been done不是被动，是现在完成进行时，表示动作已经发生，现在仍然持续，或对现在有影响，这句话的意思是:他参军已经5年了，现在还可能再参军

Answer 2

中国句子不正确。join是瞬间性动词，不能用于完成时。如果你想表达“他参军五年了”可以这样说：
1.He joined the army five years ago.
2.It is five years since he joined the army.
3.He has been in the army for five years.

Answer 3

这句话不正确吧。join是瞬间动词，不能用作完成时
应该是：He has been in the army for five years

Answer 4

这个句子应该不正确的，join 是瞬间动词，不能与for five years 连用的