Question

Everything he （had been taken） away from him before he returned to his hometown麻烦讲一讲.对吗

Answer 1

错了
应该是Everything he had
had been taken away from him .....

Everything (he had), he had 充当的定语从句修饰everything，他所拥有的所有的东西。
我第二行写的 had been taken 是因为在before 前面并且before后的returned是过去式，这个需要用过去完成时，而且是被动语态。
故而括号内的应该是 had had been taken

此外，本句话的意思是：
在他回家之前，所有的东西都被剥夺掉了（类似的意思嘛）。

Answer 2

做这种题先要读懂意思 这句话是说 在他离开前本应该回到家乡 所以本应该 就是 should have done 你那 had been taken 是已经离开了 走都走了还怎么回家乡？

Answer 3

had been taken改为had wouldhave been taken