в состав подлежащего может входить МЕСТО

[1way_to_english]

Comments

[yasenp]

This boy hated his father for he was not rich, until he discovered/unveiled his secret.

[1way_to_english]

предлог + придаточное предложение с that - так не годится

[yasenp]

Не вижу там that, но вот другой вариант, звучит получше:
This boy hated his father for being not rich, until he discovered/unveiled his secret.

[1way_to_english]

that - подразумевается.
второй вариант - намного лучше.

[ext_2696553]

This boy had hated his father for being poor until he found father's secret.

[1way_to_english]

верно, но вы немного облегчили себе задачу, убрав НЕ в английском переводе.

[ext_2696553]

Может такой вариант?
This boy hated his father for what he wasn't rich until he found his secret.
Или:
This boy hated his father for what he wasn't rich until founding his secret.