(1)到那时为止，我已经在北京呆了3年(2)直到那时，他对此事还一无所知 By then，I had stayed in Beijing for 3 years.He had known nothing about it until then.
英语翻译
事实上我出生在北京并且我从那时起我就住在哪里英文 事实上我出生在北京并且我从那时起我就住在哪里 In fact，I was born in Beijing and I'm from then on I live 事实上我出生在北京并且我从那时起我就住在哪里 。
