it was almost 10 years__his wife and cildren joined him in the city

Question

that before when after 讲明原因 语法角度

Answer 1

选before引导时间状语从句，如果选that，比此应改为it was almost 10 years later that his……其实就是强调句的结构，按照句意空格前后是有先后顺序的，而不是在那个时间，不能选when，after不符合句意

Answer 2

before,
全句翻译：几乎过了十年他的妻子和孩子才来到这个城市陪他。

不选that的理由，想用that必须改成：it was almost 10 years later that his wife and cildren joined him in the city追问

为何不能用when 还有加了later怎额就能用that