之所以⋯⋯是因为 (zhī suǒyǐ... shì yīnwèi) can be translated as “the
reason why... is because” and can be used if the speaker wishes to
state the effect before the cause. It's normally used in somewhat
formal speech.
Structure
Subj.+ 之所以 + Effect + 是因为 + Cause
Examples
他 之 所以 去 希腊 是 因为 想 进一步 了解 西方 文明。The reason he went to Greece was because he wanted to
further understand Western culture.
少数民族 之 所以 受到 人类学家 的 注意 是 因为 他们 至今 还 保留 着 许多
传统 文化。The reason minorities receive a lot of
attention from anthropologists is because they maintain most of
their traditional culture up until today.
你 之所以 能够 追求 精神 上 的 快乐 是 因为 你 已经 有 了 稳定 的 物质
基础。The reason you can pursue spiritual
happiness is because you already have a stable material
foundation.