之所以...是因为(zhīsuǒyǐ...shì yīnwèi)
The Reason Why...Is Because
Structure Pattern
Explanation
之所以...是因为 puts the RESULT first and the REASON second — the opposite of 因为...所以. This structure emphasizes the cause and is more formal and literary. Think of it as "The reason [result] is because [cause]."
Example Sentences
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Tā zhīsuǒyǐ chénggōng, shì yīnwèi tā fēicháng nǔlì.
The reason he succeeded is because he worked very hard.
Wǒ zhīsuǒyǐ xué Zhōngwén, shì yīnwèi wǒ xǐhuān Zhōngguó wénhuà.
The reason I study Chinese is because I like Chinese culture.
Zhīsuǒyǐ chídào, shì yīnwèi dǔchē le.
The reason for being late is because of traffic.
Common Mistakes
Common Mistake
之所以他努力工作是因为他成功了。
Correct Usage
他之所以成功是因为他努力工作。
The structure "之所以...是因为" requires the *result* to follow "之所以" and the *reason* to follow "是因为". The incorrect sentence reverses these, stating that success is the reason for hard work, which is illogical and flips the intended cause and effect.
Related Grammar Points
Master 之所以...是因为
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