之所以
Pinyin: zhīsuǒyǐ
(after a noun N and before a predicate P) the reason why N P
Example sentence
他们之所以没有游泳，就因为天气很冷。
Tāmen zhīsuǒyǐ méiyǒu yóuyǒng, jiù yīnwèi tiānqì hěn lěng.
They didn't swim because it was cold.
What 之所以 means
之所以 (zhīsuǒyǐ) is a Chinese word meaning “(after a noun N and before a predicate P) the reason why N P”. It appears in the HSK 6 collection.
More HSK 6 words
HSK 6
岸
àn
bank; shore; beach; coast
案例
ànlì
case (of fraud, hepatitis, international cooperation etc); instance; example
按摩
ànmó
to massage; massage
暗示
ànshì
to hint; to suggest; hint; suggestion
昂贵
ángguì
expensive; costly
白白
báibái
in vain; to no purpose; for nothing; white
白领
báilǐng
white-collar; white-collar worker
摆
bǎi
to arrange; to exhibit; to move to and fro; a pendulum
摆放
bǎifàng
to set up; to arrange; to lay out
百分点
bǎifēndiǎn
percentage point
百货
bǎihuò
general merchandise
摆脱
bǎituō
to break away from; to cast off (old ideas etc); to get rid of