old variant of 以[yi3]

to think; to believe (often with the implication that the belief is mistaken – unless referring to one's own current belief)

before; formerly; previous; ago

after; later; afterwards; following; later on; in the future

and; as well as

to think; to believe (often with the implication that the belief is mistaken – unless referring to one's own current belief)

before; formerly; previous; ago

after; later; afterwards; following; later on; in the future

and; as well as

since (used after a specified time or event)

can; may; possible; able to; not bad; pretty good

therefore; as a result; so; the reason why

hard to (predict, imagine etc)

sufficient to...; so much so that; so that

(after a noun N and before a predicate P) the reason why N P; Example: 我之所以討厭他|我之所以讨厌他[wo3 zhi1 suo3 yi3 tao3 yan4 ta1] "the reason why I dislike him (is ...)"