[ suǒyǐ ] 1.(表示因果关系)so; therefore; as a result 短语和例子 他忙得很, 所以没有来。 he was busy, therefore he couldn't come. 因为他干活儿很仔细, 所以连续六年不出废品。 because he works very carefully, he has not produced a reject in the last six years. 2.(表示""原因就在这里"") the reason why 短语和例子 所以呀, 要不然我就不来这了。 that's just the point, otherwise i wouldn't come here. 我所以对他熟悉, 是因为我和他一起工作过。 i know him well because he was formerly my fellow worker. 中国革命所以取得胜利, 主要是因为有正确理论的指导。 the reason why the chinese revolution was successful was that it was guided by a correct theory.3.(表示实在的情由或适宜的举动) 短语和例子 忘其所以 forget oneself; 他的成就使他高兴得忘乎所以。 overwhelmed by his achievements, he lost his reason.; he is carried away by his achievements