原来如此。一经你解释我就明白了。

　　[误] So it is. I understand soon after your explanation.

　　[正] So that's how it is. I understand soon after your explanation.

　　注：So it is 的意思是“的确如此”，它是用来表示对对方观点的赞同的。例如：

　　A: It is a fine day today!

　　B: So it is.

　　而在表达恍然大悟时，英文要用 So that's how it is 或 So that explains it, 或更简单地道的说法

　　Oh, I see.