1650s, from so + past participle of call (v.). As a "sneer word" (1980, Safire, who lumps it with self-proclaimed, would-be, and purported), from 1837.
权威例句
1. Look, you've typed " do " as'so " , and made nonsense of the whole sentence.
瞧, 你把do打成了so, 这样一来句子就不通了.
2. Failure is never quite so frightening as regret do.
比失败更令人恐惧的是懊悔。
3. He plays some passages so slowly that they become lugubrious.
有些段落他演奏得异常徐缓,听上去有些忧伤。
4. Fresh fruits and vegetables are important and so is bran.
新鲜的水果和蔬菜很重要,麦麸也是。
5. He does deserve some good luck after so much wretchedness.