It was late, so we went home. 天晚了, 所以我們就回家去了.
但是不能說
Because it was late, so we went home
So we went home,it was late.
He was sick, so they were quiet. 他病了, 所以他們 很安靜.
同理,也不能說
Because he was sick, so they were quiet.
So they were quiet he was sick.
二、在下面的兩種從句中,so 是從屬連詞
1、和情態(tài)動詞 can/could 或 may/might 連用,引導(dǎo)目的狀語,等于so that 的省略,表示“為的是/以便”,如：
Be quiet so he can sleep. 肅靜些好使他能睡覺.
I stayed so I could see you. 我留下來以便能見到你.
2、引導(dǎo)條件狀語從句,等于so long as 的省略,表示“只要”,如：
So it is done, it matters not how. 只要成功,怎么辦都行.
So I live, I must study. 只要還活著,我就要學習.
你好，今天才看到你的回答，我是想問So作并列連詞表因果，與So作從屬連詞引導(dǎo)結(jié)果狀語從句的區(qū)別
so 用作連詞的意思是“其結(jié)果是”。我們常把它翻譯為“因此/所以”。前面已經(jīng)說過，so 在表示結(jié)果時“是個臨界連詞。從結(jié)構(gòu)上看，它引導(dǎo)的似乎結(jié)果狀語從句，很像從屬連詞；從意思上看，它不能與另一個從屬連詞 because 在一起使用，而且也不能置于主句之前，因此又像是并列連詞?！?/p>
其實，不管是把它看作是從屬連詞還是并列連詞，在意思上沒有區(qū)別。比如下面的句子，有的語法學家認為 so 前后連接的兩個分句并列句，理由是它不能與另一個從屬連詞 because 在一起使用，而且也不能置于第一個句子之前。也有的語法學家，理由是 so 本身是引導(dǎo)結(jié)果從句 so that 的省略：
It was late, so we went home. 天晚了, 所以我們就回家去了。
也可以說 It was late, so that we went home.
He was sick, so they were quiet. 他病了, 所以他們很安靜。
也可以說 He was sick, so that they were quiet.
Be quiet so he can sleep. 肅靜些好使他能睡覺。
也可以說Be quiet so that he can sleep.