but, so, or, and连接并列句是可以的,只是句子要符合说话的逻辑意义。
I kept on playing but then I didn't have the ball so I't see how injured he was.
我继续比赛,但当时我没拿球,所以看不到他伤的怎么样。
I have read the declarations of Mr. Ferguson, but I didn't hear them directly, so I'm not sure in what context Sir Ferguson said them.
我听说了弗格森爵士的话,不过我不是亲耳听到的,所以我不清楚弗格森爵士到底是以怎样的方式说的。
以上例句来自有道词典的网络双语例句。
可以。比如像这样的句子:I bought a cup yesterday, but it was too small for me, so I changed it for a bigger one.
不行,but跟so不能连用,分句也不行。