5) and有时可译成“而” ， 这时不用but .
I went home and she stayed at the station. I am a teacher and she is a student.
②not only…but (also) 不但…而且 She plays not only the piano, but (also) the guitar.
注意：not only… but also 关联两个分句时，一个分句因有否定词not 而必须倒装。
Not only does he like reading stories, but also he can even write some.
③but : 连接意义相反的短语或句子 He is very young but he knows a lot .
1) 用在某些否定词后，表示“只”（前有 do 后无to ，前无do 后有to ）
She knows no one but you. He did nothing but sit there thinking.
He had no choice but to lie down to sleep.
2) 表示“除了” Who but a fool would do such a thing? Everybody is here but Paul.
3) I’m sorry but… ...
注：but表示转折，while表示对比。Some people love cats, while others hate them.
④ however : 可放句末，句首或用逗号隔开。
⑤ yet作副词用，用于否定句表示“还”；用于疑问句表示“已经”；作连词表示“但是，却”。
I haven’t enough data yet . Has he come yet? I have failed, yet I shall try again.
⑥ while 1) 表对比, “而” Tom is singing while Mary is dancing .
2）引导让步状语从句，“虽然” While almost everybody knows him , nobody likes him .
3) 引导时间状语从句，主句动作与从句动作同时发生，从句必须用延续性动词。
She listened while he read.
⑦ or “或者，还是” Would you like coffee or tea? The sea can be blue or green or grey.
“否则” （见and 用法）
⑧ rather than “…而不是…” It was what he meant rather than what he said. 这是他的原意而不是他的原话。
补充： “宁愿…而不愿…” prefer to do sth. rather than do sth./ prefer doing sth. rather than doing sth.
or rather “更确切的说”
I prefer to go to school rather than stay at home. 我宁愿上学而不愿留在家。
He preferred doing something to doing nothing. 他宁愿做事不愿什么也不干。
I prefer beef rather than pork. 我宁愿吃牛肉也不吃猪肉。
He played the computer game till late last night, or rather, early this morning.昨天他玩电脑游戏到深夜,或者跟确切地说,到今天凌晨.