（一）表示语义引申
1.and
Justice is on your side，and justice will triumph over injustice.
正义在你们一边，而正义是会战胜非正义的。
2.neither…nor
She could neither speak the language nor write it.
这种语言她既不会说，也不会写。
3.both…and
A man should have both courage and perseverance.
一个人既要有勇气又要有毅力。
4.not only…but also
We should not only be bold，but also be cautious.
我们不仅要大胆，而且要谨慎。
5.as well as
I have read one of his novels as well as a few of his plays.
我读过他的一本小说和几个剧本。
（二）表示选择
1.or
You may do it yourself，or ask someone else to do it.
你可以自己做或者让别人做。
2.either…or
I left it either on the table or in the drawer.
我不是把它放在桌子上了，就是放在抽屉里了。
（三）表示转折或对比
1.but
He tried hard but he was unsuccessful.他做了很大努力但没有成功。
2.yet
The car was old，yet it was in excellent condition.
这辆车子很旧，但仍处于良好的状态。
3.however
She felt ill.She went to work，however，and tried to concentrate.
她病了。然而她照旧去上班，并且尽力集中精神工作。
4.nevertheless
I don’t know anything against that man，nevertheless I don’t trust him.
我对那个人没有什么不良的看法，但我不能信赖他。
（四）表示因果关系
1.for
You’d better put on your sweater，for it’s rather cold outside.
你最好把毛衣穿上，外边相当冷。
2.so
My sister is expecting me，so I must be off now.
姐姐在等我，因此我得走了。
3.therefore
You are right，therefore we should support you.
你是对的，所以我们应当支持你。