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.