therefore用法

　　当therefore在整句中时，一般不放句末，放在句首后要有逗号，放在句中时前后都要有逗号。

　　He was the only candidate; therefore, he was elected.

　　他是唯一的候选人，因此，他当选了。

　　Many fast food restaurant ,therefore,have red furniture or walls.

　　因此，许多快餐店都有红色的家具或墙壁。

　　当therefore用在分句中时，即一个句子一部分表示原因一部分表示结果。

　　这时一般词前要用分号，其后用不用逗号无所谓。若第二个分句前是逗号或无符号，则要注意therefore是副词，和so不一样，要保持句子完整，应用and therefore。

　　I had a headache，therefore I could not go to your party.

　　我头痛，所以不能去参加你的聚会。

　　I was ill, and therefore I could not come.

　　我病了,所以没能来。

　　We do not have enough money. Therefore we can not afford to buy the new car.

　　我们的钱不够,因此买不成这辆新车。