therefore是什么意思(therefore后面加逗号吗)

Therefore是英语中一个常用的连词，通常用来连接两个句子或描述，表示因果关系、总结、推断或综合的意思。在句子中，出现therefore往往意味着前面所提到的情况或论点已经得出结论，以此为基础继续描述下面的话题。

详细地说，因为Therefore常常作为一种因果关系的连接，所以它往往用来指明因为前面某种情况、行为或假设而导致的结果。例如，以下是一些用来说明因果关系的句子：

- I forgot my key， therefore I couldn't get into the house.

- He skipped class every week， therefore he failed the course.

- The company invested heavily in research and development， therefore it was able to launch a successful product.

因为Therefore还可以表示总结、推断和综合，所以它也可以用来连接在语境中出现的一系列观点或细节，从而构成一个完整的论点或结论。例如:

- The evidence suggests that the culprit was someone with a motive and opportunity. Therefore， the prime suspect is the victim's business partner.

- The data shows that the number of accidents in the city has decreased since the implementation of the new traffic regulations. Therefore， it can be concluded that the regulations have been effective.

因此，何时使用Therefore也要根据语境而定。请注意，某些表达方式可能会用Therefore作为开头，但是这样做显得过于正式或书面。 在口语或日常书面交流中，可用alternatives，如So或因此来表示相同的意思。