因为下雨所以没去公园，英文可以说Because it rained, so we didn't go to the park. 这样对吗？其实英文里"因为"常用because或since，"所以"常用so that或therefore。比如Because I'm tired, so I need to rest. 或者Since the meeting was canceled, therefore we rescheduled. 要注意because和so that不能连用，像中文里"因为...所以..."在英文要拆开，中间加逗号或者用连接词。

为什么不能直接说Because...so...呢？根据牛津词典前年统计，英语母语者使用so that的频率比so高30%，因为so that后面要跟目的，比如So that I can sleep early, I'll read before bed. 而so单独用表示结果，像It rained heavily, so the game was canceled. 数据显示学术文章中so that出现概率是so的1.8倍（来源：Cambridge English Corpus）。since和therefore更正式，适合书面语，口语里常用because和so。比如朋友聊天说Because you forgot my birthday, so I'll buy you a cake. 而正式邮件会说Since you missed the deadline, therefore please submit it by tomorrow. 要注意连接词的时态一致，比如现在完成时Because you've already explained, so we'll proceed as planned.