[译] 因为我上课迟到，老师批评了我。
[误] For I was late for class, the teacher criticized me.

[正] The teacher criticized me for I was late for class.
[注] for 和 because 一样可以表示"因为"，但不能用在句首，而 because 用在句首或句中均可，而且 for 的语气不如 because 强，不能用来回答由 why 提出的问题。