conj. By or for the cause that; on this account that; for the
reason that.
conj. In order that; that.
conj. 因为
1. I stayed home because it was raining.
我待在家里，因为在下雨。
2. She is happy because she passed the exam.
她很高兴，因为她通过了考试。
3. We went to the park because it was a sunny day.
我们去了公园，因为今天天气晴朗。