r. (used to introduce a logical conclusion) from that fact or reason or as a result
adv. 因此, 所以
1. She studied hard for the exam; therefore, she passed with flying colors.
她为考试努力学习，因此她顺利通过了考试。
2. It was raining heavily; therefore, the match was postponed.
天气下大雨，因此比赛被推迟了。
3. He forgot his wallet at home; therefore, he couldn't buy lunch.
他把钱包忘在家里，因此他无法买午餐。