同学你好，该知识点来自沪江网校《BEC商务英语初、中、高级连读【随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好
in the event of是一个固定结构哦，意思为“如果...；万一....”。例如：
1. In the event of difficulties, please do not hesitate to contact our Customer Service Department
如果遇到困难，请尽管和我们的客户服务部联系。
2.The government of this country gave warning that she could not sit idly by in the event of war.
该国政府发出警告如果战争爆发，她将不会置之不理。
3.In the event of fire, ring the alarm bell.
如果着火，就按警铃。
祝学习愉快！