If losses were to occur which he could repair by using his reserve fund, what assurance would he have that another loss-the same kind or different---might not occur next week, next month?

句子结构分析：

首先，这是一个虚拟条件句，从句为 if sth were to do, 主句为 sb would do, 是对将来不大可能实现的条件所做的假设，以及由此产生的疑问。

if losses were to occur 从句的主语+谓语 which he could repair by using his reserve fund 限制性定语从句修饰主语losses，what assurance 主句的宾语 would he have 主句的主语和谓语 that another loss--the same kind of different--might occure next week, next month?限制性同位语从句解释名词assurance.

译文：

如果他能用储备资金弥补的损失在将来发生了，他有什么保证下一周或下个月不会有另外的（相同的或不同的）损失发生?