某人从2010年1月1日起开始“三天打鱼两天晒网”，问这个人在以后的某一天中是“打鱼”还是“晒网”。　根据题意可以将解题过程分为三步：
1)计算从2010年1月1日开始至指定日期共有多少天；
2)由于“打鱼”和“晒网”的周期为5天，所以将计算出的天数用5去除；
3)根据余数判断他是在“打鱼”还是在“晒网”；
　　若　余数为1，2，3，则他是在“打鱼”
　　否则　是在“晒网”(Someone since January 1, 2010 began "three days fishing, two days to bask in the net", ask this person in the next day is "fishing" or "drying nets"". According to the problem solving process can be divided into three steps:
1) how many days will be counted from January 1, 2010 until the appointed date?;
2) because the period of fishing and drying the net is 5 days, the number of days calculated is removed by 5;
3) according to the remainder, is he fishing or in the sun?";
If the remainder is 1, 2, 3, he is fishing"
Otherwise it's in the sun")