IFS

例句：

1. 1. I have to file my taxes separately.
   我必须单独报税。
2. 2. The information is essential for the decision-making process.
   这些信息对于决策过程至关重要。
3. 3. If you find any errors, please inform me immediately.
   如果你发现任何错误，请立即通知我。