Cách sử dụng
"When we say 'it's not somebody's day', we mean that things are not going well for that person. For example, if someone spills their coffee, misses their bus, and then forgets their phone at home, we can say that it's not their day. It's a way to express that they are having a bad day and that things are not going as planned. We might use this expression to show sympathy and to understand that everyone has bad days sometimes."