Cách sử dụng
The expression "up before somebody/something" means to wake up earlier than someone or something else. For example, if you have to catch an early flight, you might say, "I need to be up before the sun rises." Or if you want to get ready for school before your siblings, you might say, "I need to be up before my sister wakes up." The expression is used to indicate that someone is waking up early in order to get something done before others do.