Cách sử dụng
The word 'once' is often used when referring to something that happened one time in the past. For example, "I went to Paris once" means that the speaker went to Paris one time in their life. 'Once' can also be used to indicate a specific moment in the past, as in "Once upon a time" to begin a story or "Once I finish this project" to indicate a future goal. Another way to use 'once' is to mean "as soon as," such as "Once you finish your homework, you can play outside." Overall, 'once' is a versatile word that can be used to refer to a specific moment or event, a single occurrence, or a future goal.