"How old is...?" is the English phrase used to ask about a person's age. It is a simple and direct question that can be used in various contexts, such as asking for someone's age in a conversation or in a formal setting like a job interview.
To answer this question, you would need to know the exact name of the person being asked about. For example, if you were asked "How old is John?", you would reply with "John is 30 years old".
It's important to note that when asking about someone's age, it's considered impolite to guess or make an educated guess without being directly asked. So, always ask for their age if you need to know.
In conclusion, "How old is...?" is a simple yet effective way to ask about a person's age in English. Just remember to always ask for their age if you need to know, and never make an educated guess without being asked.
