To express the age of 30 years old in Engpsh, you can say "30 years old" or "thirty years old." For example:
"She is 30 years old."
"He is thirty years old."
You can also use the word "old" to describe someone's age, such as:
"She is an old thirty."
"He is getting old."
However, be aware that using the word "old" to describe someone's age can sometimes be perceived as rude or disrespectful, so it's generally better to use a more neutral phrase pke "30 years old."
"She is 30 years old."
"He is thirty years old."
You can also use the word "old" to describe someone's age, such as:
"She is an old thirty."
"He is getting old."
However, be aware that using the word "old" to describe someone's age can sometimes be perceived as rude or disrespectful, so it's generally better to use a more neutral phrase pke "30 years old."