Is is grammatically right to leave out the definite article in the following sentence?
what would change if the word about were not added?
Is is grammatically right to leave out the definite article in the following sentence?
what would change if the word about were not added?
As a native speaker of American English, I'd say
... at about age thirty
or
... at about the age of thirty
As a native speaker of British English, I would use either "around aged 30", or "around the age of 30" instead of "at about age 30".
The related things to know here are:
I would never say "at about the age 30" or "at about age 30", as it seems grammatically confused. Instead, I might say "At about aged 30", or "at about the age of 30", because they are grammatically correct. I would normally replace 'at about' with 'around' though.
EDIT. Without 'about', the correct phrases would be "at aged 30", or "at the age of 30".
EDIT EDIT. I would use "around aged 30", even if we were talking in present simple tense.