grammar - omission of 'of/for'


I have seen people say


'I am your age' instead of saying 'I am of your age'. Similarly, a sentence like 'you have done this your whole life' instead of 'you have done this for your whole life'. My question is: why for/of is omitted? Any gramatical reason?


Thanks in anticipation




Comments

Popular posts from this blog

etymology - Origin of "s--t eating grin"

First floor vs ground floor, usage origin

usage - "there doesn't seem" vs. "there don't seem"

pronunciation - Where does the intrusive R come from in “warsh”?

Abbreviation of "Street"

etymology - Since when has "a hot minute" meant a long time?

meaning - What is synonyme of "scale"?