- I have lived here all my life.
- I have lived here for all my life.
Yes, 1 is perfectly 'standard' English, but I wonder why one cannot add for to 1 before 'all my life'?
Is there a grammatical rule governing this matter? If so, can anybody explain such rule?
I'm asking because in my language, as far as I know, both 1 and 2 are acceptable, with and without for (per).