shouldn't it be four o'clock not for o'clock...
It’s for-thirty, and I might as well get up. The last time I looked at the clock, it was four-fifteen.
The last time I looked at the clock, it was four-fifteen.
You are correct in your subject line. Four o'clock is correct. "For" is not a number.
I believe that the question of whether to spell out the words or write numerals is a question of style. Some style guides might suggest that on the hour should use o'clock, and the number should be spelled out. A formal wedding invitation will have all numbers and times spelled out: at three thirty in the afternoon. In most cases we use numerals, though, as Shawn noted.
|link comment||answered Feb 09 '13 at 09:47 Patty T Grammarly Fellow|