at some time/ some of the time

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. Everyone wants to have some fun some of the time!
  2. Everyone wants to have some fun at some of the time!
  3. Everyone wants to have some fun at some time!
    Please correct the above.
    If all are OK, please explain the differences in meanings.
2

#1 and #3 are similar in meaning. “some of the time” means for some portion of the time; “at some time” means on some particular occasion(s). You can also omit “at” in #3, again with similar meaning.

#2 is incorrect.