Which should you use, should have or should of? The preposition of may not be used with the modal auxiliary verb should to mean should have.
| Incorrect: |
This should of been clear from the beginning.
|
| Correct: |
This should have been clear from the beginning.
|
| Incorrect: |
You should of learned your lesson.
|
| Correct: |
You should have learned your lesson.
|
