English Grammar for the Utterly Confused - Laurie Rozakis 2003
Most Common Proofreading Errors
Chapter 6 The 25 Most Common Usage Problems
Part 2 Usage and Abusage
25. Missing words
Incorrect: Proofread carefully to see if you have any words out.
Correct: Proofread carefully to see if you have left any words out.
This is a simple rule, but many people run out of time before they can proofread a document. Always make the time to proofread your writing. And try to let your writing sit and “cool off” for a few hours. The errors will become much more obvious and easier to isolate.