Day's ``The Ten Commandments of Good Writing'' 1. Each pronoun should agree with their antecedent. 2. Just between you and I, case is important. 3. A preposition is a poor word to end a sentence with. 4. Verbs has to agree with their subject. 5. Don't use no double negatives 6. A writer mustn't shift your point of view. 7. When dangling, don't use participles. 8. Join clauses good, like a conjunction should. 9. Don't write run-on sentence it is difficult when you got punctuate it so it makes sense when the reader reads what you wrote. X. About sentence fragments. After Day, Robert A: ``How to Write and Publish a Scientific Paper''