Errors in language use Proper use of grammar may save someone's life. Error #1: Run-on Sentence or Comma Splice A run-on sentence is a sentence that joins two independent clauses without punctuation or the appropriate conjunction. A comma splice is similar to a run-on sentence, but it uses a comma to join two clauses that have no appropriate conjunction. Fixing a run-on sentence or a comma splice can be accomplished in one of five different ways: Separate the clauses into two sentences. Replace the comma with a semi-colon. Replace the comma with a coordinating conjunction--and, but, for, yet, nor, so. Replace the comma with a subordinating conjunction--after, although, before, unless, as, because, even though, if, since, until, when, while. Replace the comma with a semi-colon and transitional word--however, moreover, on the other hand, nevertheless, instead, also, therefore, consequently, otherwise, as a result. For example: Incorrect: Rachel is very smart, she began r...