A Word That Can Cause Run-Ons: Then

Many run-ons are caused by the word then. You can use then to join two sentences, but if you add it without the correct punctuation and/or joining word, the resulting sentence will be a run-on. To correct a run-on caused by the word then, you can use any of the four methods presented in this chapter.

COMMA SPLICE I grabbed the remote, then I ate my pizza.
CORRECTED image [period added]
CORRECTED image [semicolon added]
CORRECTED image [coordinating conjunction and added]
CORRECTED image [dependent word before added to make a dependent clause]