Revelle Humanities Grammar Handbook
6 Sentence fragments
7 Run-on sentences
8 Verb agreement
13 Passive voice
15 ESL
17 Misplaced modifiers
18 Pronoun reference
20a Comparisons
21 Parallel construction
23 Commas
23d Sexist language
25/6 Semicolons & colons
29 Ellipsis
31 Brackets
35 Apostrophes
36 Abbreviations
37 Underlining
39 Numbers
41b Slang
41e Jargon
41f Pretentious language
42c Idioms
42e Clichés
43a Fluff

7 Run-on sentences
Along with their relatives, comma splices, run-on sentences are the result of incorrect use of coordinating conjunctions and punctuation marks. Run-on sentences usually combine two separate thoughts in one sentence. Separate them with the appropriate punctuation, using one of the following options:

Consult the Brief English Handbook for more instances of run-on sentences, and when to use colons, semicolons and periods.

See also section 23 on when and how to use commas.