How it works
A complete independent clause expresses a subject and a finished verb relationship. Two independent clauses need a period, semicolon, or coordinating/subordinating structure; a comma alone is not enough. A dependent clause beginning with because, although, when, or if cannot usually stand alone. Boundary control matters because readers must see where one claim ends and the next relationship begins. During revision, underline each finite verb and identify which clause it belongs to before changing punctuation.
Patterns
Coordination
Independent clause, and/but/so independent clause.
Connect equally important complete ideas while naming their relationship.
Subordination
Although/Because/When dependent clause, independent clause.
Make one idea the context, cause, time, or limitation of another.
Before and after
- Before
- The venue changed, I cannot attend the stairs-only room.
- After
- The venue changed, so I cannot attend the stairs-only room.
- Why
- So turns the comma splice into a cause-result relationship.
- Before
- Because the first shuttle arrives after orientation.
- After
- Because the first shuttle arrives after orientation, I need a later briefing.
- Why
- The dependent reason now has an independent result.
Practice
- Separate two run-ons using different methods.
- Complete three because-fragments with meaningful results.
- Audit one paragraph by marking every independent clause.
Show the answer key
- Accept period, semicolon, or accurate coordinator for each run-on.
- Every because clause must connect to a complete main idea.
- Each independent clause should have a clear subject-verb relationship.
