Locate the main subject and verb
Find the person or thing the main clause is about and the verb that makes a claim about it. In “The gate stuck,” gate and stuck form a complete clause. In “because the gate stuck,” the same subject and verb remain, but because creates an expectation that the reader will be told what happened as a result.
Choose the relationship as well as the boundary
Where two related clauses can stand alone, a period or a correctly used semicolon can mark the boundary. A coordinating conjunction can make the relationship explicit. A dependent opening needs a main clause. Pick a repair that both gives each clause the right support and preserves the intended relationship.
Worked example: the workshop gate
Read “The crew used the east entrance. Because the west gate stuck.” Keep the cause and write “The crew used the east entrance because the west gate stuck.” A rewrite beginning “Because the crew used the east entrance” can be grammatically correct, but it reverses the explanation. When you read a suggested repair, ask which action now explains which.
Check who is doing the opening action
In “Checking the hinges, the gate began to wobble,” the opening phrase leaves the checker unnamed. The gate is the main subject, but gates do not check hinges. One repair is “While Alia checked the hinges, the gate began to wobble.” Here the introductory clause explicitly names Alia, so the main subject can remain the gate.
Transfer check: the film screening
A notice says “Although the screen flickered. The audience could still see the subtitles.” Join the dependent idea to the main thought. “Although the screen flickered, the audience could still see the subtitles” keeps the contrast. Check that the main clause remains complete if you momentarily read it by itself.
Try it, then explain it.
Complete a short set without looking at the example. After each answer, explain which evidence or rule supports your decision and why the alternatives do not fit.
Sources & authorship
Original OpenExam explanations and examples. References support the concepts; they are not the source of copied questions. Independent educator review is pending.
Purdue OWL: Independent and Dependent ClausesPurdue OWL: Run-ons, Comma Splices, and Fused SentencesPurdue OWL: Dangling Modifiers