7.3 Punctuation And Complete Thoughts
Key Takeaways
- Punctuation should clarify sentence relationships rather than decorate a sentence.
- A complete sentence needs a subject, a verb, and a complete thought.
- Comma placement can change whether information is clear or confusing.
- The best answer should preserve the official meaning of a CJBAT-related fact.
Punctuation Shows How Ideas Fit Together
Punctuation is part of Written Expression because it helps readers understand where one idea ends and another begins. A comma, period, colon, or semicolon should make the relationship between ideas clearer. If punctuation makes the sentence harder to follow, the answer is probably weaker.
Start with complete thoughts. A complete sentence has a subject, a verb, and a complete idea. "Candidates should arrive 15 minutes before the scheduled exam" is complete. "Because candidates should arrive 15 minutes before the scheduled exam" is not complete by itself because the word "because" leaves the reader waiting for the main idea.
Run-on sentences are also a risk. Two complete thoughts cannot simply be pushed together with no punctuation. They also should not be joined by only a comma. A period, semicolon, or coordinating word may be needed, depending on the sentence.
| Problem | Example pattern | Better repair |
|---|---|---|
| Fragment | Because the candidate arrived early. | Add the missing main idea. |
| Run-on | The exam has 97 questions it lasts 1.5 hours. | Separate or properly join the thoughts. |
| Comma splice | The fee is non-refundable, it is paid at reservation. | Use a period, semicolon, or conjunction. |
| Misleading comma | Candidates, who are late lose the fee. | Place punctuation so the meaning is clear. |
Use official CJBAT facts carefully when practicing punctuation. The brief says the CJBAT has 97 questions total and 1.5 hours total. A clear sentence may say, "The CJBAT has 97 questions total, and the total testing time is 1.5 hours." That punctuation joins two related complete thoughts with a comma and "and."
A sentence can be grammatical but still awkward. For Written Expression, choose the answer that communicates the meaning efficiently. For example, "Candidates must bring two current, unexpired, signature-bearing IDs" is direct. A version with misplaced commas around "current" or "unexpired" may distract the reader or suggest a different meaning.
Colons can introduce a list, but the words before the colon should form a complete setup. "Bring these required items: two current, unexpired, signature-bearing IDs" works as a practice sentence. "Bring: two current IDs" is weaker because the colon interrupts the verb and object.
Use this punctuation checklist:
- Find each complete thought.
- Check whether two complete thoughts are joined correctly.
- Watch for fragments created by words like because, although, or when.
- Use commas to clarify, not to guess.
- Preserve official facts exactly when they appear.
- Choose the answer that is easiest to read without changing meaning.
Punctuation should support precision. The official brief includes high-stakes testing rules about IDs, fees, timing, retakes, misconduct, and results. A study sentence about those rules should not blur conditions or make the rule sound broader than it is. The clearest punctuation keeps the rule understandable without inventing a new one.
Which option is a complete sentence?
Which sentence correctly joins two complete thoughts?
What should punctuation do in a Written Expression answer?