1. Comma Splice:
* Incorrect: The dog barked loudly, the cat hissed back.
* Explanation: Two independent clauses (complete sentences) are joined only by a comma, which is not enough punctuation to separate them.
* Correct: The dog barked loudly, and the cat hissed back.
* Correct: The dog barked loudly. The cat hissed back.
2. Fused Sentence:
* Incorrect: The sun was shining the birds were singing.
* Explanation: Two independent clauses are joined with no punctuation or conjunction.
* Correct: The sun was shining, and the birds were singing.
* Correct: The sun was shining. The birds were singing.
3. Lack of Conjunction:
* Incorrect: I went to the store I bought some milk.
* Explanation: Two independent clauses are joined with no punctuation or conjunction.
* Correct: I went to the store, and I bought some milk.
* Correct: I went to the store. I bought some milk.
4. Misuse of Semicolon:
* Incorrect: The sky was blue; the clouds were white.
* Explanation: A semicolon is used to separate two closely related independent clauses. Here, the sentences are not closely related enough.
* Correct: The sky was blue, and the clouds were white.
* Correct: The sky was blue; however, the clouds were white.
5. Run-on with Dependent Clause:
* Incorrect: While I was walking to school, I saw a squirrel it ran up a tree.
* Explanation: Two independent clauses are joined together without proper punctuation or conjunction.
* Correct: While I was walking to school, I saw a squirrel, and it ran up a tree.
* Correct: While I was walking to school, I saw a squirrel. It ran up a tree.
Remember: Run-on sentences can be difficult to read and understand. Be sure to use proper punctuation and conjunctions to separate your thoughts clearly.