​[The excerpt below is from Grammarly.com. Click on the link at the end to read more on this topic.]

"What is a run-on sentence? Run-on sentences, also known as fused sentences, occur when two complete sentences are squashed together without using a coordinating conjunction or proper punctuation, such as a period or a semicolon.  Run-on sentences can be short or long. A long sentence isn’t necessarily a run-on sentence. "



To continue learning more about this topic and how to make corrections, click on the following link:  RUN-ON SENTENCES 

To practice finding and identifying run-on sentences in your writing, click on these links: 

• Repairing Run-On Sentences
• Run-On Practice Exercises
• Run-On Sentences Quiz ​

Want to improve your writing? Well, there are some common errors that you might want to look for as your revise and edit your writing. Here's the first one:  

Error #1: Run-on Sentence or Comma Splice
A run-on sentence is a sentence that joins two independent clauses without punctuation or the appropriate conjunction. A comma splice is similar to a run-on sentence, but it uses a comma to join two clauses that have no appropriate conjunction.
Fixing a run-on sentence or a comma splice can be accomplished in one of five different ways:

• Separate the clauses into two sentences.
• Replace the comma with a semi-colon.
• Replace the comma with a coordinating conjunction--and, but, for, yet, nor, so, or.
• Replace the comma with a subordinating conjunction--after, although, before, unless, as, because, even though, if, since, until, when, while.
• Replace the comma with a semi-colon and transitional word--however, moreover, on the other hand, nevertheless, instead, also, therefore, consequently, otherwise, as a result.

For example:

• Incorrect: Rachel is very smart, she began reading when she was three years old.
• Correct: Rachel is very smart. She began reading when she was three years old.
• Correct: Rachel is very smart; she began reading when she was three years old.
• Correct: Rachel is very smart, for she began reading when she was three years old.
• Correct: Because Rachel is very smart, she began reading when she was three years old.
• Correct: Rachel is very smart; as a result, she began reading when she was three years old.

Read more at 18 Most Common Grammar Mistakes 

Last week, we looked at how to recognize fragments and how to fix them. This week, we will practice correcting run-on sentences (sometimes called fused sentences) and comma splice errors. 

Here are some exercises to help you:

• Practice 1
• Practice 2
• Practice 3

Understanding how sentences are put together will help us avoid making some basic mistakes in our writing. 
The first few exercises are an opportunity for you to practice identifying sentence types. We have identified three types so far: simple, compound, and complex. 

There is one more type of sentence that you should be familiar with. 

It is called a compound-complex sentence. Very simply, this type of sentence has at least two independent clauses (compound) and at least one dependent clause (complex). 

Click here to review the four sentence types. 

Here are some more online exercises to help you:

• Identifying Sentence Types Practice 1
• Identifying Sentence Types Practice 2
• Identifying Sentence Types Practice 3
• Fragment Practice 1
• Fragment Practice 2
• Prepositions Practice 1
• Prepositions Practice 2
• Prepositions Practice 3
For this final exercise, you will find a long list of prepositions followed by many opportunities to practice using prepositions. Read over the list of prepositions and then do some of the practice exercises.