The two types of run - on sentences?

There isn't a strict classification of "two types" of run-on sentences. However, we can understand them as two main categories based on the way they are formed:

1. Sentences joined without any punctuation or conjunction:

* Example: The cat ran across the street it was chasing a mouse.

Here, two complete sentences are mashed together without proper punctuation or a connecting word.

2. Sentences joined with only a comma:

* Example: The dog barked loudly, the cat hissed back.

This type of sentence is called a comma splice, and it happens when only a comma is used to connect two independent clauses. While commas are helpful in other situations, they are not enough to separate two complete sentences.

Note:

* It's crucial to remember that there are correct uses of commas in sentences, such as when using a coordinating conjunction (like "and," "but," "or") or introducing a dependent clause.

* Run-on sentences are grammatically incorrect and should be corrected to improve clarity and readability.