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Run-On Sentences

Run-on sentences occur when writers try to combine more than one idea into a single sentence. They cause confusion because readers are not sure when one idea ends and the next one begins. Read our entry and test your knowledge with our quiz!


Capitalization involves using a capital letter for the first letter of certain words. There are several rules for when to capitalize a word.

1. Capitalize the first word of a sentence.

Example: Late last night, I decided to watch TV.

2. Capitalize the first word of a quoted sentence.

Example: She said, “Don’t forget to pick up milk from the grocery store.”

3. Capitalize a proper noun (a title or name).

Example: I want to visit the Grand Canyon.

4. Capitalize a person’s title when it precedes their name.

Example: Jack saw President Obama speak at the ceremony.

5. In a title, capitalize important words and the first and last words.

Example: The teacher read One Flew Over the Cuckoo’s Nest to the class.

6. Always capitalize the word “I.”

Example: She never received the gift I bought her.

7. Capitalize each letter in an acronym. An acronym is a way to shorten the name of an organization, law, or term by taking the first letter of each word in the term--Federal Bureau of Investigation becomes the FBI.

Example: My cousin is wanted by the FBI, the DEA, and the ATF.