- Two plus two equals four. Four plus four equals eight.
- My name is Helen. Her name is Samantha.
Initials and abbreviations
- M.S. Pinafore was not Her Majesty’s Ship, but rather a comic opera.
- When is it appropriate to abbreviate months, like Oct. 31?
If the abbreviation or initial comes at the end of a question or exclamation, the period may be followed by the question mark or the exclamation mark.
Acronyms (no periods)
Acronyms use the first letter of each word to create a capitalized “word” representing the organization or country or verbiage.
Technically, USA is an acronym, not an abbreviation, so it does not take periods. However, common usage sometimes inserts periods.
- NASA = National Aeronautics and Space Administration
- GED = General Educational Development
- BTW = by the way
- I don’t remember her saying, “The store closes at midnight.”
- Mother always used to remind me, “Be home before dark.”
- If I came home late, Mother would ask me where I had been.
- The Husker fan wondered what the score was. I hesitated to tell him.
The exclamation mark makes a stronger command.
- “Just sit down.”
- “Quit asking questions! Just sit down!”