There are two main types of quotation marks:
* Double quotation marks (" ") are the most common type used in English.
* Single quotation marks (' ') are often used within double quotation marks to indicate a quotation within a quotation.
For example:
* "Hello," she said.
* He asked, "Did you say, 'I'm going to the store'?"
It's important to note that different languages may use different punctuation marks for spoken words.