1. "Such as" introducing a list:
* Example: "I enjoy many fruits, such as apples, oranges, and bananas."
* The comma after "such as" separates the introductory phrase from the list.
2. "Such as" not introducing a list:
* Example: "This is such as a beautiful day."
* No comma is needed because "such as" is acting as a phrase meaning "like" or "similar to," not introducing a list.
Key takeaway: Use a comma after "such as" when it precedes a list of items. If "such as" is part of a phrase meaning "like" or "similar to," no comma is necessary.