Final answer:
Parenthetical notation is required when using direct quotes or paraphrasing and when presenting original ideas or findings in English writing.
Step-by-step explanation:
In English writing, there are several situations that require parenthetical notation:
- When using direct quotes or paraphrasing: Whenever you use someone else's words directly or restate them in your own words, it is important to provide parenthetical notation to indicate the source. This helps avoid plagiarism and gives credit to the original author.
- When presenting original ideas or findings: If you are sharing your own ideas or presenting original research, it is important to provide parenthetical notation to indicate that the information is coming from you.