What are the different types of interjections used in writing?

Interjections are words or phrases that express strong emotions or sudden reactions. In writing, there are several types of interjections that are commonly used. These include:

1. Exclamatory interjections: These interjections are used to express strong emotions such as surprise, excitement, or anger. Examples include "Wow!", "Oh my God!", "Yikes!", and "Ouch!"

2. Greeting interjections: These interjections are used to greet or acknowledge someone. Examples include "Hello!", "Hi!", "Hey!", and "Yo!"

3. Farewell interjections: These interjections are used to say goodbye or bid farewell. Examples include "Goodbye!", "Farewell!", "Adios!", and "See you later!"

4. Approval interjections: These interjections are used to show agreement or approval. Examples include "Yes!", "Absolutely!", "Bravo!", and "Well done!"

5. Disapproval interjections: These interjections are used to show disagreement or disapproval. Examples include "No!", "Ugh!", "Yuck!", and "Gross!"

6. Surprise interjections: These interjections are used to express astonishment or disbelief. Examples include "Oh!", "Wow!", "Gosh!", and "Unbelievable!"

7. Hesitation interjections: These interjections are used to express uncertainty or hesitation. Examples include "Um", "Uh", "Well", and "Er".

It is important to note that interjections are often used in informal writing and are typically set apart from the rest of the sentence with an exclamation mark or a comma.