What is formula of simple past tense?

Related questions

1. What are the types of simple present tense?
2. Do use in sentence?
3. How do we use present simple?
4. What is the simple present tense of study?
5. How many types of simple present tense are there?
6. What is simple grammar?
7. Why do we use past simple?
8. What is a simple subject?
9. Do your or does your grammar?
10. What is simple present in English grammar?

Tags

1. #asking
2. #tense
3. #simple
4. #subject
5. #auxiliary
6. #formula
7. #question