Why do we use past simple?

Related questions

1. What is formula of simple past tense?
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4. How many types of simple present tense are there?
5. Do your or does your grammar?
6. What is the simple present tense of study?
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Tags

1. #whenever
2. #actions
3. #situation
4. #tense
5. #basic
6. #finished
7. #perfect
8. #should
9. #special
10. #means
11. #simple
12. #habits
13. #about
14. #continuous
15. #present
16. #states