Past time/ Past tense

Question 1

What is past tense?

Answer 1

It shows an action that has already happened.

Question 2

How do you make verbs to be in the past tense?

Answer 2

By adding -ed.
For example:
Walk- Walked
Jog- Jogged
Skip- Skipped

Question 3

How do you make irregular verbs to be in the past tense?

Answer 3

The irregular verbs change completely.
For example: 
Do - Did
Break- Broke
Fly- Flew
Run - Ran
Hide- Hid
Bite - bit