In simple terms, the past simple tense is used to talk about things that happened and were completed in the past. It’s the "once upon a time" tense—it deals with finished business.
Definition
The past simple tense describes an action that started and finished at a specific time in the past. Whether it happened five seconds ago or five centuries ago, the key is that it is over.
Types of Past Simple Verbs
English likes to keep us on our toes, so verbs are divided into two categories when moving into the past:
1. Regular Verbs
These are predictable. You usually just add -ed or -d to the base form of the word.
Walk → Walked
Play → Played
Dance → Danced
2. Irregular Verbs
These don't follow the rules. They change their spelling entirely (or sometimes don't change at all).
Go → Went
Eat → Ate
Put → Put
Sentence Structures
Here is how you build sentences in the past simple:

Sentence Type	Formula	Example
Affirmative	Subject + Verb (past)	"I ordered pizza."
Negative	Subject + Did not + Verb (base)	"I did not order pizza."
Question	Did + Subject + Verb (base)?	"Did you order pizza?"

Pro Tip: In negative sentences and questions, the word "did" handles the past tense, so the main verb stays in its normal, base form. (e.g., Use "Did you see," not "Did you ~~saw~~.")
Examples in Context
Completed Action: "I watched a movie last night."
A Series of Actions: "He woke up, drank a coffee, and left for work."
Past Habits: "When I was a kid, I played outside every day."
Common Time Markers
If you see these words, the past simple is likely nearby:
Yesterday
Last week/month/year
Two days ago
In 1998