I had/worked/ate (simple past)

POSITIVE: 

I, You, They, We, He, She, It + worked/studied/ate/drank/had

NEGATIVE: 

I, You, They, We, He, She, It + did not or didn’t + work/study/eat/drink/have

QUESTION:  Did + I, You, They, We, He, She, It + work/study/eat/drink/have?

The Simple Past is often -ed/-ied/-d (regular verbs). For example, 

Add - ed: 

Clean - Cleaned 

Need - Needed 

Watch - Watched 

Brush - Brushed 

Pray - Prayed 

Play - Played 

Change -y to -i and add -ed:

Study - Studied 

Try - Tried 

Add - d 

Like - Liked 

Dance - Danced 

One vowel + one consonant = double the final consonant and add -ed

Stop - Stopped 

Plan -  Planned 

For example, 

This morning I brushed my teeth. 

I watched an interesting movie last night. 

We planned to get married this year. 

Some verbs are irregular. The simple past is not -ed. 

Beat - Beat 

Begin - Began 

Break - Broke 

Catch - Caught 

Choose - Chose 

Do - Did 

Draw - Drew 

Drink - Drank 

Eat - Ate 

Fall - Fell 

Feel - Felt

Read - Read /red/ 

Cost - Cost 

Cut - Cut 

For the complete list: https://www.e-grammar.org/download/list-of-irregular-verbs.pdf

For example, 

I drew a beautiful portrait last week. 

I lost my wallet when I was in the supermarket. 

We chose to visit the museum in Rome. 

I ate some apples when I was in class.  

SHORT ANSWERS

Yes, I/we/you/they did. 

Yes, he/she/it did. 

No, I/we/you/they didn’t. or I/we/you/they did not. 

No, he/she/it didn’t. or he/she/it did not.

USE: 

We use it with finished actions, states, or habits in the past when we have a finished time word (yesterday, last week, at 2 o'clock, in 2003).

I went to the cinema yesterday. 

We spent a lot of time in Germany in 2010. 

I saw him in the supermarket last week. 

COMMON TIME EXPRESSIONS

Yesterday 

A (week, month, year) ago 

Last (month, year, weekend, Monday) night 

The day before yesterday

Two (days, months, years) ago