Simple explanation
When do we use the past simple? We use the past simple for actions, situations, and events that happened and finished in the past. The time may be stated directly with expressions such as yesterday, last night, last week, or two days ago. For example, “I watched a movie last night” describes a completed action at a finished time in the past. How do regular verbs form the past simple? Most regular verbs form the past simple by adding -ed to the base form: work → worked and clean → cleaned. If a verb already ends in -e, we normally add only -d: live → lived. Some verbs need a spelling change before the ending is added, such as study → studied and stop → stopped. Positive sentences In a positive past simple sentence, we use the past form of the verb after the subject. The form is the same for every subject: I worked, she worked, and they worked. There is no special third-person form for he, she, or it in the past simple. Negative sentences To make a negative sentence, use did not or the contraction didn't followed by the base form of the main verb: “She didn't work yesterday.” Do not use the past form after didn't. The sentence “She didn't worked yesterday” is incorrect because did already carries the past-time meaning. Questions in the past simple For most yes/no questions, put did before the subject and use the base form of the main verb: “Did you call him?” With a question word, a common pattern is question word + did + subject + base verb: “Where did you stay?” Again, the main verb does not take -ed after did.
Grammar formula
Positive statement
Subject + regular verb-ed + ...They visited us yesterday.
Negative statement
Subject + did not/didn't + base verb + ...They didn't visit us yesterday.
Yes/no question
Did + subject + base verb + ...?Did they visit you yesterday?
Wh-question
Question word + did + subject + base verb + ...?When did they arrive?
Core rules
- 1
Add -ed to most regular verbs
For most regular verbs, add -ed to the base form: work → worked, clean → cleaned, visit → visited.
- 2
Add -d to verbs ending in -e
If the base form already ends in -e, add only -d: live → lived, love → loved, arrive → arrived.
- 3
Change consonant + y to -ied
If a verb ends in a consonant followed by y, change y to i and add -ed: study → studied, carry → carried. If a vowel comes before y, keep the y: play → played, enjoy → enjoyed.
- 4
Double the final consonant in some verbs
In some short verbs ending in a consonant-vowel-consonant pattern, double the final consonant before adding -ed: stop → stopped, plan → planned. This rule does not apply automatically to every verb with this ending pattern.
- 5
Use the base form after did and didn't
After did or didn't, use the base form of the main verb: “Did you watch?” and “I didn't watch.” Forms such as “Did you watched?” and “I didn't watched” are incorrect.
Useful examples
I walked to work yesterday.
I went to work on foot yesterday.
Walk is regular, so its past form is walked.
She studied English last night.
She spent time learning English last night.
Study ends in consonant + y, so y changes to i before -ed is added.
We visited our grandparents last weekend.
We went to see our grandparents last weekend.
Last weekend refers to a finished period in the past.
Tom cleaned the kitchen after dinner.
Tom made the kitchen clean after dinner.
Clean forms its past simple regularly by adding -ed.
They arrived at the hotel at nine.
They reached the hotel at nine o'clock.
Arrive already ends in -e, so only -d is added.
I didn't watch TV yesterday.
I did not spend time watching TV yesterday.
After didn't, watch stays in the base form.
Sara didn't call me after work.
Sara did not phone me after she finished work.
Didn't already marks the past, so call does not change to called.
Did you enjoy the party?
Was the party enjoyable for you?
After did, we use the base form enjoy.
Did they stay at home last night?
Were they at home for the evening last night?
Stay remains in the base form because the question already contains did.
Where did you park the car?
In what place did you leave the car?
Where comes before did in this past simple question.
The bus stopped near the station.
The bus came to a stop close to the station.
The final p in stop is doubled before -ed is added.
We played football after school.
We had a game of football after school.
Play keeps its y because a vowel comes before it.
Common mistakes
- ❌ I work yesterday. ✅ I worked yesterday. The action happened at the finished past time yesterday, so a positive past simple sentence needs the past form worked.
- ❌ She didn't studied English. ✅ She didn't study English. After didn't, use the base form. Did already marks the sentence as past.
- ❌ Did you watched the movie? ✅ Did you watch the movie? The main verb must be in the base form after did.
- ❌ He studyed last night. ✅ He studied last night. Study ends in consonant + y, so the y changes to i before -ed is added.
- ❌ We stoped near the station. ✅ We stopped near the station. With stop, the final consonant p is doubled before adding -ed.
- ❌ She lived here last year? ✅ Did she live here last year? A standard yes/no question with a main verb in the past simple uses did before the subject and the base form of the verb.
Learning tips
- Look for finished past-time expressions such as yesterday, last night, last week, and two days ago.
- Remember the three key patterns together: worked, didn't work, Did ... work?
- If a sentence already contains did or didn't, do not add -ed to the main verb.
- Learn the pronunciation of the past form together with the spelling of a new regular verb.
- Do not assume every English verb takes -ed. Verbs such as go → went and see → saw are irregular.
Practise this topic
Interactive exercises for this topic are coming soon.
PlannedRelated grammar
Related dictionary words
Frequently asked questions
How do I know if an English verb is regular?
A regular verb follows the standard pattern for forming the past, usually with -ed or -d, such as work → worked and live → lived. Irregular verbs such as go → went do not follow this pattern.
Why don't we use -ed after didn't?
Because did in didn't already carries the past meaning. The main verb therefore stays in its base form: didn't work, not didn't worked.
Why do we say “Did you work?” instead of “Did you worked?”
Did already marks the question as past. The main verb therefore stays in the base form: Did you work?
Do all regular verbs simply take -ed?
Adding -ed or -d is the basic rule, but some verbs require spelling changes. For example, study becomes studied and stop becomes stopped.
Is -ed always pronounced as /ɪd/?
No. The ending can be pronounced /t/, /d/, or /ɪd/. For example, worked ends with /t/, played with /d/, and wanted with /ɪd/.
When should I use the past simple?
Use the past simple for actions, situations, and events that happened at a finished time in the past, especially with expressions such as yesterday, last week, or two days ago.
