Past Simple: Regular Verbs with -ed, Be Verbs was/were, and 11 Most Common Irregular Verbs to Remember
A friend asks you what you did yesterday, and you want to say "I went to see a movie," but your brain freezes: how do you change go? Is it goed? Once you get stuck, the conversation just stops.
Don't worry, this is a hurdle almost every English learner faces. The past simple is used to talk about things that already happened and ended in the past—yesterday, last week, that year, or a long time ago. Its rules are actually quite simple; the only two real pitfalls are "not memorizing irregular verbs well" and "forgetting to change the verb back to its base form when did is present." This article will help you master them one by one.
Regular Verbs: Just Add -ed
The easiest group is called regular verbs (regular verbs). The past tense is formed by adding -ed to the base form, regardless of the subject—they are all the same.
- I worked late yesterday. (I worked late yesterday.)
- We played basketball last weekend. (We played basketball last weekend.)
- She watched a movie last night. (She watched a movie last night.)
Notice in the three sentences above, whether the subject is I, we, or she, the verbs are worked, played, and watched. The past tense does not change based on the subject. This is even simpler than the present tense, where you have to add an s for he/she/it; you don't need to do that in the past tense.
Three Spelling Rules for -ed
Most verbs simply add -ed, but there are three situations where the spelling needs a slight tweak. Remembering these three representative words is enough:
- stop → stopped: When ending with a short vowel + single consonant, the consonant must be doubled (plan → planned, shop → shopped).
- study → studied: When ending with a consonant + y, change the y to i and add -ed (try → tried, carry → carried).
- like → liked: If it already ends in e, just add d (live → lived, move → moved).
Be Verbs: Past Tense Uses was and were
Be verbs (am/is/are) are special. Their past tense doesn't add -ed; instead, it is split into two words depending on the subject:
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was: Paired with I, he, she, it
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were: Paired with you, we, they
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I was tired after work. (I was tired after work.)
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He was at home all day. (He was at home all day.)
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They were very happy yesterday. (They were very happy yesterday.)
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We were late for the meeting. (We were late for the meeting.)
Quick tip: In be verb sentences, there is no other action; they describe a "state" (tired, happy, at home). If there is a real action in the sentence (go, eat, watch), do not use was/were—use the past tense of the action verb.
Negative Sentences: didn't + Base Form of the Verb
To say that you "didn't do something," use didn't (did not) + base form of the verb. Here is a key point: did has already taken on the "past" responsibility, so the main verb that follows must change back to its base form.
- I didn't go to school yesterday. (I didn't go to school yesterday.)
- She didn't watch the movie. (She didn't watch the movie.)
- They didn't eat breakfast this morning. (They didn't eat breakfast this morning.)
Look closely: it is didn't go, not didn't went ✗; it is didn't eat, not didn't ate ✗. Giving the past information to didn't once is enough; the verb doesn't need to be changed a second time.
(Negatives for be verbs are different; they do not use didn't, but simply add not: I wasn't tired. [I wasn't tired.] / They weren't at home. [They weren't at home.])
Questions: Did + Subject + Base Form
To ask "did you do something," use Did + subject + base verb. It's the same logic—once did appears, the main verb goes back to its base form.
- Did you go to the party? (Did you go to the party?)
- Did she call you yesterday? (Did she call you yesterday?)
- Did they have lunch together? (Did they have lunch together?)
This is the most common mistake made by Chinese-speaking learners: Did you went? ✗ → Did you go? ✓. Just remember this mental image—with did/didn't, the verb always goes back to its base form.
Be verb questions don't use did either; just move was/were to the front: Were you at home? (Were you at home?) / Was he tired? (Was he tired?)
11 Most Common Irregular Verbs (Must Memorize)
Ironically, most of the most commonly used verbs in English are irregular verbs (irregular verbs). Their past tense doesn't add -ed; instead, the whole word changes, so you have to memorize them one by one. The good news is: there are only a few that you use every day. Once you memorize them, you'll be set for most daily conversations.
- go → went (go): I went to the gym this morning. (I went to the gym this morning.)
- have → had (have/eat): We had a great time last night. (We had a great time last night.)
- see → saw (see): I saw your sister at the store. (I saw your sister at the store.)
- come → came (come): She came home very late. (She came home very late.)
- say → said (say): He said he was busy. (He said he was busy.)
- get → got (get/become): I got a new phone last week. (I got a new phone last week.)
- make → made (make): She made a delicious cake. (She made a delicious cake.)
- take → took (take/ride): We took the bus to school. (We took the bus to school.)
- do → did (do): I did my homework after dinner. (I did my homework after dinner.)
- eat → ate (eat): They ate dinner at seven. (They ate dinner at seven.)
- give → gave (give): He gave me a birthday present. (He gave me a birthday present.)
Quick memory tip: Group them in threes and repeat them aloud using the same sentence pattern (I went, I had, I saw…). Once it flows naturally, you won't even have to think about it when you speak.
Signal Words: Use the Past Tense When You See These
Time clues are often hidden in sentences. When you see the following words, you should almost always think of the past tense:
- yesterday (yesterday): I called him yesterday. (I called him yesterday.)
- last + time (last week / last month / last year): We met last week. (We met last week.)
- time + ago (how long ago): She left two hours ago. (She left two hours ago.)
- in + year (in a certain year): They got married in 2020. (They got married in 2020.)
- when I was young (when I was young): I lived in Tainan when I was young. (I lived in Tainan when I was young.)
How to Tell It Apart from the Present Perfect? Look for a Clear Point in Time
Many people hesitate between the past simple and the present perfect (present perfect). Actually, there is a very simple way to tell them apart.
Key takeaway tip: First, ask yourself—is there a clear past point in time in the sentence like yesterday, last week, ... ago, or in 2020?
- Has a clear past point in time → Use the past simple: I saw him yesterday. (I saw him yesterday.)
- No specific time mentioned, but still affects the present → Use the present perfect: I have seen that movie. (I have seen that movie.)
Because the past simple describes a record "locked in the past," disconnected from the present, whereas the present perfect still has one foot in the present. If you want to understand this boundary better, you can continue reading the article Present Perfect: have + Past Participle. Comparing the two will make it much clearer.
Common Mistakes
- Forcing -ed on irregular verbs:
I goed home.✗ → I went home. ✓ (I went home.) go is an irregular verb, its past tense is went, and there is no such word as goed. - Forgetting to change the verb back to its base form in questions:
Did you went?✗ → Did you go? ✓ (Did you go?) Once you have did, the verb always returns to its base form. - Mixing up be verbs and action verbs:
She was go to school.✗ A sentence cannot have both was and a base form action verb at the same time. If you want to say "She went to school," use She went to school. ✓; if you want to say "She was on her way to school," use She was going to school. ✓ (past continuous). First, think about whether you want to say "did" or "was doing," then choose. - Double past tense in negative sentences:
I didn't ate.✗ → I didn't eat. ✓ (I didn't eat.) didn't already expresses the past, so eat stays in its base form.
How to Practice in Loopy
When it comes to tenses, just memorizing the rules makes them easy to forget right after an exam. The only way to truly remember them is to encounter them repeatedly in real sentences.
Loopy's graded courses place the past simple tense into conversational contexts tailored to A1–B1 levels, allowing you to hear native speakers naturally saying I went..., Did you see... through listening, speaking, and shadowing. This helps you physically pronounce irregular verbs like went, had, and saw, and with reviews scheduled based on a forgetting curve, it deepens your memory time after time, turning rules into instinct.
Whenever you encounter a verb and aren't sure how its past tense changes, quickly look up its three principal parts in a dictionary (go-went-gone, eat-ate-eaten...) and practice pronouncing them as you listen. With a few more practices, the next time a friend asks you "What did you do yesterday?", you will be able to answer without even thinking.