Irregular Verbs: The Ones You Actually Need

Most English verbs add -ed for the past. Irregular verbs don't — they change shape, and you simply have to know them. The single most useful habit is to learn each verb as a set of three forms: the base form, the past simple, and the past participle. Learn go / went / gone as one unit, not as three separate facts.

Why three forms?

Each form has its own job, which is why knowing only two leaves you stuck.

That's the whole system. Once the three forms are in your head, the grammar around them takes care of itself.

Group 1: all three the same

The easiest group — nothing changes. Start here.

Group 2: last two the same

The biggest group, and a big win: learn one past form and it covers both slots.

Group 3: all three different

These need the most attention — and they're also the most common verbs in English.

Notice the sound patterns inside the group: drink–drank–drunk, sing–sang–sung, swim–swam–swum all move the same way. Grouping by sound is far easier than memorizing an alphabetical list.

Common mistakes

Past simple after have. Have/has needs the past participle.

Past form after did. Did already marks the past, so the verb returns to its base form.

Adding -ed to an irregular verb.

A few verbs allow both forms, and that's normal: learned/learnt, dreamed/dreamt, burned/burnt. American English usually prefers the -ed version.

Quick exercise

Put the verb in the right form.

1. I ___ to Rome last summer. (go)
2. Have you ever ___ sushi? (eat)
3. Did you ___ my message? (see)
4. She has ___ me a lot about design. (teach)
5. They ___ the tickets online yesterday. (buy)
6. The window was ___ during the storm. (break)