Regular and irregular verbs in English ! 
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Irregular verbs
There are about 200 irregular verbs in English. We can divide these into four types:
Verbs that have the same basic form, past simple and past participle.
Verbs that have the same simple past and past participle.
Verbs that have the same base form and past participle
Verbs that have a different base form, simple past and past participle
The verb Think means to think, its past simple and past participle form is Thought. If we look at the past form, we can observe that it has no ED or D ending anywhere; therefore, we conclude that Think is an irregular verb for the past simple and past participle.
These verbs are those that break the rule of regular verbs; that is, irregular verbs are those that do NOT require ED or D to form their past simple or past participle.
Irregular verbs can have different endings which we group briefly as follows:
- Verbs whose past simple and past participle are the same:
To sleep: sleep, slept, slept, slept
To sell: sell, sold, sold, sold
Gastar: spend, spent, spent
Examples of irregular verbs in sentences.
- Verbs with exactly equal forms:
Cut: cut, cut, cut
To hit: hit, hit, hit
To bet: bet, bet, bet.
+Verbs with totally different forms:
Drive: to drive, drove, drove, driven
Write: write, wrote, wrote, wrote
swim: swim, swam, swam, swam.
"The kids ate a lot of cakes at the party"
“They drove to the airport and left their car there.”
“Has she taken her tickets yet?”
“I’ve written a letter of application for the manager’s job.”
Regular verbs
These verbs are the ones that to form the simple past in affirmative sentences and the past participle must add ED or D to the verb (in this lesson we explain everything you need to know about the past participle).
The verbs Play and Listen are regular verbs in English because to use them in past participle and past simple (only in positive sentences) we must use ED. Examples:
Present: I play tennis with my cousin / Yo juego tenis con mi primo
Past tense: I played tennis with my cousin / Yo jugué tenis con mi primo
Present perfect: I have played tennis with my cousin / Yo he jugado tenis con mi primo.
In the previous example we see how using ED changes the meaning of the verb to past simple and present perfect, which uses the past participle form. Let's look at another example to confirm:
Present: We listen to music every day / Nosotros escuchamos música todos los días. Past tense: We listened to music yesterday / Nosotros escuchamos música ayer. Past perfect: We have listened to that song 2 times / Nosotros hemos escuchado esa canción 2 veces / We have listened to that song 2 times.
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When do we add the ending ED and D to regular verbs?
R= When the verb ends in the vowel E, we add only D:
Decide: decided
Smile: smiled
Create: created
When the verb ends in any other letter, we use ED:
Kill (matar): killed
Laugh (reírse): laughed
Work (trabajar): worked
Examples of sentences with regular verbs:
1) He doesn’t agree with me. 2) He agreed to fight me in June. 3) She didn’t agree with me. 4) He agreed to pay for the damages. 5) He will agree to anything I say. 6) He agreed with all the things I say.
Work created by: Salvador Arnulfo Rojas Baizabal.
Awoke=despertarse.
Drawn=Dibujar.
Flown=Volar.
Leapt=Brincar.
Spoken=Hablar.
Wanted=Querer.
Dared=Retar.
Smoked=Fumar.
Missed=Extrañar.
Climbed=Escalar.