Past Simple: Irregular verbs I

Past Simple of Irregular verbs: An Easy Approach.

Affirmative sentences.

We know that we can talk in past simple tense just adding an -ED at the end of the verb. (listen -> listened).
This rule works for the 99,99% of the verbs in English Language.
BUT
There are some verbs that DON'T FOLLOW this rule. They are called Irregular Verbs.
Irregular verbs make the Past Simple changing the verb in present into another word, sometimes a very different one.

Here you have some examples of some Irregular verbs (there are many others).

Castellano	Present Simple	Past Simple
Ir	Go	Went
Dar	Give	Gave
Decir	Say	Said
Tener	Have/has	Had
Ser / Estar	Am / is / are	Was / were
Hacer	Do /does	Did

Notice: You can't apply the regular verb rule to the irregular verbs. That won't have any sense  and English people won't understand you at all. 

For example:

Present: I go home

Past:       I went home

We can't say: I goed home. We can't add -ED at the end of an irregular verb, that would be a mistake.

If we want to make negative or interrogative sentences using irregular verbs, we do it as we do in the regular verbs, using "didn't" and "Did __ ?" and the verb in present. That doesn't change.

You can watch this video and learn even more irregular verbs.