Irregular verbs do not make the past simple form with -ed. They change in a different way, so the learner must know the special past form. These verbs are common in basic English and are important in everyday past-time sentences.

Many irregular verbs have a different past simple form from the base verb. The form must be learned as a whole word because it does not follow the regular -ed pattern. These past forms are used to talk about finished actions in the past.

Verb	Form
go	went
see	saw
come	came
eat	ate
take	took
give	gave

Some irregular verbs have the same form in the present and in the past simple. The verb does not change, but the time meaning changes from the sentence. These verbs are useful because the learner only needs one form.

Verb	Form
cut	cut
put	put
hit	hit
let	let
set	set

Some irregular verbs change in similar ways. Learning small groups helps the learner recognize and remember forms faster. These groups are based on form, not on meaning.

Verb	Form
find	found
build	built
buy	bought
teach	taught
feel	felt
keep	kept

Regular verbs make the past simple with -ed, but irregular verbs do not. This difference is important because the learner cannot add -ed to an irregular verb. The past form must match the verb type.

The learner can now recognize common irregular verbs and their past simple forms. The learner can also notice verbs with no form change and can separate irregular verbs from regular -ed verbs. This helps the learner use basic past-time English more clearly.