Choose between the past tense and past participle

The perfect tense usually describes something that has, had, or will have happened. It uses a form of the helping verb to have with the past participle of a verb.

The past participle of a verb is usually the same as its past-tense form, but not always. Some verbs have irregular past participles. You have to remember them.

Toby had seen that film.

I have run a marathon.

The tree has grown taller.

Claire will have had dinner.

The past tense does not use the helping verb to have. It uses the past tense form of the verb.

Toby saw that film.

ran a marathon.

The tree grew taller.

Claire had dinner.

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