Do Did Done is a learning app for English Irregular Verbs. It has three types of exercises you can use to improve your English skills. All verbs are divided into logical groups which simplifies the learning process.

Wikipedia says that the English language has a lot of irregular verbs, approaching 200 in normal use, and significantly more if prefixed forms are counted. In most cases, the irregularity concerns the past tense or the past participle.

The irregular verbs include many of the most common verbs: the dozen most frequently used English verbs are all irregular.

The irregular verbs of Modern English form several groups with similar conjugation pattern and historical origin.
There are also a few anomalous cases: the verbs be and go, the verb do; and the defective modal verbs.

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