This document discusses the four principal parts of verbs - present, present participle, past, and past participle. It notes that regular verbs form their past and past participle by adding -ed or -d to the present form, while irregular verbs do not follow this pattern for forming the past and past participle from the present form. The document also separates regular verbs, irregular verbs, and notes that irregular verbs do not follow the typical pattern of adding -ed or -d to create the past/past participle forms.

1. Four Principal Parts of VerbsREGULAR VerbsIRREGULAR Verbs

2. Regular VerbsA verb has four principal parts: the present, the present participle, the past, and the past participle. The past and past participle of a regular verb are formed by adding -ed or -d to the present form. Most verbs are regular.

3. Regular Verbs

4. Irregular VerbsThe past and past participle of an irregular verb do not follow the pattern for spelling verbs by adding -ed or -d to the present form.

5. Irregular Verbs

6. ALL Irregular Verbs