The past tense and past participle of a regular verb are formed by adding -ed or -d to the base form.
| BASE FORM | PAST TENSE | PAST PARTICIPLE |
| love | loved | loved |
| honor | honoured | honored |
| obey | obeyed | obeyed |
An irregular verb does not follow the -ed or -d pattern. If you are unsure about whether a verb is regular or irregular, or what the correct form is, consult the following list or a dictionary. Dictionaries list any irregular forms under the entry for the base form.