Regular and Irregular Verbs

9.1 – 9.3

Principal Parts • All verbs have 4 principal parts:

– Present– Present Participle– Past– Past Participle

• Verbs are either regular or irregular based on how they form past and past participle.– Regular verbs add –d or –ed to the present to

form past and past participles.

Present Participle

• Ends with –ing– I am watching this movie.

• Works with a form of the verb be (am, is, are,was, were)

• Works to make a verb phrase

Past Participle

• Ends in –d or –ed.– I have stopped here frequently.

• Works with a helping verb.

• Works with a form of the verb have (has, have, had).

• Works to make a verb phrase.

Spelling Changes

• Note that sometimes while forming participles, the spelling of the verb may change.– Marry marrying married

Irregular Verbs

• Form the past tense and past participle in unpredictable ways

• USE THE CHART OR YOUR BRAIN!