1. Regular and Irregular Verbs
9.1 – 9.3

2. 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.

3. 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

4. Past Participle Ends in –d or –ed. Works with a helping verb.
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.

5. Spelling Changes
Note that sometimes while forming participles, the spelling of the verb may change.
Marry marrying married

6. Irregular Verbs
Form the past tense and past participle in unpredictable ways
USE THE CHART OR YOUR BRAIN!