1. Grammar Lesson: Principal Parts of Verbs

2. There are four principal parts of a verb: 1. infinitive (the base form) 2. present participle 3. past 4. past participle Infinitive/basePresent ParticiplePastPast Participle (to) live(is) livinglived(have) lived (to) run(is) runningran(have) run

3. Principal Parts of Regular Verbs O All verbs form the present participle in the same way: add –ing to the infinitive/base form. O A regular verb forms its past and past participle by adding –d or –ed to its infinitive/base form. Infinitive/basePresent ParticiplePastPast Participle (to) live(is) livinglived(have) lived (to) fix(is) fixingfixed(have) fixed (to) plan(is) planningplanned(have) planned Get your colors ready!

4. Principal Parts of Irregular Verbs O All verbs form the present participle in the same way: add –ing to the infinitive/base form. O An irregular verb forms its past and past participle in some way other than by adding –d or –ed... O You might change vowels, change consonants, change vowels and consonants, or change nothing. Infinitive/basePresent ParticiplePastPast Participle (to) sing(is) singingsang(have) sung (to) lend(is) lendinglent(have) lent (to) buy(is) buyingbought(have) bought (to) cost(is) costingcost(have) cost

5. What column is the short cut to irregular vs. regular? Infinitive/base Present Participle PastPast Participle (to) fix(is) fixingfixed(have) fixed (to) plan(is) planningplanned(have) planned (to) live(is) livinglived(have) lived (to) sing(is) singingsang(have) sung (to) lend(is) lendinglent(have) lent (to) buy(is) buyingbought(have) bought (to) cost(is) costingcost(have) cost

6. Principal Parts Chart Try two on your own… To drink To talk

7. Infinitive/base Present Participle PastPast Participle Is the verb regular or irregular? (to) drink(is) drinkingdrank(have) drunk irregular (to) talk(is) talkingtalked(have) talked regular