Grammar and Language Workbook

Unit 3, Verbs 93

Copyright © by Glencoe/McGraw-Hill

Grammar

Lesson 21

Irregular Verbs I

Verbs that do not form their past and past participle by adding the ending -ed are

called irregular verbs. With some irregular verbs, one vowel changes in the past

form and past participle.

BASE FORM PAST FORM PAST PARTICIPLE

begin began begun

drink drank drunk

sing sang sung

swim swam swum

With other irregular verbs, the past form and the past participle are the same.

BASE FORM PAST FORM PAST PARTICIPLE

bring brought brought

buy bought bought

catch caught caught

feel felt felt

lay laid laid

leave left left

make made made

sit sat sat

sleep slept slept

teach taught taught

think thought thought

Exercise 1 Write in the blank the past form of the verb in parentheses.

After school, Lisa [ left her books in the library. (leave)

1.Jack [ slept in the green tent. (sleep)

2.Martin [ won the essay contest. (win)

3.She [ taught me how to do a cartwheel. (teach)

4.Each cast member [ made a costume. (make)

5.We [ swam the length of the pool twice. (swim)

6.The telephone [ rang while I was in the shower. (ring)

7.Thomas [ sold his old skateboard. (sell)

8.After ten minutes, we [ caught up. (catch)