The document discusses how to add -er and -est to adjectives to form comparisons. It explains that when adding -er or -est, some adjectives double the final letter while others change the final y to i. Some examples provided are big/bigger/biggest, hot/hotter/hottest, and lazy/lazier/laziest. The document then provides sentences applying these comparative adjective rules.

1. Adjectives Adding er and est

2. The car is slow . The word slow tells what kind of car it is. Slow describes the car’s condition. Words that describe nouns are called ADJECTIVES .

3. When we add er or est to some words we double the last letter .

4. bi g bi gg er bi gg est

5. ho t ho tt er ho tt est

6. we t we tt er we tt est

7. re d re dd er re dd est

8. sa d sa dd er sa dd est

9. When we add er or est to words ending with y we change the y to i . eas y eas i er eas i est

10. happ y happ i er happ i est

11. prett y prett i er prett i est

12. hair y hair i er hair i est

13. laz y laz i er laz i est t i d y tid i er tid i est nos y nos i er nos i est

15. John is the __________ boy in the whole world. happy happiest

16. Toby seems to be ________ than his brother. lazy lazier

17. The rose is a _________ flower than the dandelion. pretty prettier

18. The boys are ________ than the girls. nosy noisier

19. Christmas is the ___________ time of year. merry merriest

20. Your jokes are _________ than mine. funny funnier

21. The __________ monster you ever saw in your life was trying to get in. Hairy. hairiest