rules for adding suffixes that begin with a vowel

1. Rules For Adding Vowel Suffixes
111 Doubling Rule
211 Doubling Rule
Silent e Rule

2. 111 Doubling Rule
When adding a vowel suffix to
• a 1 syllable word,
• ending in 1 consonant
• after 1 vowel
• DOUBLE the final consonant before adding the
suffix
nap + ed = napped swim + er = swimmer

3. 211 Doubling Rule
When adding a vowel suffix to
• a multi-syllable word with the accent on last
syllable
• ending in 1 consonant
• after 1 vowel
• DOUBLE the final consonant before adding the
suffix
Kidnap’ + ed = kidnapped begin’ + er = beginner

4. Silent e Rule
When adding a vowel suffix to words
ending with a silent e
• DROP the e before adding the
suffix
hope + ed = hoped
take + ing = taking

5. Vowel Suffixes
-ing -est -er -ed -y
-able -ic -an -ory -ist
-en -al -ish -ible -ance

6. Try your new skills
write + ing ice + y dim + ly
flat + est submit + ed pain + ful
safe + er drop + ing sun + y
girl + ish flat + en wet + ish
lift + ed program + ing