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# 4.7: Lesson Thirty-one

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## More About Suffixes and <y> to $<\mathrm{i}>$ Changes

1. Here is another chance for you to try out your new rule for spelling plural nouns. Add either $-s$ or -es to each singular noun. Be sure to show any changes:

Singular Noun + Suffix = Plural Noun
abilit$\cancel{y}$+ i + es = abilities
dance + s = dances
six + es = sixes
yesterday + s = yesterdays
memor$\cancel{\mathrm{y}}$+ i + es = memories
demand + s = demands
match + es = matches
Wednesday + s = Wednesdays
famil$\cancel{\mathrm{y}}$ + i + es = families
design + s = designs
crush + es = crushes
librar$\cancel{\mathrm{y}}$+ i + es = libraries
beaut$\cancel{y}$+ i + es = beauties
pattern + s = patterns
success + es = successes
attorney + s = attorneys

2. You've seen that <y> changes to $<\mathrm{i}>$ when you add the suffix -es to singular nouns that end in a <y> with a consonant right in front of it. A <y> with a consonant in front of it changes to $<\mathrm{i}>$ also when you add the suffixes -ed or -er or -est.

3. Watch for all kinds of changes when you combine the following words and suffixes to make new words:

Word' + Suffix = New Word
suppl$\cancel{y}$ + i + er = supplier
bottl$\cancel{e}$ + ed = bottled
arriv$\cancel{e}$ + ing = arriving
stop + p + er = stopper
whit$\cancel{e}$ + est = whitest
lik$\cancel{e}$ + ed = liked
tr$\cancel{\mathrm{y}}$ + i + ed = tried
us$\cancel{e}$ + er = user
bat + t + ing = batting
surpris$\cancel{e}$ + ed = surprised

4. Here are some to do the other way round:

Word = Shorter Word + Suffix
dancer = danc$\cancel{e}$ + er
supplied = suppl$\cancel{y}$ + i + ed
waltzing = waltz + ing
arrived = arriv$\cancel{e}$ + ed
designer = design + ed
silier = sill$\cancel{y}$ + i + er
phoning = phon$\cancel{e}$ + ing
writer = writ$\cancel{e}$ + er
guessing = guess + ing
pitcher = pitch + er

## Categories:

1 , 2 , 3 , 4 , 5

## Date Created:

Feb 23, 2012

Apr 29, 2014
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