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4.7: More About Suffixes and < y > to < i > Changes

Difficulty Level: At Grade Created by: CK-12
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More About Suffixes and <y> to \begin{align*}<\mathrm{i}>\end{align*} Changes

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

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

2. You've seen that <y> changes to \begin{align*}<\mathrm{i}>\end{align*} 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 \begin{align*}<\mathrm{i}>\end{align*} 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\begin{align*}\cancel{y}\end{align*} + i + er = supplier
bottl\begin{align*}\cancel{e}\end{align*} + ed = bottled
arriv\begin{align*}\cancel{e}\end{align*} + ing = arriving
stop + p + er = stopper
whit\begin{align*}\cancel{e}\end{align*} + est = whitest
lik\begin{align*}\cancel{e}\end{align*} + ed = liked
tr\begin{align*}\cancel{\mathrm{y}}\end{align*} + i + ed = tried
us\begin{align*}\cancel{e}\end{align*} + er = user
bat + t + ing = batting
surpris\begin{align*}\cancel{e}\end{align*} + ed = surprised

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

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

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1 , 2 , 3 , 4 , 5
Date Created:
Feb 23, 2012
Last Modified:
Jul 07, 2015
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