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Educational worksheet for practicing the rule of changing 'y' to 'i' in words when adding suffixes.

A worksheet titled "Change Y to I: Yes or No?" with instructions to determine if the letter 'y' should be changed to 'i' when adding suffixes like -er, -es, or -s, featuring words such as funny, baby, happy, play, lazy, lady, enemy, fly, key, story, body, and try.

A worksheet titled "Change Y to I: Yes or No?" with instructions to determine if the letter 'y' should be changed to 'i' when adding suffixes like -er, -es, or -s, featuring words such as funny, baby, happy, play, lazy, lady, enemy, fly, key, story, body, and try.

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Show Answer Key & Explanations Step-by-step solution for: Inflectional Endings and Suffixes - Change Y to I Rule - Yes or No ...
Let’s go through each word one by one. We need to decide: when we add the ending (like -er, -es, or -s), do we change the “y” to an “i”? Then we write the new word with correct spelling.

Rule reminder (simple version):
If a word ends in “y” and the letter before it is a consonant → change y to i before adding endings like -es, -er, -ed.
If the letter before “y” is a vowel (a, e, i, o, u) → keep the “y”.

Now let’s solve each box:

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funny + -er
“funny” ends in “y”, and before “y” is “n” (consonant) → YES, change y to i → funnier
Y to I? Yes
Word: funnier

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baby + -es
“baby” ends in “y”, before “y” is “b” (consonant) → YES, change y to i → babies
Y to I? Yes
Word: babies

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happy + -er
“happy” ends in “y”, before “y” is “p” (consonant) → YES, change y to i → happier
Y to I? Yes
Word: happier

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play + -er
“play” ends in “y”, but before “y” is “a” (vowel!) → NO, don’t change y → player
Y to I? No
Word: player

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lazy + -er
“lazy” ends in “y”, before “y” is “z” (consonant) → YES, change y to i → lazier
Y to I? Yes
Word: lazier

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lady + -es
“lady” ends in “y”, before “y” is “d” (consonant) → YES, change y to i → ladies
Y to I? Yes
Word: ladies

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enemy + -es
“enemy” ends in “y”, before “y” is “m” (consonant) → YES, change y to i → enemies
Y to I? Yes
Word: enemies

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fly + -er
“fly” ends in “y”, before “y” is “l” (consonant) → YES, change y to i → flier (or flyer — both are accepted, but for this rule, we follow the pattern: fly → flier)
Y to I? Yes
Word: flier *(Note: “flyer” is also common, but since we’re practicing the rule, we use “flier”)*

Wait — actually, “fly” is a special case. In real life, people say “flyer” more often. But according to strict grammar rules for this worksheet, since “l” is a consonant, we should change y to i → flier. Let’s stick with the rule for now.

Y to I? Yes
Word: flier

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key + -s
“key” ends in “y”, but before “y” is “e” (vowel!) → NO, don’t change y → keys
Y to I? No
Word: keys

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story + -es
“story” ends in “y”, before “y” is “r” (consonant) → YES, change y to i → stories
Y to I? Yes
Word: stories

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body + -es
“body” ends in “y”, before “y” is “d” (consonant) → YES, change y to i → bodies
Y to I? Yes
Word: bodies

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try + -es
“try” ends in “y”, before “y” is “r” (consonant) → YES, change y to i → tries
Y to I? Yes
Word: tries

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Final Answer:

| Word | Y to I? | New Word |
|--------|---------|--------------|
| funny | Yes | funnier |
| baby | Yes | babies |
| happy | Yes | happier |
| play | No | player |
| lazy | Yes | lazier |
| lady | Yes | ladies |
| enemy | Yes | enemies |
| fly | Yes | flier |
| key | No | keys |
| story | Yes | stories |
| body | Yes | bodies |
| try | Yes | tries |
Parent Tip: Review the logic above to help your child master the concept of change y to i worksheet.
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