Unit 4.1

-y + suffix

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Introduction

When a word finishes in -y and a suffix is added, the letter y changes to i in some cases.

Form

Suffixes are small words or syllables which we add at the end of a word to form a new word, a new tense or to form comparatives and superlatives.

In this case, we deal with words ending in:

  • vowel + y + suffix
  • consonant + y + suffix

Example

  • Y after a vowel:
    • buy – buyer;
    • pay – paying;
    • play – player.

 

  • Y after a consonant:
    • beauty – beautiful;
    • eighty – eightieth;
    • lazy – laziness.

Use

  • When we add a suffix (-ed, -ing, – er) to a word with a vowel followed by y at the end. In this case, the y stays unchanged.
  • When we add a suffix (-ed, -er, – ful, -ly, -ness, – eth, -es) to a word with a consonant followed by y at the end, the y must change to i.

Exercises

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