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5.12: Sometimes -es Is [iz], Sometimes [z]

Difficulty Level: At Grade Created by: CK-12

1. The suffix -s is sometimes pronounced [s] and sometimes pronounced [z], but it is always spelled <s>. The suffix -es is sometimes pronounced [iz] and sometimes pronounced [z], but it is always spelled <es>.

2. Read these verbs. Listen carefully to the suffixes -s and -es:


3. Sort the verbs into these two groups:

Verbs with the Suffix -s Verbs with the Suffix -es
gives buttons taxes attaches
holds trips fixes cries
says sniffs matches fizzes
digests shapes hurries presses
seems coughs finishes flashes
grows lets universes erases
weighs strikes
obeys talks
waits unlocks

4. Sort the verbs that contain the suffix -es into these two groups:

Verbs in which -
[iz] [z]
taxes attaches hurries
fixes fizzes cries
matches presses
finishes flashes
universes erases

5. When the suffix -es is added to verbs that end with the letter <y> with a consonant letter in front of it, the <y> is changed to <i> and the -esis pronounced [z].

6. When you want to add the meaning “now” to verbs that end in the sounds [s], [z], [sh], or [ch], you add the suffix -es, and the suffix is pronounced [iz].

Word Squares

Fit these twelve -sand -es verbs into the squares. We've given you a start:


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Date Created:

Feb 23, 2012

Last Modified:

Jul 07, 2015
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