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6.21: Twinning in Longer Words

Difficulty Level: At Grade Created by: CK-12
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Twinning in Longer Words

1. Twinning Rule: Except for the letter <x>, you twin the final __________ of a word that has one vowel sound and ends __________ when you add a suffix that starts with a __________ .

That Twinning Rule is a very good one — but it only works for words that have just one vowel sound. We have to add to it to make it work for twinning in longer words.

2. Some of the following words have one vowel sound; some have two. Remember that we are not talking about letters here; we are talking about sounds. Many times you will see two or three vowel letters but hear only one vowel sound. For instance, the word mailed has three vowel letters in it, <a>, <i>, and <e> — but it has only one vowel sound, [ā]: [māld].


Sort the words into the two groups:

Words with . . .
one vowel sound two vowel sounds

3. Each of the words below consists of a free stem plus a suffix. Sometimes when the suffix was added, the fnal consonant of the stem was twinned; sometimes it was not. Your first job is to analyze each word into its free stem and suffix, showing any twinning that has taken place:

Word = Free Stem + Suffix
forbidding = forbid + d + ing
assisted = +
committed = +
revolting = +
concealed = +
submitting = +
disgusted = +
retainer = +
regretting = +
retreated = +
referring = +
unsnapped = +

4. Now sort the free stems that you found in your analysis into these two groups:

Free stems in which twinning . . .
occurred did not occur

Word Venn. Into Circle A put only words that end CVC. Into Circle B put only words that contain two vowel sounds:


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Date Created:
Feb 23, 2012
Last Modified:
Jan 16, 2015
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