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11.12: Sometimes [r] is Spelled < rr >

Difficulty Level: At Grade Created by: CK-12
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Sometimes [r] is Spelled <rr>

1. Most of the time [r] is spelled <r> - but not always. Here are twenty words in which it is spelled <rr>. Underline the <rr> spellings in each word:

i\underline{rr}igationove\underline{rr}iperefe\underline{rr}eda\underline{rr}esta\underline{rr}ivalinte\underline{rr}uptconfe\underline{rr}ingsca\underline{rr}edco\underline{rr}ectlyco\underline{rr}uptioni\underline{rr}itateprefe\underline{rr}eda\underline{rr}angei\underline{rr}egularco\underline{rr}espondunde\underline{rr}atedtransfe\underline{rr}ingi\underline{rr}esponsiblesu\underline{rr}enderedsu\underline{rr}oundings

2. You have seen that we often get double consonants because of simple addition: If a word contains two elements, and the first element ends in a consonant and the second element starts with the same consonant, we get a double consonant. Five of the twenty words have <rr> because of simple addition. Find these five words, write them in the left column below, and then analyze them to show where the <rr> comes from:

Word Analysis
overripe over + ripe
interrupt inter + rupt
underrated under + rated
surrendered sur + rendered
surroundings sur + roundings

3. Twinning Rule. You twin the final consonant of a free stem that has one vowel sound and ends CVC when you add a suffix that starts with a vowel You twin the final consonant of a free stem that has two vowel sounds whenever you add a suffix that starts with a vowel and the stem ends CVC and has strong stress on its final vowel both before and after you add the suffix.

4. In five of the twenty words above, [r] is spelled <rr> because of twinning. List them below and analyze each one to show how twinning produces the <rr> spellings:

Word Analysis
referred refer + r + ed
conferring confer + r + ing
scarred scar + r + ed
preferred prefer + r + ed
transferring transfer + r + ing

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