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# 11.12: Lesson Twelve

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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:

$& \text{irrigation} && \text{interrupt} && \text{irritate} && \text{underrated} \\& \text{overripe} && \text{conferring} && \text{preferred} && \text{transferring} \\& \text{referred} && \text{scarred} && \text{arrange} && \text{irresponsible} \\& \text{arrest} && \text{correctly} && \text{irregular} && \text{surrendered} \\& \text{arrival} && \text{corruption} && \text{correspond} && \text{surroundings}$

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

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

## Categories:

1 , 2 , 3 , 4 , 5

## Date Created:

Feb 23, 2012

Apr 29, 2014
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