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11.13: Lesson Thirteen

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The Spelling <rr> and Assimilation

1. Here are the twenty words from the previous lesson that all contain <rr>:

& \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}

You have seen that five of these twenty words have <rr> because of simple addition and five of them have <rr> because of twinning. Find these ten in the list above and cross them off.

2. When the prefixes ad-, com-, and in- are added to stems that start with an <r>, they assimilate to _______, _______, and ______.

3. Ten of the twenty words above with [r] spelled <rr> start with an assimilated form of ad-, com-, or in-. Find them, write them in the left column below, and analyze them to show the assimilation that leads to the <rr>:

Word Analysis: Prefix + Stem
irrigation i\cancel{n} + r + rigation

4. The following words each contain two prefixes and a stem. See if you can analyze them to show where the <rr> comes from:

Word = Prefix^1 + Prefix^2 + Stem
incorrect = + +
rearrange = + +
unirritable = + +
overirrigated = + +
noninternational = + +
uncorrupted = + +
rearresting = + +
nonsupportive = + +
disarranged = + +
irresponsibly = + +
unsurprising = + +
reinterpret = + +
noninterrupted = + +
disinterested = + +

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1 , 2 , 3 , 4 , 5

Date Created:

Feb 23, 2012

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Apr 29, 2014
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CK.ENG.ENG.SE.1.Basic-Speller.11.13

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