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13.19: More Words with < cc > – and More on [ks]

Difficulty Level: At Grade Created by: CK-12
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More Words with <cc> – and More on [ks]

1. The following words all contain assimilated forms of the prefixes ad-, sub-, or ob-. Analyze each one into prefix plus stem to show where the <cc> comes from, and fill in the blanks:

Word Analysis: Prefix + Stem The letter after <cc> is ... The <cc> spells the sound ...
accounting a\begin{align*}\cancel{d}\end{align*}+ c + counting <o> [k]
accessory a\begin{align*}\cancel{d}\end{align*} + c + cessory <e> [ks]
accompanied a\begin{align*}\cancel{d}\end{align*} + c + companied <o> [k]
occurred o\begin{align*}\cancel{b}\end{align*} + c + curred \begin{align*}<u>\end{align*} [k]
occasionally o\begin{align*}\cancel{b}\end{align*} + c + casionally \begin{align*}<a>\end{align*} [k]
accidentally a\begin{align*}\cancel{d}\end{align*} + c + cidentally \begin{align*}<i>\end{align*} [ks]
accomplishment a\begin{align*}\cancel{d}\end{align*} + c + complishment <o> [k]
successor su\begin{align*}\cancel{b}\end{align*} + c + cessor <e> [ks]
succinctly su\begin{align*}\cancel{b}\end{align*} + c + cinctly \begin{align*}<i>\end{align*} [ks]
occupation o\begin{align*}\cancel{b}\end{align*} + c + cupation \begin{align*}<u>\end{align*} [k]

2. When there is an \begin{align*}<\mathrm{i}>\end{align*} or an <e> right after <cc>, the <cc> is pronounced [ks]; otherwise <cc> is pronounced [k].

3. You've seen that sometimes <cc> spells [k] and sometimes it spells [ks]. All of the following words contain the sound [ks], spelled different ways. Underline the letters that spell the [ks] in each of these words:

\begin{align*}& \text{e\underline{x}clusive} && \text{e\underline{x}clamation} && \text{e\underline{x}perience}\\ & \text{haw\underline{ks}} && \text{comple\underline{x}ity} && \text{shar\underline{ks}} \\ & \text{picni\underline{cs}} && \text{e\underline{x}plode} && \text{e\underline{x}traordinary} \\ & \text{e\underline{x}tend} && \text{shrie\underline{ks}} && \text{kno\underline{cks}} \\ & \text{wre\underline{cks}} && \text{economi\underline{cs}} && \text{medi\underline{cs}}\end{align*}

4. Sort the fifteen words into these groups:

Words in which [ks] is spelled ...
<cs> <cks> <ks> <x>
picnics knocks hawks exclusive
economics wrecks shrieks extend
medics sharks exclamation

5. Look at the words in which [ks] is spelled <cs>, <cks>, or <ks>. Each one consists of a free stem and a suffix. Analyze each word to show what the free stem and suffix are:

Word Analysis: Free Stem + Suffix
picnics picnic + s
economics economic + s
medics medic + s
knocks knock + s
wrecks wreck + s
hawks hawk + s
shrieks shriek + s
sharks shark + s

5. When [ks] is spelled <cs>, <ks>, or <cks> the \begin{align*}<\mathrm{s}>\end{align*} is usually the suffix -s.

Teaching Notes.

Item 3. Re: economics. The suffix -ics is defined in the Random House Unabridged as “a suffix of nouns that denote a body of facts, knowledge, principles, etc. usually corresponding to adjectives ending in -ic”. However, they also describe -ics as the plural of -ic, which explains our analysis.

Re: the <x> words. For more on the <x> spelling of [ks] and of the voiced counterpart [gz] (in exact), see Book 6, Lesson 43, especially the teaching notes.

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Feb 23, 2012
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