<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Skip Navigation

7.23: The Sound [t] and Assimilation

Difficulty Level: At Grade Created by: CK-12
Turn In

The Sound [t] and Assimilation

1. Earlier you saw that when the prefix ad- is added to a stem that starts with a <t>, the <d> assimilates: It changes to a <t>, making two <t>'s a\begin{align*}\cancel{d}\end{align*}d + t + tain = attain.

When the prefix ad- is added to a stem that starts with a <t>, the ____ assimilates and changes to a _____.

2. Here again are the nine words from the last lesson in which [t] is spelled \begin{align*}<\text{tt}>\end{align*}<tt>.

\begin{align*}&\text{cattail} && \text{regretting} && \text{bottom}\\ &\text{committed} && \text{outtalk} && \text{attention}\\ &\text{submitted} && \text{upsetting} && \text{attend}\end{align*}

There are two words in the nine that contain the prefix ad- and a stem that starts with a <t>. Find them and analyze them to show the assimilation that gives us the \begin{align*}<\text{tt}>\end{align*} spelling, as we have done with attain:

Word = Assimilated Prefix ad- + Stem
attain = a\begin{align*}\cancel{d}\end{align*} + t + tain
= +
= +

3. Now sort the nine words into the following three groups:

Among the nine words in Item 2, the word in which the \begin{align*}<\text{tt}>\end{align*} is not due to either simple addition, assimilation, or twinning is _____________. We will talk about words like this one in the next lesson.

4. Analyze each of the following words to show where the \begin{align*}<\text{tt}>\end{align*} spelling comes from:

Word = Analysis
outtrick =
attracts =
knotty =
quitter =
attempt =
outtake =
rattrap =
regretted =
permitting =
attendance =
fattest =
fattiest =

5. Three reasons for [t] being spelled \begin{align*}<\text{tt}>\end{align*} are ______, ______, and ______.

Notes/Highlights Having trouble? Report an issue.

Color Highlighted Text Notes
Please to create your own Highlights / Notes
Show More

Image Attributions

Show Hide Details
1 , 2 , 3 , 4 , 5
Date Created:
Feb 23, 2012
Last Modified:
Jan 16, 2015
Files can only be attached to the latest version of section
Please wait...
Please wait...
Image Detail
Sizes: Medium | Original