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# 9.4: Lesson Four

Created by: CK-12

## The Prefix Com-

1. Many words contain some form of the prefix com-. The <m> in com- often assimilates when it is added to certain stems.

The first three letters in each of the following words are some form of the prefix com-. Sometimes the <m> has assimilated and sometimes it has not. Analyze each word into its prefix plus stem and show any assimilation that has taken place.

Word = Prefix + Stem
correspond = co$\cancel{m}$ + r + respond
combine =
companion =
collapse =
connect =
committee =
correct =
commercial =
collect =
college =
community =
company =

2. Sort the words into these two groups:

3. Now sort the six words in which the <m> did not assimilate into these two groups:

4. And now sort the six words in which the <m> assimilated into these three groups:

CrossWords. This crossword contains twelve words that contain some form of the prefix com-:

Across

2. Pal

3. Working group

4. Gather

8. Neighborhood

9. Cave in

Down

1. Agree with

3. School after high school

4. Mix together

6. Not wrong

## Subjects:

1 , 2 , 3 , 4 , 5

## Date Created:

Feb 23, 2012

Apr 29, 2014
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