|
Name _______________________________________
Lesson 21
More assimilated prefixes
| ad |
+ ford |
= afford |
com |
+ respondent |
= correspondent |
| ad |
+ fliction |
= affliction |
com |
+ rupt |
= corrupt |
| ad |
+ firmative |
= affirmative |
in |
+ responsible |
= irresponsible |
| ad |
+ fection |
= affection |
in |
+ rigation |
= irrigation |
| dis |
+ ficult |
= difficult |
in |
+ resistible |
= irresistible |
| sub |
+ fered |
= suffered |
com |
+ lision |
= collision |
| sub |
+ focate |
= suffocate |
com |
+ lapse |
= collapse |
| sub |
+ ficient |
= sufficient |
in |
+ luminate |
= illuminate |
| ob |
+ ficial |
= official |
in |
+ legible |
= illegible |
| ob |
+ fered |
= offered |
in |
+ literate |
= illiterate |
| 1. |
When the prefixes in the first column are joined to roots
that begin with the letter f, how does the spelling of each
prefix change? _____ becomes _____, _____ becomes _____, _____ becomes _____,
and _____ becomes _____. |
| |
|
| 2. |
The roots in the second column begin with the letter r
or the letter l.
When the prefixes com and in are joined
to roots that being with the letter r, com is spelled _____,
and in is spelled _____. When com and in
are joined to the letter l, com is spelled _____,
and in is spelled _____. |
| |
|
| 3. |
In all of the prefixes, which letter changes
to match the first letter of the root? ______________________________________________ |
| |
|
| 4. |
What common spelling problem might occur in
all of the list words because the prefixes are assimilated into the roots?______________________________________________ |
|
Lesson Generalization
If prefixes were always added directly to a base word or root, some consonant
combinations would be difficult to pronounce:
-
- adford disficult subfocate comrespond comlapse
Assimilated prefixes solve pronunciation problems but cause spelling problems.
Double consonants result when the last letter of the prefix changes to
match the first letter of the root.
|
| © McDougal Littell Inc. |
Grade 8 Spelling SkillBuilders |
|