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Name _______________________________________
Lesson 13
The assimilated prefix ad
| dis + count |
= discount |
re + cent |
= recent |
| ad + count |
= account |
ad + cent |
= accent |
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| in + fection |
= infection |
in + fluence |
= influence |
| ad + fection |
= affection |
ad + fluence |
= affluence |
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| re + peal |
= repeal |
dis + proved |
= disproved |
| ad + peal |
= appeal |
ad + proved |
= approved |
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| re + semble |
= resemble |
re + sistance |
= resistance |
| ad + semble |
= assemble |
ad + sistance |
= assistance |
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| re + tract |
= retract |
in + tention |
= intention |
| ad + tract |
= attract |
ad + tention |
= attention |
| 1. |
Do the words in each pair have the same root? _____
Do they have the same prefix? _____ |
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| 2. |
Look at the first word in each pair. Does the spelling of
the prefix change when it is added to form the word? _____ |
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| 3. |
What prefix is added to form the second word in each pair?
_____
How is the prefix spelled when it is joined to a root that begins with
a c? _____ an f? _____ a p?
_____ an s? _____ a t? _____ |
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| 4. |
Is it easier to pronounce adtract or attract?
__________
adfection or affection? __________
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Lesson Generalization
When the last letter of a prefix changes to match the first letter of a root, the
prefix is said to be assimilated.
ad + similat + ed = assimilated
(to) (same or similar) (made similar to)
The prefix ad
is assimilated more often than any other prefix. It also causes more double-consonant
spelling problems than any other prefix.
Mnemonic device:
Remember that one of the double consonants is really the
Mad Ad
in disguise.
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Grade 7 Spelling SkillBuilders |
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