Name _______________________________________

Lesson 4   Prefixes and base words

re + strain = restrain dis + satisfied = dissatisfied
re + quest = request dis + charge = discharge
ex + plain = explain sub + standard = substandard
ex + change = exchange sub + committee = subcommittee
in + justice = injustice pre + historic = prehistoric
in + corporate = incorporate pre + judge = prejudge
de + notation = denotation con + tribute = contribute
de + merit = demerit con + genial = congenial
pro + claim = proclaim per + fume = perfume
pro + portion = proportion per + mission = permission
TERMS TO KNOW:  A prefix is a group of letters added to the beginning of a word to make a word with a different meaning.

1.What ten prefixes have been added to form spelling words?

__________   __________   __________   __________   __________

__________   __________   __________   __________   __________

 
2.Were the prefixes added to complete words?   __________
 
3.Do the spellings of the prefixes or the base words change when they are joined?

__________

 
4.Do the meanings of the words with prefixes added differ from the meanings of the base words?

__________


Lesson Generalization
A prefix can be added directly to a base word to form a new word with a different meaning. The spelling of the base word does not change when a prefix is added.


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