Name _______________________________________

Lesson 18   Doubling final consonants

transmit transmitting transmitted  
omit omitting omitted  
admit admitting admitted  
permit permitting permitted  
transfer transferring transferred  
prefer preferring preferred preference
refer referring referred reference
confer conferring conferred conference
       
differ differing differed difference
suffer suffering suffered  
offer offering offered  
happen happening happened  
gallop galloping galloped  
orbit orbiting orbited  
visit visiting visited  
pilot piloting piloted  
enter entering entered  
alter altering altered  
murmur murmuring murmured  
labor laboring labored  


1. All of the words in the first column end with a single consonant that follows a single vowel.

What syllable is accented in the first eight words? __________

What syllable is accented in the last twelve words? __________

Which words are VAC words? __________
   
2. What happens to the final consonant when ed and ing are added to the VAC words?

_________________________________________
   
3. Three of the VAC words also use the ence suffix. What syllable is stressed or accented in these words? ________________

Why isn't the final consonant doubled? _______________________


Lesson Generalization

A VAC word must have a final accented syllable. Some VAC words have a form in which the accent shifts to a different syllable when the suffix is added. For these forms, do not double the final consonant of the base word when you add the suffix: con-fer' con'fer-ence.


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