Adding suffixes to longer words

1) These words all end with one vowel + one consonant. In each one the second syllable is stressed:

begin forget regret equip

The vowel sound in a stressed syllable must be protected from a vowel suffix, so we must double the last letter:

English spelling
 
begin + er = beginner forget + ing = forgetting
equip + ed = equipped regret + ing = regretting
 
English spelling
English spelling English spelling

2) These words also end with one vowel + one consonant, but this time the first syllable is stressed and there is a weaker vowel sound in the second syllable:

open rocket alter edit


An unstressed syllable does not need protection, so there is no need to double the last letter:

English spelling
 
open + ed = opened rocket + ed = rocketed
alter + ing = altering edit + or = editor
 
English spelling
English spelling English spelling

3) Remember: if the root word ends in two consonants, or if you are adding a consonant suffix, there is no need to think about doubling:

attend reform desert (as in 'leave') result

English spelling
 
attend + ed = attended reform + er = reformer
desert + ing = deserting result + ed = resulted
 
English spelling
English spelling English spelling


Now try these. Add the vowel suffix to the root word and type the answer. To help you decide whether to double the last letter, say the root word aloud and listen to see if the final syllable is stressed.


Add the suffix to the root word


Type the answer

admit + ing
begin + ing
open + ing
transmit + ed
blossom +ed
garden + er
regret + ing
submit + ed
upset + ing
gallop + ed
occur + ing
perform + er


 


Skip this exercise and go to the next part of this unit: Some more on adding the suffixes to longer words. *

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Unit 34: Adding suffixes to longer words

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