The Spelling Rules for Adding Suffixes

In the test you have just done, there was no change to the root word when the suffix was added. For example:

word lists
 
painful cleaned thicken dusty
 
word lists
word lists word lists

Teaching point It is not always so easy!

Sometimes we need to double a letter:

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run + ing = running spot + ed = spotted mad + er = madder
 
word lists
word lists word lists

 

This unit teaches you how to add suffixes to words of one syllable. The rules for adding suffixes to longer words are slightly different and these are in Unit 34.


Sometimes we need to drop the letter e:

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date + ing = dating froze + en = frozen shine + y = shiny
 
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word lists word lists

 

Sometimes we need to change the root word:

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copy + ed = copied happy + ness = happiness leaf + s = leaves
 
word lists
word lists word lists


next part of the spelling course Go to next page: When do we need to double letters?
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Unit 9: Adding suffixes: the spelling rules

Page 3 of 19

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