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Rules for Doubling a Final Consonant
Pattern 1: For one-syllable words that have one short, stressed vowel and end in one consonant, double the consonant when adding verb inflections -ed or -ing and when adding suffixes -er, -est, or -en.
Practice spelling the words in the table below, adding the word endings indicated.
Word List -ed -ing -er NoteOne word will be spelled -ar. -est -en shop run hot rot hit bat bit NoteBitter is an adjective unrelated to the verb bite. stop Word List -ed -ing -er -est -en big sad bag plan drop rob spot top Word List -ed -ing -er -est -en pot pet glad thin red sit fat bet mad set