SPELLING RULE

1.  In a one-syllable word, if the last three letters are consonant-vowel-consonant combination (CVC), double
the last consonant before adding –ing.
sit - sitting, run - running, hop – hopping

However, do not double the last consonant in word that end in w, x, or y.
sew - sewing, fix - fixing, enjoy – enjoying

2. In words of two or more syllables that end in a consonant-vowel-consonant combination, double the last
consonant only if the last syllable is stressed.
admit - admitting, regret - regretting

3. If a verb ends in –ie, change the –ie to y before adding -ing.
die - dying

4. In one-syllable words, if the verb ends in a consonant-vowel-consonant combination (CVC), double the
last consonant and add -ed.
hop - hopped, rub - rubbed

However, do not double one-syllable words ending in –w, -x, or –y.

bow - bowed, play - played, mix - mixed

5. In words of two or more syllables that end in consonant-vowel-consonant combination, double the last
consonant only if the last syllable is stressed.
prefer - preferred (The last syllable is stressed.) visit - visited (The last syllable isn’t stressed)

6. If the verb ends in a consonant, + y, change the -y to -i and –ed.
worry - worried, copy – copied

7. If the verb ends in a vowel +y, add -ed. (Do not change the –y to –i.)
play - played, annoy - annoyed

Exception: pay - paid, lay - laid, say - said