Doubling consonants

When suffixes make consonants double

Look at this word sum

prefix base suffix

un + help + ful

What is the base word?

careless unkindness winner

skipping thinnish playful

Finding the base word

Look at these words. What happened when you add the suffix

get + ing = getting slip + ed = slipped

star + y = starry bag + age =baggage

hot +er = hotter fat + est =fattest

Vowel suffixes

• Brainstorm some vowel suffixes with your partner

Remember!

• It is only vowel suffixes that cause doubling

• It only affects the last letter of the word you are suffixing it to

• The last letter only doubles when there is only one consonant at the end• There is only one vowel letter

immediately before that last consonant

One consonant and one vowel before it?

• Is there just one consonant at the end?sad sand bet rest hit hint spot sport cut

hurt

• Is there just one vowel before it?• bat beat step sleep mat moat

• big + er• list + ed• swim + ing• eat +able• clap + ed• sad + ly

win + ing =

skip + ing =

run + ing =

hit + ing =

winning

skipping

running

hitting

beg+ ed =

trip + ed =

jog + ed =

sip + ed =

begged

tripped

jogged

sipped