Rule 1 • What is a Suffix?
A suffix is a letter or group of letters placed at the end of a base word to change its form, tense, or meaning (e.g., -ed, -ing).
Rule 2 • Just Add the Suffix
When a base word ends in a blend (-lp, -rk, -nk) or vowel team (-ow, -ee, -oi, -ee), add -ed or -ing directly without changing the base word.
Rule 3 • The Sounds of -ed
The suffix -ed says /t/ after voiceless consonants (helped, worked, thanked) and /d/ after voiced sounds (showed, seemed, cheered).