CCSS.ELA-LITERACY.L.K.4.B
Use the most frequently occurring inflections and affixes (e.g., -ed, -s, re-, un-, pre-, -ful, -less) as a clue to the meaning of an unknown word.
Examine word structure elements and word patterns to determine meaning (e.g., plural forms, simple compounds).
Use the most frequently occurring inflections and affixes (e.g., -ed, -s, re-, un-, pre-, -ful, -less) as a clue to the meaning of an unknown word.