monomorphemic 是單字素構字 就像是每一個國字，可以代表一個意思 另外polymorphemic則是多字素構字 就像是英文，每個字都由字母拼成 如果沒記錯應該是這樣
..., and a root in the stricter sense may be thought of as a monomorphemic stem. Roots can be either free morphemes or bound ...
a. retroactive retro+act+ive b. befriended be+friend+ed c. televise tele+vise d. margin margin e. endearment en+dear+ment f. psychology psych+o+logy g.unpalatable un+palat+able h. holiday holi+day i. grandmother grand+mother j. morphemic morphem+ic k. mistreatment mis+treat+ment l. deactivation de+act+iv...