Answer the following questions. Your answers should be clear and short.The following words are formed by means of suffixation. Group the following words into noun suffixes, verb suffixes and adjective suffixes.
darken, economical, socialist, decision, beautify, modernize, adulthood, successful, childish【正确答案】：
NOUN SUFFIXES: SOCIALIST, DECISION, ADULTHOOD
VERB SUFFIXES: DARKEN, BEAUTIFY, MODERNIZE
ADJECTIVE SUFFIXES: ECONOMICAL, SUCCESSFUL, CHILDISH
【题目解析】：本题考查根据后缀将给出的词汇分组。分为：名词后缀、动词后缀、形容词后缀的词。所以可分为：-ist, -sion, -hood这些都是名词后缀-en, -ify, -ize这些都是动词后缀-cal, -ful, -ish这些都是形容词后缀
