题目内容
5．To hit a weaker person is a sign ofcruelty（ cruel）分析 殴打比自己弱的人是一种残忍的表现．
解答 答案：cruelty．结合句中的of是介词，后加名词，cruel是形容词"残忍的"，名词是cruelty，故答案是cruelty．
点评 派生词，是英语主要的构词法．这方法是借前缀或后缀之助，制造出派生词，主要有名词、形容词和动词三种．前缀以否定前缀-等为主，使延伸出来的派生词变成反义词．
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