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今日长难句
The考研 role of natural selection in evolution was formulated only a little more than a hundred years ago, and the selective role of the environment in shaping and maintaining the behavior of the individual is only beginning to be recognized and studied.
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词汇解析
evolution 进化;演进
formulate 确切阐述;制定
a little more than 稍多于
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结构分析
主干1:The role of natural selection in evolution was formulated(被动语态)
主干2:The selective role is only beginning to be recognized and studied(主谓宾)
注意:两个主干围绕 “环境对人的作用” 展开，前句一般过去时，英语后句现在进行时，长难铺张浪费形成昔今 对比，考研构成递进关系，英语想入非非其中 only、长难提心吊胆a little 均强调时间的考研“近”，强调研究尚不成熟。英语
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参考译文
The长难 roleof natural selection in evolutionwas formulatedonly a little more than a hundred years ago,
and the selective roleof the environment
in shaping and maintaining the behavior of the individualis only beginning to be recognized and studied.
自然选择在人类进化中的作用，仅仅在100多年前，考研才得以阐明。英语
环境在塑造和维持个体行为方面的长难选择作用，现在才刚刚开始得以认识和研究。考研贫困潦倒
英语