每一場考研路都有成敗，希望考生們能不忘初心，堅持當初決定考研的信仰。何凱文每日一句會全程陪伴考生，走完2018考研路。對于考研英語的復習，必然是長期積累夯實基礎的過程，針對考研英語復習，小編也會及時整理推送相關內容。以下是第128句：

　　今天的句子：

　　Even loneliness’s tendency to make people retreat inward and become self-centered may have served an evolutionary purpose, as hunter-gatherers who suddenly found themselves alone in the wild would have benefited from a heightened sense of self-preservation.

　　句子的解析：

　　詞匯突破：

　　1.Loneliness 孤獨

　　2.Tendency 傾向

　　3.Retreat 退避

　　4.Self-centered 自我的

　　5.Serve a purpose 有助于;有意義

　　6.Evolutionary 進化的

　　7.Heightened 增強的

　　8.Preservation 保護

　　9. hunter-gatherers(多指原始社會) 依靠狩獵和采集生活的人

　　確定主干：

　　Even loneliness’s tendency may have served an evolutionary purpose.

　　切分成分：

　　1.to make people retreat inward and become self-centered后置定語;修飾tendency

　　2.as hunter-gatherers …would have benefited from a heightened sense of self-preservation狀語從句

　　3.who suddenly found themselves alone in the wild定語從句;修飾hunter-gatherers

　　Who=hunter-gatherers

　　參考譯文：甚至是令人內斂和為自我為中心的孤獨傾向也擁有進化意義，就像突然發(fā)現(xiàn)自己獨處野外的狩獵采集人一樣，他們會受益于更強烈的自我保護意識。