时间:2018-12-19 作者:英语课 分类:托福英语


英语课

   托福阅读长难句:岩层顺序


  29. But as more and more accumulations of strata 1 were cataloged in more and more places, it became clear that the sequences of rocks sometimes differed from region to region and that no rock type was ever going to become a reliable time marker throughout the world. (TPO 6 William Smith)
  托福阅读长难句句子分析
  本句的主句是it became clear,而as引导的则是时间状语从句,表示“随着……”。主句中的it是形式主语,真正的主语是后面两个that引导的名词性从句,也就是主语从句,它们也是本句理解的重点所在。
  托福阅读词汇精记
  strata表示“地层”,它的单数形式是stratum。
  sequences of rocks指的是“岩层顺序”。
  catalog也可拼作catalogue(英式拼法),作动词时,表示“把……编目分类”, 比如:He catalogued all the insects in his collection. 他把所收集到的昆虫编目分类。catalog也可以作名词,表示“商品目录或购物指南”。
  differ from sth. to sth.,表示“从……到……不同”,可以借鉴到写作中, 比如:The attitude toward shopping online differs from person to person. 对于网上购物,不同的人有着不同的态度。
  托福阅读长难句参考译文
  但是,随着越来越多的地方出现日益增多的地层分类,清晰的事实表明:有时岩层顺序是因地区不同而发生变化,全世界还没有一种岩层能成为可靠的地质年代的标志。

1 strata
n.地层(复数);社会阶层
  • The older strata gradually disintegrate.较老的岩层渐渐风化。
  • They represent all social strata.他们代表各个社会阶层。
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