Prospecting for gold during the California gold rush was a relatively easy task, since erosion, prehistoric glacier movement, and ancient, gold-bearing riverbeds thrust to the surface by volcanic activity put gold literally within reach of anybody with a pan or shovel.
语法 Sentence Correction-1590
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CyndiaLee 2015-04-15 10:21:08
since +从句 D中since缺谓语。 reach of A 在A的触及范围内； reach for A 抓取A。 【since】 {erosion}, {prehistoric glacier movement}, and {ancient, gold-bearing riverbeds thrust to the surface by volcanic activity} （put） gold literally within reach of
张2865 2017-10-01 22:40:56
thrust过去式，过去分词都是本身，这里作为过去分词修饰riverbeds。风蚀作用、冰川运动和被火山活动搞到表面来的有金子的河床 三者共同bla bla
katieeeeee 2014-11-21 11:18:01
reach for sth.：伸手抓某物;reach of sb.：在某人能触及到的范围内 A/B/C不是因为这些物, 重心转移 D. 从句没有谓语动词杀
Calrsson 2016-12-06 15:15:37
since后边接原因从句
gjf1995315 2016-10-23 15:11:21
thrust的过去分词也是thrust。。。
Lottieeee 2016-08-30 18:04:07
since (1: erosion), (2: prehistoric glacier movement), and (3: ancient, gold-bearing riverbeds thrust to the surface by volcanic activity) put gold literally within reach//// "riverbeds" is a noun, and "thrust" is its adjective.
ChiantiChen 2016-08-12 13:43:05
since后加句子 thrust- thrust- thrust推 这里是done by修饰riverbeds put是谓语动词
summersummerfun 2016-08-02 17:37:23
since 后面要跟一个完整的句子，这里thrust是定语，put是谓语动词。
凡糕君 2016-07-22 20:26:43
若原因要强调动词，就不能用because of+n，而要用句子结构。 1）since表示自然的原因 2）thrust-thrust-thrust，原型，过去式，过去分词形式一样。 这里的thrust是过去分词的形式，thrust的过去分词形式就是原形，所以这里并不是双谓语。
shisu0610041 2016-07-17 01:33:24
thrust是过去分词（thrust-thrust-thrust），在这里：thrust to the surface by volcanic activity 过去分词做定语修饰riverbed。
Kae6 2016-04-01 00:09:33
若原因要强调动词，就不能用because of+n，而要用句子结构。
zhangjunya 2016-03-06 23:09:24
【since】 {erosion}, {prehistoric glacier movement}, and {ancient, gold-bearing riverbeds thrust to the surface by volcanic activity} （put） gold literally within reach of
