and 表并列,前文没有与putting并列的结构
because of cannot introduce a clause idioms: within reach of...
because of A, B, and C that thrust ancient, gold-bearing riverbeds to the surface, and putting gold literally within reach of anybody putting 和 thrust时态不平行
Prospecting for gold during the California gold rush was a relatively easy task, because of erosion, prehistoric glacier movement, and volcanic activity that thrust ancient, gold-bearing riverbeds to the surface, and putting gold literally within reach of anybody with a pan or shovel. there's nothing parallel to the boldface construction; "and" requires that there be some parallel construction earlier in the sentence.
because of后结构复杂,读者读起来有一种断了气还没读完的感觉;putting没有动作发出者
and的并列,putting gold literally与前面的不是并列关系。
because 后面不能太长,and putting的并列结构有问题
prehistoric glacier movement 和 erosion是并列成分,不是同位语
and 表并列,前文没有与putting并列的结构
because of后结构复杂,读者读起来有一种断了气还没读完的感觉;putting没有动作发出者。
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