OG10语法268题及GWD22语法总结日记(一)(1) (A) occurring when a child (B) occurring when children (C) that occurred when e land bordering the Nile from their hunting grounds. . A. inhabitants were forced to withdraw to the land bordering the Nile from their hunting grounds. . B. inhabitants had been forced to withdraw from their hunting grounds to the land that bordered the Nile C. inhabitants were forced to withdraw from their hunting grounds to the land bordering the Nile. D. inhabitants having been forced to, withdraw from their hunting grounds to the land that bordered the Nile E. inhabitants withdraw, because they are forced to, from their hunting grounds to the land bordering the Nile. C为正确选项，the land bordering the Nile 合理的规律关系应为：后者作为前者的动作具有客观性，屡次性和重复性，无明确时间概念，应使用ing形式做定语强调这一规律关系，定语从句做定语强调动作的一次性和详细时间下的详细行为。
例2 OG10-80 Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates. A. that flourished at the same time as the civilizations B. that had flourished at the same time as had the civilizations C. that flourished at the same time those had D. flourishing at the same time as those did E. flourishing at th
