og 1 关于as

1.     The Wallerstein study indicates that even after a decade young men and women still experience some of the effects of a divorce occurring when a child.

(A) occurring when a child

(B) occurring when children

(C) that occurred when a child

(D) that occurred when they were children（D）

(E) that has occurred as each was a child

Choice D is best.

Choice E includes an incorrect verb tense (has occurred) and wrongly replaces when with as. Also, each was does not properly refer to men and women.

OG在对E的解释中，指出有三点错误：

（1）Choice E includes an incorrect verb tense (has occurred)

（2）wrongly replaces when with as.

（3）each was does not properly refer to men and women.

1、3点比较明确。但是我不清楚为什么这里as不能取代when ？

从字典里查了as的解释：WHILE, WHEN *spilled the milk as she got up*

谢谢！！！

as表过程, when表示一时间点.