[求助]关于as和when的区别

violetsapphire

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
(E) that has occurred as each was a child

答案没有问题.
但我觉得对E选项中对as和when的区别解释地很模糊:
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.

这个解释等于没说.

as有一个用法是表示:当什么时候
而when也有如此用法.

这两个的区别是什么?

我找了一下GRE GMAT 和 LSAT 好象as用做:当什么时候的用法好象很少见.

还请指教!

多谢!

studyabroads

as用的比较少吧

lonelyplanet

as clause action is related to the main clause's action. "as a child" is talking about the speciphic group, so this expression has nothing with time. when clause normally uses to talk about time or periods. for example, ...when he is a child. or ... when he is 10 years old.

violetsapphire

谢谢楼上!

但我还是有点不大明白呀.

"as a child" is talking about the speciphic group, so this expression has nothing with time

这个没有问题.

可是:
when clause normally uses to talk about time or periods. for example, ...when he is a child. or ... when he is 10 years old.

我觉得as也可以替代when呀!

我查了一下郎文英英词典:

对as是这么解释的:

while or when: for example:
I saw Peter as I was getting off the bus.
As time passed, things seemed to get worse.

而对when是这么解释的:

at the time that:
for example:
Things were different when I was young.
The dog jumped up when he whistled.

我想是不是as指代"当什么时候"的意思,是指一个过程.
而when表示此意思的时候,是指"一个点的时间,正如词典的解释at the time that,本身at the time就代表点的时间"

还请多指教!
多谢!

BTW:大家手边除了OG的解释外,还有没有其他的语法书呀?
我看不明白的时候,就去查郎文英英字典,可是感觉不是很好.
大家能推荐一下吗?
多谢!

EquityBeta

在描述时间时，as只能当连词用。这是最大差异。
这里我看不出有明显的错误。
请牛人多指导！

susenmay

when 从句表示的时间是一具体的时间是a brief,finite moment,
as 表示的是an extended period of time。
如OG 84题 as people age.

violetsapphire

谢谢!

我翻了一下OG84的解释,果然很清楚呀!

呵..........

我现在不想做LSAT了,开始狂做SC了.

wangjianghua

main clause action dependent clause action
1 while, as , when short long

2 while, as long long
3 (just) as, (just) when short short

explanation: short action: ring open; long action: walking, talking.
in situation2: as: two situations which develop or change together. As I get older, I get more optimistic.
while: two actions happen at the same time. while you are reading the information, I am working.
when: refer to ages and periods of time. when I was a child, we in in london.

the information above comes from grammar usage book. I think it is clear. if you have other opinions, we can discuss it.

bradywangs

ding !!!