in which定语从句

Question

我想问下在定语从句中，in which是不是等于why啊？是不是有的时候不等于啊？

Answer 1

1. 的确，in which可以等于when，也可以等于where，但不会等于why.
关键是看定语从句中缺少时间状语还是地点状语。

2. 例如：
1）I'll never forget these days in/during which I stayed with you.
= I'll never forget these days when I stayed with you.
我永远不会忘记我和你待在一起的日子。
其中：in/during which I stayed with you = when I stayed with you
= I stayed with you in/during which = I stayed with you in/during these days
2）This is the city in which I stayed last year.
= This is the city where I stayed last year.
这就是那个去年我待的地方。
其中：where I stayed last year = in which I stayed last year
= I stayed in which last year = I stayed in the city last year.

3. 另外，有的in which找不到合适的关系副词代替。
如：I dislike the way in which you treat me.
我不喜欢你对待我的方式。
其中：in which you treat me = you treat me in which
= you treat me in the way

4. for which = why
如：Can you tell me the reason why you were late?
= Can you tell me the reason for which you were late?
你能告诉我你迟到的原因吗？
其中：why you were late = for which you were late
= you were late for which = you were late for the reason

参考资料：英语牛人团

Answer 2

定语从句中关系副词（when
\why\where等）=介词+which
由as,
which
引导的非限定性定语从句，as和which可代整个主句，相当于and
this或and
that。as一般放在句首，which在句中。
as常与从句中的know，see，
hear，expect等动词连用，还有用于the
same
as
,
such
as
等句型中，也常用于as
often
happens，as
is
often
the
case（常有的事）等句子中；而which一般不用于以上情况。
as有“正如”的含义，which没有此含义。
if
不能引导定语从句。它能引导状语从句和宾语从句。

Answer 3

in which相当于where，或在...
In which direction does it turn?
它是顺哪个方向转动的？

In which box? Guess! The blue box?
在哪个盒子里？猜！蓝色的盒子？

To heaven recent distance in which?
离天堂最近的距离在哪吗？

We live in a Universe in which there are laws.
我们生活在一个由“规律”所支配的宇宙中。

In which direction are you going, north or south?
你准备往哪个方向走？向北还是向南？

I enjoy sports in which people compete for prizes.
我喜欢人们为了奖品而比赛的运动。

Behavior is a mirror in which everyone shows his image.
行为举止是每个人展示自我形象的镜子。

for what 才是why

Answer 4

不会绝对等于
要看先行词

Answer 5

in which=when (在特定语境中是）