in which是什么从句|the situation

situation in which：是定语从句的用法，situation是先行词

例句：The situation in which she found herself was very difficult.她的处境非常困难。

Suitable for the situation in which something is used.

which是in的宾语，which在这里引导定语从句，指的是the situation

in which相当于in the situation

当关系代词在定语从句中作介词宾语时，我们通常用“介词＋关系代词”引导定语从句。如果指“人”，用“介词＋whom”如果指“物”，用“介词＋which”。例句：

This is the house in which we lived last year. 这是我们去年居住的房子。这个句子相当于This is the house which we lived in last h指代的是house，实际上which we lived in中which是in的宾语，这种情况下可以把in提前到which前，变成in which we lived例句：

Copper is one of the metals with which we are most familiar.铜是我们最熟悉的金属之一。（形容词familiar与with连用）

是定语从句，例如：

1、I also understand that this technique highly depends on the situation in which you are socialising.当然，我很清楚，这个方法是否得以实施，很大程度上取决于你所处的社交环境。

2、Netanyahu said the situation in which Israeli citizens live under the threat of rocket fire from the sky， and infiltrations into Israel from underground is non acceptable.内塔尼亚胡表示，以色列居民生活在炮火袭击和来自地下入侵的威胁下，这种情况是不可接受的。

the situation in which是介词加which 引出的定语从句。

例如，生活中我们都会遇到这种情况，熟人的名字常挂嘴边却突然忘了。

We all encounter this kind of situation in life， in which the name of an acquaintance is often mentioned but suddenly forgotten.