in which的用法！！！！

1、根据which引导的从句而定，当从句中需要以in作介词时使用。

例句：The school which he once studied in is veryfamous.

= The school in which he once studied is very famous.

他曾经就读的这所学校很有名。

2、固定搭配

例句：The plane may be several hours late, in which case there's no point in our waiting.

（固定搭配：in the case)     

飞机可能会晚点几小时，这种情况下等待是没有意义的。

扩展资料

which是定语从句的关系代词之一，有且仅有两种用法。

1、which前面有逗号，逗号前面是个名词，which就近指代那个名词。

例句：Tankfield emailed Pea some photos, which did not cheer Pea up.

坦克福尔德给皮尔邮件了一些照片，却并没有让皮尔高兴起来。

2、which前面是介词，介词前面是名词，which就近指代介词前的那个名词，名词和介词之间有无逗号均可。

例句：Tankfield once lent Pea a book from which Pea glimpsed the basics of genes.

坦克福尔德曾经借给皮尔一本他曾经在上面瞄到过基因理论的书。