Question

一道英语语法题

Safety in school has been of great concern because of frequent reports about accidents ___ students got injured or killed while in school.

A.why B.when C.in which D.for which

为什么要选C，A为什么错？介词+which到底该怎麼判断？
答得好加分！！

Answer 1

根据句意可知，安全问题已经引起了学校的高度重视，因为经常有关于学生在校被杀或者受伤的事故被报道。

学生在校被杀或者受伤的事故
先行词是 accidents, 后面是一个定语从句来修饰是怎样的事故， 根据中文可知，是学生在这个事故当中被杀或者受伤，也就是 students got injured or killed in the accidents.
现在which来代替accidents. in which 也就是相当于 in the accidents.

about accidents in which students got injured or killed

一般常见的 表示地点时 in/ on/by which=where
表示时间时 in /at/ on which=when
表示原因 for which=why

一般用why的时候，先行词是the reason
This is the reason why he was late
This is the reason for which he was late

Answer 2

C.in which 为正确选项。
accidents ___ students got injured or killed while in school。是个定语从句，先行词accident，定语从句不缺成分。in which 逻辑上即是 in the accident，students got injured or killed while in school.（in the accident），无论语法或者句意，都是十分符合的。若选why，则句子的意思不通了。why 通常只用于先行词是reason的定语从句。

祝你进步

Answer 3

in which=where

Answer 4

这是个定语从句，后面的句子缺少介词
in the accident