Question

从句疑问"Many people who saw the film were afraid to swim in the

Answer 1

in which 在这里是一个定语从句.

in which=where

你可以这样讲 many people were eaten by the shark in the scenes.许多人在这个情景下被鲨鱼吃了.

把这个句子放到一个定语从句中 要把介词in 提前.所以是in which many people were eaten by the shark.

你也可以说 Many people who saw the film were afraid to swim in the sea when they remmembered the scenes where people were eaten by the shark.

或者说可以改成两个句子,Many people who saw the film were afraid to swim in the sea when they remmembered the scenes.In these scenes many people were eaten by the shark.