Question

各位英语大师们帮帮忙！！

Part of the reason Charles Dickens loved his own novel,David Copperfield, was_____ it was rather closely modeled on his own life.
这里为什么要用that？？求解释！！谢谢~

Answer 1

that 在句中引导表语从句，其没有实际意义，在从句中不充当句子成份，只起连接作用，一般也不能省略。_that____ it was rather closely modeled on his own life 为表语从句。

句意：查尔斯·狄更斯喜欢他本人的小说《大卫·科波菲尔》的部份原因是该小说与他自己的生活非常的接近。

Answer 2

表语从句，主要成分是Part of the reason was that it was rather closely modeled on his own life.
that后面跟的是原因，后面的从句也不缺成分，所以用that