宾语从句连接词that不能省略的情况有哪些

Question

谢谢
好像有三四种情况

Answer 1

当that作learn,suggest,explain,agree,wonder,prove,mean,state,feel,hold等动词的宾语时;
当宾语从句较长时;
当主语状语置于主句尾,宾语从句之前时;
当主语谓语动词(包括非谓语动词)与宾语从句之间有插入语时;
当一个动词带有两个或两个以上宾语从句时,此时第一个that可以省略,第二个that不可以省略;
当宾语从句中的主语是this,that或this,that做主语的定语时;
当宾语从句是双宾语中的直接宾语时;
当宾语从句的主语是非谓语动词或主语从句时;
当主语中的谓语动词是固定词组时;
当主语从句有it做其先行词时;
在直接引语中,转述分句把宾语从句隔开时.

Answer 2

that引导宾语从句时一般可省略，但在以下几种情况中不能省略。

1）当that从句和主句谓语动词之间有插入词语或者从句主语之间有插入语时不能省略；

2）当that 从句与另一名词性从句并列作宾语时不能省略；

3）当that作介词宾语时不能省略。

e.g. He judged that, because he was a child, he did not understand wine

Everyone knew what happened and that she was worried.

The reason lies in that she works harder than the others do.

Answer 3

第二个宾语从句的that不能省