同学你好，该知识点来自沪江网校《初中水平直达雅思6.5分【全额奖学金班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
一般情况下,宾语从句中的that只起引导作用,在句中不做任何成分,没有实际意义,通常可以将其省略.例如,
I think (that)he’ll be all right in a few days.
Current trends indicate (that)transportation is becoming cleaner,faster and safer.
但是,that在引导宾语从句时并非在任何情况下都可以省略.在以下情况中,that不能省略.
（1）and 连接两个或两个以上的宾语从句时,第一个that可以省略也可以不省,但其它不能省略,以免产生误会：
Galileo’s observations show (that) Copernicus, another great astronomer, was right and that the earth moves around the sun, not the other way around.
(2) that引导的宾语从句放在except ,but 等介词后面的时候,that不能省略.
He is a good student except that he is a little careless.
(3) that 引导的宾语从句放在句首起强调作用的时候,that不能省略.
That he ever said such a thing I simply don’t believe.
(4) 主句谓语动词和that引导的宾语从句之间有插入的时候,that不能省略
Everyone could see , I believe , that Tom was really afraid .
(5) it 作形式宾语时,that 引导的宾语从句中的that不能省略.
We thought it strange that Xiao Wang did not come yesterday.
(6) 在对话中简短回答时,如果that引导的宾语从句独立出现,that不能省略.
---What did he say ?
---That he won the first prize in the game .  
(7) 在可接双宾语动词后that引导的宾语从句作直接宾语的时候,that不能省略.
The foreign friend tells us that Chinese is one of the most difficult languages to learn .
(8) 在that引导的宾语从句之前或之后紧接着一个状语的时候,that不能省略.
He suddenly caught sight of the boy and realized at once that he had seen him before.
(9) 在直接引语中,that引导的宾语从句与主句隔开的时候,that不能省略,.
“I’m sorry to say,” he said ,“that you are not the suitable person for the work.”

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