一、宾语从句的否定转移
什么是否定转移？否定转移就是否定在主句，不能在从句上进行否定。来看看下面例子吧！
I think he didn’t take away his clothes and books. (ⅹ)
I don’t think he took away his clothes and books. (√)
I suppose she can’t do it better than me. (ⅹ)
I don’t suppose she can do it better than me. (√)
什么时候用 否定转移 呢？ 必须满足下面三个条件：
1. 第一人称I或we
2. 谓语动词表示“观点、信念”等心理活动，比如：think(想), believe（相信）, suppose（料想，猜想）, expect(期望), feel（觉得）等，但是hope除外（谓语动词是hope，否定不转移）
3. 主句时态是一般现在时
满足以上三种条件，才能发生否定前移。
二、宾语从句简化：疑问词+不定式
(1) 当宾语 从句的主语与主句主语相同时 ，从句可 简化为“引导词（疑问词）+不定式”
He doesn’t know what he can do to help her.
He doesn’t know what to do to help her.
（2）当 主句的谓语动词后跟双宾语 ，并且 从句主语 与 主句间接宾语一致 时，宾语从句可简化为“疑问词+不定式”
Could you tell us what we should do next?
Could you tell us what to do next?
(3)当 主句的谓语动词时order(命令)、require(需要) ，且主句的主语与从句的主语不一致时，宾语的从句可以简化为“ 原宾语从句主语的宾格+不定式”
Most schools require that children should wear a school uniform.
Most schools require children to wear a school uniform.
大多数学校都要求孩子们穿校服。
(4)当 主句的谓语动词是find, hear, see, watch等感官动词时，宾语从句可以简化成“宾语+宾语补足语”， 宾语补足语为不带to 的动词不定式或分词。
Nancy is really a hard working student. We often see that she read books in the classroom.
Nancy is really a hard working student. We often see her read books in the classroom.
Nancy真是位用功的学生。我们经常看见她在教室里读书。
When he arrived at the airport, Jack Zhou found that fans were waiting for him there.
When he arrived at the airport, Jack Zhou found fans waiting for him there.
当到达机场时，周杰伦发现歌迷们正在那里等他。
（5）宾语从句可简化为名词
We seldom believe what he says.
We seldom believe his words.
我很少相信他的话。
三、that 引导的宾语从句的省略
主句谓语动词是say, hear, see, know, understand, declare等时，宾语从句的that可以省略，也可以不用省略。
主句谓语动词时think, believe, suppose, dare等，其后宾语从句可省略。
I think (that) this is very important.
我认为这非常重要。（that可以省略）
当句子很复杂，有多个状语时，that不可省略。
He said that you needn’t worry and that he had enough money.
他说你没有必要担心，他有足够的钱。