英语句子为什么中间要加that what who...

题目

英语句子为什么中间要加that what who...
He simply told her that he worked for the Corporation.
其实这句子中间不加that也是通的吧 那为什么要加呢
该什么时候句子中要加what who where which 这些呢

答案

这个句子加与不加that,这都是无可厚非的事,有时候也是习惯问题,而what,who,where,which,这些就不一样了,建议你看一下,从句这部分的知识,很多的,要耐心学哦!下面给你看看几个例子：
关系代词引导的定语从句举例
关系代词所代替的先行词是人或物的名词或代词,并在从句中充当主语、宾语、定语等成分.关系代词在定语从句中作主语时,从句谓语动词的人称和数要和先行词保持一致.
who,whom,that
这些词代替的先行词是人的名词或代词,who做主语指人,whom作宾语指人,that既可作主语又可作宾语（作宾语可以省略）,可以指人也可以指物.在从句中所起作用如下：(1) Is he the man who/that wants to see you?他就是想见你的人吗?（who/that在从句中作主语） (2) He is the man whom/ that I saw yesterday.他就是我昨天见的那个人.（whom/that在从句中作宾语）
Whose 用来指人或物
(只用作定语,若指物,它还可以同of which互换,指人的时候也可以用of whom 代替） (1) They rushed over to help the man whose car had broken down.那人车坏了,大家都跑过去帮忙.(2) Please pass me the book whose (of which) color is green.请递给我那本绿皮的书.
which,that
它们所代替的先行词是事物的名词或代词,在从句中可作主语、宾语等,作宾语时可以省略,例如：(1) A prosperity which / that had never been seen before appears in the countryside.农村出现了前所未有的繁荣.（which / that在句中作主语） (2) The package (which / that) you are carrying is about to come unwrapped.你拿那个包裹快要散开了.(which / that在句中作宾语）
你可以在下面的参考资料里学到更多,好好看看吧