that不做成分的时候.可以省略么?that和which的区别是什么?分别是什么时候用呢?谢谢····

that不做成分的时候.可以省略么?that和which的区别是什么?分别是什么时候用呢?谢谢····
that不做成分的时候.可以省略么?that和which的区别是什么?分别是什么时候用呢?谢谢····

that不做成分的时候.可以省略么?that和which的区别是什么?分别是什么时候用呢?谢谢····
that和which做比较,主要在于它们在定语从句中的用法
that 和which在定语从句中都是做关系代词,指代先行词是事物的名词或代词（that还可以指代人,which 不可以）.通常情况下二者可以互换.
区别：
关系代词用that（不用which）的情况：
1.先行词是all,anything,everything,nothing等,关系代词应用that
That's all that he told me.
2.先行词前有the only,the same,the very 或no,little,much,any,every,all 等修饰时,关系代词应用that
She is the only person that I know in this company.
3.先行词前有序数词或形容词最高级修饰时,关系代词常用that
The first thing that I want to do is to take it away.
4.当先行词同时含有"人"或"物"时,关系代词应用that
5.在固定结构the same...that...; so...that...; such...that...以及it is/was...that...的强调句型中,要用that
This is the same park that we once visited.
6.如主句以there be开头时,关系代词应用that
There is a room that has two windows.
关系代词用which（不用that）的情况：
1.非限制性定语从句中关系代词一般要用which
She won the competition,which made the whole family very happy.
2.关系代词前如有介词,关系代词须用 which; 如把介词移至句末,可用that(或省略)
There’s only one problem about which they disagree.
This is the key (that) she was looking for.
3.如果先行词是that,关系代词应用 which
I know that which you told me.
4.如先行词和定语从句之间被其它较长的成分分隔,常用which
Larry told her the story of the young airman which I narrated at the beginning of this book.(先行词为story)
5.在"those+复数形式的名词"结构中,其后的关系代词多用which
A shop should keep a stock of those goods which sell best.
6.一个句子中如有两个定语从句,第一个定语从句用了关系代词that,第二个从句中的关系代词宜用which;但在平行结构中,应重复同一个关系代词
This is the book that you bought which you have lost.
I have a house which is located on the hillside,which faces the south.
此外,that还可引导同位语从句,which不能
I have heard the news that they had won the game.
属于摘抄,但有用就行

不用that的情况 ，用which的情况
a) 在引导非限定性定语从句时。
The tree, which is four hundred years old, is very famous here.
b) 介词后不能用。
We depend on the land from which we get our food.
...

全部展开

不用that的情况 ，用which的情况
a) 在引导非限定性定语从句时。
The tree, which is four hundred years old, is very famous here.
b) 介词后不能用。
We depend on the land from which we get our food.
We depend on the land that/which we get our food from.
2) 只能用that作为定语从句的关系代词的情况
a) 在there be 句型中，只用that，不用which。
b) 在不定代词，如：anything, nothing, the one, all, much, few, any, little等作先行词时，只用that，不用which。
c) 先行词有the only, the very修饰时，只用that。
d) 先行词为序数词、数词、形容词最高级时，只用that。.
e) 先行词既有人，又有物时。
举例：
All that is needed is a supply of oil.
所需的只是供油问题。
Finally, the thief handed everything that he had stolen to the police.
那贼最终把偷的全部东西交给了警察。
能不能省略关系代词，关键是看其在句中作主语还是作宾语。作动词宾语则可省略，但作介词宾语则不能省略。

收起

that除了作宾语，一律不能省略