that与which的用法区别
定语从句which和that的用法区别
定语从句which和that的用法区别编辑整理：尊敬的读者朋友们：这里是精品文档编辑中心，本文档内容是由我和我的同事精心编辑整理后发布的，发布之前我们对文中内容进行仔细校对，但是难免会有疏漏的地方，但是任然希望（定语从句which和that 的用法区别）的内容能够给您的工作和学习带来便利。
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that与which的用法区别两者都可指物，常可互换。
其区别主要在于：1. 引导非限制性定语从句时，通常要用which:The current, which is very rapid, makes the river dangerous。
水流湍急，使这条河很危险。
He has to work on Sundays, which he doesn’t like. 他得在星期天工作,他是不喜欢这样的。
The London team, which played so well last season, has done badly this season. 伦敦队上一个季度打得很好，这个季度却打得很差。
2。
直接放在介词后作宾语时,通常要用which：She may be late， in which case we ought to wait for her。
她可能晚到，那样我们就要等等她.The documents for which they were searching have been recovered. 他们找寻的文件已找到了.This morning some port wine came，for which I have to thank you. 今天早上送来一些波尔图葡萄酒,为此我得向你道谢。
thatwhich用法的区别
thatwhich用法的区别1. that和which的区别that和which都可以用来引导定语从句，但是它们有一些不同点。
（1）先看一下that。
that一般用来引导限制性定语从句，表示必要条件，通常没有逗号与前面的句子分开。
例如：- The man that I met yesterday is very kind.（我昨天遇到的那个人非常友善。
）- The book that I borrowed from the library is very interesting.（我从图书馆借的那本书非常有趣。
）（2）然后再看一下which。
which一般用来引导非限制性定语从句，表示附加说明，通常用逗号与前面的句子分开。
例如：- My car, which is quite old, broke down on the way to work this morning.（今天早上去上班的路上，我的车，那辆非常旧的车，抛锚了。
）- The restaurant, which has been open for many years, serves excellent food.（这家餐厅已经开了很多年，它的食物非常棒。
）2. that和which的用法注意事项下面列举一些that和which用法的注意事项。
（1）在以下情况中，只能使用that而不能使用which：- 当先行词是人的名词时。
例如：The man that I met yesterday is very kind.- 当先行词被“最高级”等表示“唯一、无可替代”的语法单位修饰时。
例如：This is the best book that I have ever read.（2）在以下情况中，只能使用which而不能使用that：- 当定语从句中包含逗号时，只能使用which。
例如：My car, which is quite old, broke down on the way to work this morning.- 当先行词所在的从句不是主句的一部分时，只能使用which。
定语从句that和which的区别
定语从句that和which的区别定语从句that和which的区别关于定语从句that和which大家了解过多少呢？可能很多人都不是很清楚，下面就是店铺分享的定语从句that和which的区别，一起来看一下吧。
定语从句that和which的区别1在定语从句中，which 和that 在指代事物时，一般可以互换使用，但并非在任何情况下都是这样，这里介绍宜用that，而不宜用which 的情况。
①先行词为不定代词，all，much，something，everything，anything，nothing，none，the one等，1.We should do all that is useful to the people .2.There's nothing that can be said about it .3.Do you mean the one that was bought yesterday?②先行词被only， any， few， little， no， just， very， one of等词修饰时.1.The only thing that we could do was to wait.2.That's the very word that is wrongly used.The last place (that) we visited was the chemical works.You can take any (=whichever) seat that is free.I hope the little that I can will be of some help to them.比较 *This is one of the best novels that were published last year.*This is the only one of the best novels that was published last year.③先行词是序数词时或被序数词修饰时.1.When we talk about Wuxi， the first that comes into mind is Tai Lake.2.This is the third film that has been shown in our school thisterm.④先行词是最高级或被最高级修饰时.1.This is the best that can be done now.2.The most important thing that should be done right now is how to stop him from going on.⑤先行词既有人又有物，用which和who都不适合，这时宜用that. 如：1.The writer and his novel that you have just talked about is really well known .2.The rider and his bike that had run over an old woman were held up by the police.⑥被修饰词为数词时.1.Yesterday I caught two fish and put them in a basin of water .Now you can see the two that are still alive .⑦如果有两个从句，其中一个关系代词已用which ，另一个关系代词宜用that，以避免语言的单调或重复.Edison built up a factory which produced things that had never been seen before.⑧疑问词是who或which，关系代词宜用that，以避免重复.1. Which is the book that you like best?2. Who is the man that is standing at the gate?⑨主句是There be 结构，修饰其主句的定语从句宜用that 作关系代词. 如：1. There is still a seat in the corner that is still free.⑩被修饰成分为表语时，或者关系代词本身是定语从句的表语时，该关系代词宜用that .1. That's a good book that will help you a lot.2. My home village is no longer the place ( that ) it used to be .定语从句中宜用which而不宜用that 的情况:①当关系代词的前面有介词时.1.A zoo is a park in which many kinds of animals are kept for exhibition.2.Is this the room in which Mr. White lives?②在非限制性定语从句中.1.Crusoe's dog， which was are now very old， became ill and died .2.More and more people are beginning to learn English，which is becoming very popular in our country. (which指代主句)③在一个句子中有两个定语从句，其中一个定语从句的关系代词用了that，另一个宜用which .1. Let me show you the novel，that I borrowed from the library which was newly open to us.2. At the station I bought some magazines that might help me to pass the time on the train and which I could pass on to others when I finished them.④当关系代词后面带有插入语时.1. Here's the English grammar which， as I have told you，will help improve your English.⑤先行词本身是that，宜用which .What's that which she is looking at?⑥先行词是those+复数名词.A shop should keep a stock of those goods which sell best. 定语从句that和which的区别21. 当先行词为all，much，little，none及由any，every，some， no所构成的复合不定代词时。
that 和which的区别
其区别主要在于：1. 引导非限制性定语从句时，通常要用which。
如：She received an invitation from her boss, which came as a surprise. 她收到了老板的邀请，这是她意想不到的。
2. 直接放在介词后作宾语时，通常要用which。
如：The tool with which he is working is called a hammer. 他干活用的那个工具叫做锤子。
3. much, little, none, all, few, every(thing), any(thing), no(thing) 等时，通常用that。
如：There was little that the enemy could do but surrender. 敌人无法,只有投降了。
All [Everything] that can be done must be done. 凡能that can be done must be done.4. 当先行词有the very, the only, the same 等修饰时，通常用that。
如：This is the only example that I know. 我知道的例子只有这一个。
Those are the very words that he used. 那是他的原话。
5. 当先行词有形容词最高级或序数词(包括last, next等)等修饰时，通常用that。
如：。
如：This is the best dictionary that I’ve ever used. 这是我用过的最好的词典。
The first thing that you should do is to work out a plan. 你应该做的第一件事是订个计划。
6. 当关系代词在定语从句中用作表语时，通常用that。
如：China is not the country (that) it was. 中国已不是过去的中国了。
that和which的用法区别
that和which的用法区别that和which的用法区别：that可作代词、连词和副词，作为代词时，意为那个、那，作为连词时，用于某些动词、形容词和名词后，引出从句，作为副词时，意为那样、那么；which作为代词，意思有哪一个、…………的那些。
一、that的中文含义及用法介绍1、作为代词时，意为(指较远的人或事物)那，那个;(指已提到过或已知的人或事物)那，那个;(特指)那，那种，那些。
例句：That's a nice dress.那件连衣裙很漂亮。
What can I do about that?这事我可怎么办？Those present were in favour of change.在座的人都赞成变革。
2、作为连词时，用于某些动词、形容词和名词后，引出从句;(表示结果)如此……以至;(表示希望或愿望)多么。
例句：It's possible (that) he has not received the letter.可能他还没有收到那封信。
She was so tired (that) she couldn't think straight.她累得昏头昏脑。
3、作为副词时，意为(以手势表示长度、大小等时用)那样，那么;不很;不那么;(用以强调程度)那么。
例句：It's about that long.大约有那么长。
I was that scared I didn't know what to do.我非常害怕，以至不知如何是好。
二、which的中文含义及用法介绍which作为代词，含义为哪一个;哪一些;(明确所指的事物)……的那个，……的那些;(进一步提供有关某事物的信息)那个，那些。
例句：Which of the applicants has got the job?哪一位应聘者得到了这份工作？Houses which overlook the lake cost more.俯瞰湖泊的房子要价高些。
定语从句关系代词that和which的用法与区别
定语从句关系代词that 和which 的用法与区别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thatThat'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thatShe 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thatThe 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that5. 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thatThis is the same park that we once visited.6. 如主句以there be开头时,关系代词应用thatThere 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whichShe 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 whichI 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whichLarry 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whichA 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.。
that和which的用法区别顺口溜
that和which的用法区别顺口溜定语从句只用that口诀：先行不定代，the very/only/first，有高、序，some、all、much、few；指物人，有了which/who。
扩展资料定语从句只用that情况1.当先行词为anything，everything，nothing等不定代词时，只能使用“that”。
2.当先行词为all，any，much，many词时，只能使用“that”。
3.当先行词是形容词最高级或被形容词最高级修饰时，只能使用“that”。
4.当先行词是序数词修饰时，只能使用“that”。
5.先行词被the only，the very，the same，the last修饰时，只能使用“that”。
6.先行词里同时含有人或物时，只能使用“that”。
7.当主句是以who，which开头的.特殊疑问句或先行词是who时，只能使用“that”。
关系代词指代某物事时，只用that不用which的情况1.当先行词是everything，anything，nothing（something除外,用which或者that均可），all，none，few，little，some等不定代词时，或当先行词受every，any，all，some，no，little，few，much等词修饰时。
2.先行词被序数词或形容词最高级修饰时。
3.先行词被thevery，theonly，heright，thefirst，thelast等修饰时4.先行词前有thesame修饰时如果表示和先行词是同一物时用thesame…that…ThisisthesamepursethatIlostyesterday.这就是我昨天丢的那个钱夹。
如果表示与先行词同一类或相似的某物，则用thesame…as…ThisisthesamepurseasIlostyesterday.这个钱夹和我昨天丢的那个一样。
5.先行词是并列结构，既有人又有物时6.先行词为数词时Lookatthebooksonthebookshelf.Youcanseethetwothatyoub oughtmeformybirthday.7.避免重复原则，当先行词前面有who，which等疑问代词时。
which和that区别
that与which两者都可指物，常可互换。
其主要区别如下：1. 引导非限制性定语从句时，通常要用which：The current, which is very rapid, makes the river dangerous. 水流湍急，使这条河很危险。
He has to work on Sundays, which he doesn’t like. 他得在星期天工作，他是不喜欢这样的。
2. 直接放在介词后作宾语时，通常要用which：She may be late, in which case we ought to wait for her. 她可能晚到，那样我们就要等等她。
The documents for which they were searching have been recovered. 他们找寻的文件已找到了。
注：有时“介词+which”引导的定语从句可以转换成“介词+which+不定式”结构：He had only the long nights in which he could study. =He had only the long nights in which to study. 他只有漫漫长夜可用来学习。
3. 当先行词是下列不定代词或被它们修饰时much, little, none, all, few, every(thing), any(thing), no(thing) 等时，通常用that：All that she lacked was training. 她缺的只是训练。
Have you everything that you need? 你需要的东西都有了吗?The sleep ing man’s subconscious mind retained everything that was said around him. 这位酣睡的人头脑的下意识能记住他周围的人说的话。
在定语从句中that与which的区别与联系
在定语从句中that与which的区别与联系定语从句用来修饰名词，并且通常由关系词引导。
在英语中，that和which常用作定语从句的引导词，它们有区别和联系如下：区别：1. 引导词位置：that在定语从句中可以作为主语或宾语，通常不用逗号与主句连接；which通常作为主语或非限制性定语从句的引导词，前面使用逗号与主句分开。
例句：- I have a book that/which is very interesting. (that/which作主语) - We visited the Eiffel Tower, which is a famous landmark. (which 作非限制性定语从句的引导词)2. 表达限制性与非限制性从句的能力：that通常用于限制性定语从句，而which一般用于非限制性定语从句。
例句：- The book that I bought yesterday is really good. (that作限制性定语从句引导词)- My car, which is parked over there, needs to be fixed. (which作非限制性定语从句引导词)3. 非人称名词：that可以用于修饰人或物，而which一般用来修饰物，特别是在引导非限制性定语从句时。
例句：- The house that/which I live in is very old. (that/which都可用) - The car, which is parked over there, needs to be fixed. (which作非限制性定语从句引导词)联系：1. 引导词用法的选择：在某些情况下，that和which作为引导词在定语从句中可以互换使用，尤其是当句子仅有一个从句时。
例句：- I have a book that is very interesting. (that作引导词)- I have a book, which/that is very interesting. (which/that作引导词)2. 描述性从句：both that和which可以用于引导描述性定语从句，这种从句用来给出对先行词的描述或解释。
that和which的区别
that和which的区别：一.that仅用在限制性定语从句中，通常不用逗号隔开，作宾语或介词宾语时，that 可以省去。
例：The letter that came this morning is from my father.今晨收到的那封信是我父亲寄来的。
The watch(that)you gave me keeps perfect time.你给我的那块手表走得准极了。
The photographs(that) you're looking at were taken by my brother.你正看的这些相片是我弟弟照的。
二.which既可用在限制性定语从句中，作宾语或介词宾语时，which可以省去，也可用在非限制性定语从句中。
例：Did you see the letter that/which came today?今天来的信你看到了没有？This is the one of which I'm speaking./This is the one I'm speaking of.这就是我说的那一个。
He changed his mind, which made me angry.他改变了主意，使我很生气。
He admires Mrs.Brown, which surprises me.他钦佩布郎太太，这使我感到惊奇。
三.当先行词是不定代词或被它们修饰时，要用that，不用which，作宾语时可以省去。
例：All that can be done has been done.凡能做的事都已经做了。
You can't believe anything she says.她所说的什么话你都不能相信。
There's nothing you can do to help.你做什么也无能为力了。
I hope that the little that I've been able to do has been of some use.我希望我能够做到的那一点点是有些用处的。
which和that的区别
which和that的区别.txt如果你看到面前的阴影，别怕，那是因为你的背后有阳光！我允许你走进我的世界，但绝不允许你在我的世界里走来走去。
只能用that的情况：<1>关系代词在定语从句中作表语，不管是人或物只能用that。
He is not the man that he was when I first saw him.【他现在不是我第一次见他时那样的。
】<2>当先行词即指物又指人时，多用that引导定语从句。
Look at the girl and the dog that are crossing the street.【瞧正在过马路的那个女孩和那只狗。
】<3>当先行词是有生命的动物或人时，宜使用that而不是which。
1.What's the name of the animals that jumps about?【四处蹦跳的动物叫什么名字？】2.Who is the girl that talked to you yesterday?【昨天和你说话的女孩儿是谁？】<4>当先行词被形容词的最高级修饰时引导定语从句的关系代词只能用that，而不能用which。
This is the most interesting book that I've ever read.【这是我所读过的最有趣的书。
】<5>当先行词被all,something,anything,nothing,everything,little,much,the one,none 等时，引导定语从句多用关系代词that。
1.The goverment has promised to do all that lies in its power to alleviate the hardships of people.【政府承诺尽其一切力量减轻人民的苦难。
定语从句中的that和which的区别
定语从句which与that之区别首先，that和which在从句里都能够做宾语和主语，做宾语时能够省略。
在定语从句中,有种说法叫"关宾省",意思是关系代词在限制性定语从句中作宾语能够省略,不管是that，which，还是whom。
但是which能引导非限制性定语从句，that则不行。
其次，记得以下只能用that的几种情况：1. 当先行词为all, much, little, none及由any, every, some, no所构成的复合不定代词时。
如：We should do all that is useful to the people. 我们应该做一切有益于人民的事情。
Please tell me anything that you know about the matter. 相关此事，凡是你所知道的请告诉我。
2. 当先行词被any, few, little, no, all, much, some等词修饰时。
如：You can take any seat that is free. 任何空着的座位你都能够坐。
There is little work that is fit for you. 几乎没有适合你的工作。
3. 当先行词为序数词或被序数词所修饰时。
如：When people talk about the cities of China, the first that comes to my mind is Beijing. 人们谈论起中国的城市的时候，我首先想到的是北京。
This is the fourth film that has been shown in our school this term. 这是我们校本学期放映的第四部电影。
4. 当先行词为形容词最高级或被形容词最高级修饰时。
如：The best that I could do was to apologize. 我唯一能做的就是赔礼道歉了。
定语从句which和 that的用法区别
定语从句which和 that的用法区别定语从句which和that的用法区别定语从句是英语语法中常见的修饰成分，它可以在句子中作为形容词修饰名词或代词。
在定语从句中，which和that都可以引导从句，但是它们在使用上有一些区别。
本文将详细介绍which和that的用法区别。
一、用法区别：1. 引导非限定性定语从句：which非限定性定语从句是指对名词或代词进行额外的解释或补充，此时只能使用which引导从句。
非限定性定语从句通常使用逗号将其与主句隔开。
例如：The book, which is on the shelf, is mine.（这本书在书架上，是我的。
）2. 引导限定性定语从句：which和that限定性定语从句限定或限制了名词或代词的范围，这时既可以使用which，也可以使用that引导从句。
限定性定语从句通常不能省略，因为它对名词的意义起到了限定作用。
使用which或that时，意义上没有明显的区别。
但在口语中，通常更倾向于使用that。
例如：The book that/which I bought yesterday is very interesting.（我昨天买的那本书非常有趣。
）二、位置区别：1. 使用which引导的定语从句通常可以放在句首或句末，不会影响整个句子的结构。
例如：The car, which was parked outside, caught fire.（停在外面的那辆车着火了。
）The meeting, which will start at 9 o'clock, is important.（将在9点开始的会议很重要。
）2. 使用that引导的定语从句通常放在名词之后，对整个句子的结构有较强的影响。
例如：The book that I bought yesterday is very interesting.（我昨天买的那本书非常有趣。
）The house that Jack built is made of bricks.（杰克建造的那座房子是用砖砌成的。
定语从句which 和that的用法区别
定语从句which 和that的用法区别定语从句是英语中常用的修饰从句，用来对前面的名词或代词进行进一步的修饰和说明。
其中，which和that是两个常见的引导词，用来引导定语从句。
它们在用法上有一些不同之处。
本文将就which和that 的用法区别进行详细说明。
一、引导词的不同which和that都可以引导定语从句，但它们的用法存在一些区别。
一般说来，which引导的定语从句是非限制性定语从句，它对先行词进行进一步的解释或补充，不是必不可少的；而that引导的定语从句是限制性定语从句，它对先行词起到限制和具体化的作用，是必不可少的。
二、逗号的使用非限制性定语从句中，通常会使用逗号将其和主句隔开；而限制性定语从句中，不使用逗号与主句区分开。
例如：1. I have a dog, which is very cute.（非限制性定语从句）2. The dog that is barking is mine.（限制性定语从句）三、先行词的指代which引导的定语从句可以代指整个句子或前面的名词，而that引导的定语从句只能指代前面的名词。
使用which时，我们往往需要在前面加上逗号来与主句区分开。
例如：1. I have a dog, which is very cute.（which指代整个句子）2. The book that I borrowed from the library is very interesting.（that指代前面的名词book）四、形容词性物主代词的使用当定语从句中需要用到形容词性物主代词时，通常使用which引导的定语从句。
例如：1. This is my guitar, which is made of wood.（which引导的定语从句中使用形容词性物主代词my）2. This is the book that is mine.（that引导的定语从句中使用名词性物主代词mine）总结起来，which和that在定语从句的用法上存在以下区别：which 引导的定语从句是非限制性定语从句，一般使用逗号与主句区分开，可以代指整个句子或前面的名词，常用于形容词性物主代词的修饰；that引导的定语从句是限制性定语从句，不使用逗号与主句区分开，只能指代前面的名词。
定语从句which that 区别
that与which特定用法注意1 只宜于用which，不用that的情况。
(1)先行词为that，those时。
What’s that which is under the desk? 在桌子底下的那个是什么？(2)引导词（关系代词）前有介词时。
This is the room in which he lives. 这是他居住的房间。
注意2 只宜于用that，不用which的情况。
(1)先行词是形容词最高级或者它的前面有形容词最高级修饰时。
The film is the most interesting that I have ever seen. 这部电影是我看过的最有趣的一部。
English is the most difficult subject that you will learn during these years. 英语会是这些年你学的最难的科目。
(2)先行词是序数词或它的前面有last或序数词修饰时。
It’s t he first film that I saw this year. 这是我今年看的第一部电影。
Tom is always the first that comes to the classroom. Tom总是第一个到教室的人。
(3)主句以疑问词who，which开头时，不用which或who，以避免重复。
Which is the bike that you lost? 哪辆是你丢的自行车？(4)先行词既有人又有物时。
They are taiking about the sutdents and the school that they visited yesterday. 他们正在谈论昨天访问的学生和学校。
(5)先行词是all, much, little, something, everything, anything, nothing, none, the one等代词时。
定语从句中which和that的区别表格总结
定语从句中which和that的区别表格总结定语从句that与which区别如下：which与that在定语从句中被称为：关系代词。
which引导定语从句时，先行词是物，在从句中可做主语、宾语、表语。
that引导定语从句时，先行词既可以是人，也可以是物，在从句中也可做主语、宾语、表语。
关于which和that的常考点：一、在限制性定语从句中，只能用that不能用which的情况：1）当先行词是指物的不定代词。
例：Do you have anything that you want to say for yourself?2）当先行词前面有下列词修饰时：the only,the very,just,any,every,some等。
例：This is the very busy that I’m waiting for.3）当先行词是形容词的最高级或先行词的前面有形容词最高级修饰时。
例子：This is the best that has been used against pollution.4）当先行词是序数词或前面有序数词修饰时。
例：The train is the last that will go to Suzhou.5）当先行词既有人，又有物。
例：Do you know the things and persons that they are talking about?6）当主句的主语是疑问词who或which时。
例：which is the bike that you lost?Who is the boy that won the gold medal?7）主句是there be句型且关系词在从句中作主语时。
例：there is a seat in the corner that is still available.二、当先行词指物，定语从句中只能用which不用that的情况：1）在非限制性定语从句中，只能用which。
英语语法同义词辨析详解that which
英语语法同义词辨析详解that, whichthat，whichthat 和which 两个词都可以作关系代词，引导从句，在定语从句中作主语或宾语。
但两词在用法上存在着差异。
一、that多指物，有时也指人，而which只能指物，两词指物时在用法上大致相同。
例如：This is the irrigation system that (which) the peasants built last year. 这就是农民去年修的灌溉网。
I've read the newspaper that (which) carries the important editorial. 我已经看过登载那篇重要社论的报纸。
二、指物时，引导限定性定语从句用that或which，引导非限定性定语从句只能用which。
例如：Here is the book that (which) I told you about.这是我告诉过你的那本书。
Here is your book, which I have enjoyed very much.这是你的书，我很欣赏。
三、that作介词宾语时，介词不放在that之前，只能放在从句中原来的位置上，但which可以作介词的宾语。
例如：Can you lend me the book that you were talking about the other day ? 你可以把你那天谈的那本书借给我吗？Can you lend me the book about which you were talking the other day ? 你可以把你那天谈的那本书借给我吗？四、先行词被序数词、形容词最高级所修饰时，或者先行词为all、everything、nothing、something、anything、little时，必须用that，不能用which。
例如：That's all (that) I know.我知道的就是这些。
which和that的区别
只能用that的情况：<1>关系代词在定语从句中作表语，不管是人或物只能用that。
He is not the man that he was when I first saw him.【他现在不是我第一次见他时那样的。
】<2>当先行词即指物又指人时，多用that引导定语从句。
Look at the girl and the dog that are crossing the street.【瞧正在过马路的那个女孩和那只狗。
】<3>当先行词是有生命的动物或人时，宜使用that而不是which。
1.What's the name of the animals that jumps about?【四处蹦跳的动物叫什么名字？】2.Who is the girl that talked to you yesterday?【昨天和你说话的女孩儿是谁？】<4>当先行词被形容词的最高级修饰时引导定语从句的关系代词只能用that，而不能用which。
This is the most interesting book that I've ever read.【这是我所读过的最有趣的书。
】<5>当先行词被all,something,anything,nothing,everything,little,much,the one,none 等时，引导定语从句多用关系代词that。
1.The goverment has promised to do all that lies in its power to alleviate the hardships of people.【政府承诺尽其一切力量减轻人民的苦难。
】2.When we see anything that happen on the island, we're so glad.【当我们看到岛上发生的事情，我们都如此兴奋。
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that与which的用法区别两者都可指物，常可互换。
其区别主要在于：1.引导非限制性定语从句时，通常要用which：The current, which is very rapid, makes the river dangerous. 水流湍急，使这条河很危险。
He has to work on Sundays, which he doesn’t like. 他得在星期天工作，他是不喜欢这样的。
The London team, which played so well last season, has done badly this season. 伦敦队上一个季度打得很好，这个季度却打得很差。
2.直接放在介词后作宾语时，通常要用which：She may be late, in which case we ought to wait for her. 她可能晚到，那样我们就要等等她。
The documents for which they were searching have been recovered. 他们找寻的文件已找到了。
This morning some port wine came, for which I have to thank you. 今天早上送来一些波尔图葡萄酒，为此我得向你道谢。
注：有时“介词+which”引导的定语从句可以转换成“介词+which+不定式”结构：He had only the long nights in which he could study. =He had only the long nights in which to study. 他只有漫漫长夜可用来学习。
He had a couple of revolvers with which he could defend himself.= He had a couple of revolvers with which to defend himself. 他只有一两把手枪用来自卫。
3.当先行词是下列不定代词或被它们修饰时much, little, none, all, few, every(thing), any(thing), no(thing) 等时，通常用that：All that she lacked was training. 她缺的只是训练。
Have you everything that you need? 你需要的东西都有了吗?The sleeping man’s subconscious mind retained everything that was said around him. 这位酣睡的人头脑的下意识能记住他周围的人说的话。
She would never do anything that was not approved of by her parents. 她父母不赞同的事她绝不会做。
4.当先行词有the very, the only, the same 等修饰时，通常用that：This is the only example that I know. 我知道的例子只有这一个。
Those are the very words that he used. 那是他的原话。
5.当先行词有形容词最高级或序数词(包括last, next等)等修饰时，通常用that：This is the best dictionary that I’ve ever used. 这是我用过的最好的词典。
The first thing that you should do is to work out a plan. 你应该做的第一件事是订个计划。
6.当关系代词在定语从句中用作表语时，通常用that：China is not the country (that) it was. 中国已不是过去的中国了。
7.当先行词是一个既指人又指物的并列词组时，通常用that：They talked about the persons and things that most impressed them. 他们谈论了使他们印象最深的人和事。
8.当要避免重复时：Which is the course that we are to take? 我们选哪门课程？that与which的用法区别两者都可指物，常可互换。
其区别主要在于：1. 引导非限制性定语从句时，通常要用which：The current, which is very rapid, makes the river dangerous. 水流湍急，使这条河很危险。
He has to work on Sundays, which he doesn’t like. 他得在星期天工作，他是不喜欢这样的。
The London team, which played so well last season, has done badly this season. 伦敦队上一个季度打得很好，这个季度却打得很差。
2. 直接放在介词后作宾语时，通常要用which：She may be late, in which case we ought to wait for her. 她可能晚到，那样我们就要等等她。
The documents for which they were searching have been recovered. 他们找寻的文件已找到了。
This morning some port wine came, for which I have to thank you. 今天早上送来一些波尔图葡萄酒，为此我得向你道谢。
注：有时“介词+which”引导的定语从句可以转换成“介词+which+不定式”结构：He had only the long nights in which he could study. =He had only the long nig hts in which to study. 他只有漫漫长夜可用来学习。
He had a couple of revolvers with which he could defend himself.= He had a co uple of revolvers with which to defend himself. 他只有一两把手枪用来自卫。
3. 当先行词是下列不定代词或被它们修饰时much, little, none, all, few, every(thing), any(thing), no(thing) 等时，通常用that：All that she lacked was training. 她缺的只是训练。
Have you everything that you need? 你需要的东西都有了吗?The sleeping man’s subconscious mind retained everything that was said around him. 这位酣睡的人头脑的下意识能记住他周围的人说的话。
She would never do anything that was not approved of by her parents. 她父母不赞同的事她绝不会做。
4. 当先行词有the very, the only, the same 等修饰时，通常用that：This is the only example that I know. 我知道的例子只有这一个。
Those are the very words that he used. 那是他的原话。
5. 当先行词有形容词最高级或序数词(包括last, next等)等修饰时，通常用that：This is the best dictionary that I’ve ever used. 这是我用过的最好的词典。
The first thing that you should do is to work out a plan. 你应该做的第一件事是订个计划。
6. 当关系代词在定语从句中用作表语时，通常用that：China is not the country (that) it was. 中国已不是过去的中国了。
7. 当先行词是一个既指人又指物的并列词组时，通常用that：They talked about the persons and things that most impressed them. 他们谈论了使他们印象最深的人和事。
8. 当要避免重复时：Which is the course that we are to take? 我们选哪门课程？From: /grammar/dingyu/2011-07-15/149311.htmlthat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thatThat'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thatShe 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that5. 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thatThis is the same park that we once visited.6. 如主句以there be开头时,关系代词应用thatThere 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whichShe 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whichI 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 atthe 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whichA 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.。