一、非限制定语从句例句及讲解？
非限制性定语从句的作用是对所修饰的成分作进一步说明，通常和主句间用逗号隔开，将从句拿掉后其他部分仍可成立
1、 which引导的非限定性定语从句，可用来说明前面整个句子的情况或主句的某一部分。如：
She heard a terrible noise，which brought her heart into her mouth．
David studies hard and is ready to help others，which is what his parents expect．
2、 在非限制性定语从句中，不能用that，而用who, whom代表人，用which或as代表事物。关系代词作定语时用whose。如：
1、He loved his parents deeply, both of whom are very kind to him.
2、In the basket there are quite many apples, which have gone bad.
3、There are forty students in our class in all, most of whom are from big cities.
4、His mother, who loves him very much, is strict with him.
5、China, which was founded in 1949, is becoming more and more powerful.
二、限制性定语和非限定性定语的例句？
They bought a book which is written by Lu xun.限定性定语从句
They bought a book,which made their mum happy.非限定性定语从句
三、which引导的非限制性定语从句造句？
①
1、The two policemen were completely trusted，which in fact they were.那两个警察完全受到信任，事实上，也真是如此。
2、She was very patient towards the children，which her husband seldom was.她对孩子们很耐心，她丈夫却很少这样。
3、She is always careless，which we should not be.她总是马虎大意，我们可不应该这样。
②
1、These apple trees，which I planted three years ago，have not borne any fruit.
这些苹果树是我三年前栽的，还没有结过果实。
2、Water，which is a clear liquid，has many uses.
水是一种清澈的液体，有许多用途。
The old man has a son , who is in the army .
The sun heats the earth , which makes it possible for plants to grow .
非限定性定语从句在形式上就与主句很松散，它与主句之间有一个逗点"，"隔开；它对其先行词没有限定、修饰的作用，只起补充、说明的作用。有时也用它来对全句进行补充、说明。即使将其去掉，也不会影响句子意思。非限定性定语从句在中文译文里，往往将其作为一个分句处理，而不把它作定语翻译。
（此句中，非限定性定语从句是对全句进行补充、说明,将全句表达的意思看成"一件事情）。
太阳给予大地热，这就使植物的生长成为可能。
此句中，非限定性定语从句是对先行词son进行补充、说明。但本句所传达的信息是："这位老人只有一个儿子"
四、which引导的非限定性定语从句修饰整个句子？
1、Tom didn't keep his promise, which made his friend angry.
汤姆没有遵守诺言，这使他的朋友很生气。
关系代词which作从句的主语，指代整个主句。
2、The sun heats the earth , which makes it possible for plants to grow .
3、Bob slept in class, which made his teacher very disappointed.
鲍勃在课堂上睡着了，这使他的老师很失望。
五、非限定性定语从句的结构及造句？
非限定性定语从句是定语从句的一种,表示，定语从句和前面的词限定关系没有那么紧密，可以理解为一种补充说明，经常在非限定性定语从句前面加逗号儿，which可以代替先行词 ,也可以表示整句话比如说she left without saying anything which made me very worried.
非限制性定语从句用逗号与主句隔开。先行词可以是名词或代词，也可以是短语或句子。
类型成分指代:
1、指人
主语:Who定语: whose宾语:who,whom
2、指物
主/宾: which,as 定:whose
状语:When（时间），where（地点）
as，which引导非限定从:
① as引导非限定从时,as可取代整个组织内容。as可位于句首、句中、句尾,常有 " , "与主句隔开。（ as引导的非限定从应与主句意义一致，which无此限制）
② Which可指代整个主句内容,引导非限定从,位于句尾,句中。（从句为否定意义时,对主句内容起消极作用时,用which）
例句:
① The sports meet was put off,which astonished everybody.运动会取消了,这使每个人为之震惊。
② My house,which I bought last year,has got a lovely garden.我的房子有个漂亮的花园，这房子是我去年买的。
③ The children ,who wanted to play outdoors ,were taken to the playground.孩子们被带到操场去了，他们都想到室外玩耍。
④ The weather turned out to be very good, which was more than we could expect.天气变好了，这我们都没想到。
六、which引导非限制性定语从句指代整个句子？
是的，which引导非限制性定语从句指代整个句子。例如：
He set free the birds happily， which was a celebration for his success. 他开心地把鸟放了， 这是对他成功的一种庆祝。
把非限定性定语从句“which was a celebration for his success”的先行词视为主句中的“the birds”显然不符合整句的语境， 被“which was a celebration for his success”所修饰的是整个主句， which所引导的这类特殊的非限定性定语从句对主句所叙述的情况进行某种意义的补充说明， which常可译为“这一点， 这件事”。
同学，非限制性定语从句先行词可以是一个句子，也可以是一个词。
举例： 1. China is a beautiful country, which has a long history of 5000 year. 2. China is a beautiful country, which impresses American tourists most. 你可以好好体会体会这两句话的意思。
