怎么看是"非限定性定语'还是"限定性定语"

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怎么看是"非限定性定语'还是"限定性定语"
怎么看是"非限定性定语'还是"限定性定语"

怎么看是"非限定性定语'还是"限定性定语"
要用逗号个开的.
一、 非限制性定语从句通常不能用that引导.如:
1.I like the book,which was bought yesterday.我喜欢这本书,这是昨天买的.
2.I like the book which / that was bought yesterday.我喜欢昨天买的那本书.
二、 非限制性定语从句不能用why引导.要用for which代替why.如:
1.I had told them the reason,for which I didn't attend the meeting.我已经把理由告诉了他们,为此我没有去开会.
2.I had told them the reason why I didn't attend the meeting.我告诉了他们我不去开会的理由.(限制性定语从句“the reason why...”是常见搭配.)
三、 非限制性定语从句置于句首时,不能用which引导.关系代词as引导非限制性定语从句位置比较灵活,可以放主句前,也可以放主句后.如:
1.As I expected,he didn't believe me.正如我所预料的,他不相信我.
2.She heard a terrible noise,which brought her heart into her mouth.她听到一个可怕的声音,这让她把心都提到嗓子眼了.
四、 非限制性定语从句由“介词+关系代词”引导时,其中的关系代词不能用as.如:
1.He bought the car for more than $20,000,with which his father was angry.他花两万多美元买了这辆车,他父亲对此很生气.
2.I finished my work ahead of time,after which I sat some time reading the newspaper.我提前干完了我的活,随后我坐着看了一会儿报纸.
五、 在非限制性定语从句中,指人的关系代词作宾语时,只能用宾格whom; 不能用who替换,也不能省略.如:
1.Do you know Tom,whom we talked about?你认识汤姆吗?我们谈到过他.
2.This book,which you can get at any bookshop,will give you all the information you need.这本书会给你提供所有你需要的资料,它在任何一家书店都能买到.(非限制性定语从句中引导词在从句中作宾语,无论指人还是指物都不能省略.)

定语从句前有逗号和主句隔开的就是非限定性定语从句,否则就不是

很简单,看看如果把这个从句删除,整个主句的意义是否完整就行.

非限定性 有逗号