（英语）关于形容词性从句
除that外，都可用逗号隔开1. which引导的非限定性定语从句来说明前面整个句子的情况或主句的某一部分 ，that不能用于引导非限制性定语从句 例如: Her house,which was built a hundred years ago,stood still in the earthquake.(那座房子在地震中依然耸立，它是一百多年前建造的。
) 2. 有时as也可用作关系代词 3. 在非限定性定语从句中，用who, whom代表人，用which代表事物。
4.当先行词是专有名词或物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的。
5.非限制性定语从句还能将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数， 非限制性定语从句只是对主句内容，或先行词的补充、解释或附加说明。
主句与先行词或从句之间一般用逗号分开，常常单独翻译。
没有它，主句意思仍然完整。
引导非限制性定语从句的关系代词有as，which，who， whom，whose等，作定语从句的主语、宾语、表语及定语。
关系副词有when，where等，作定语从句的状语。
关系代词和关系副词在定语从句中一般不能省。
一、as引导非限制性定语从句时，可以代主句的全部或部分内容。
常表说话人关于说话的依据、态度、评论、看法等。
有“正如、像”等意思。
定语从句可以置主句句首、句中或句末。
as后常接expect，know，report，say，see等动词的主、被动语态句。
二、which引导非限制性定语从句的情况很多。
I．指代主句的全部或部分内容时，常表事实、状态、起因等，有“这就使得、这一点”等意思，常置主句末。
主句与定语从句用逗号分开。
II．指代先行词有多种情况。
定语从句置先行词后面。
1．在“n．／pron．／num．．．．＋prep．＋ which”，“prep．＋which”定语从句里。
2．表唯一性，或者就是指代先行词的事物时。
3．先行词是独一无二的事物时。
4．先行词表示类属的事物时。
5．先行词是专有名词时。
6．先行词是表人的职业、品质、身份等名词，作定语从句的表语时。
主句和定语从句之间含有对比的意思。
7．先行词是集体名词表整体意思时。
8．先行词是国家名词表地域概念时。
三、as，which是指代主句内容的非限制性定语从句时，表依据、评论与表事实、状态等没有多大差别，又在主句末时，有时可以通用。
在否定意义的非限制性定语从句里，一般用which引导。
四、who，whom，whose等引导非限制性定语从句时，指代人的普通名词、专有名词等。
表示正是或专指先行词等情况。
在定语从句中作主语、宾语、定语等。
有不会的可以再问我
法语中怎么判断句子是名词性从句还是形容词性从句
定语从句是形容词性从句,是用来修饰句子的,即在句中做定语,修饰一个名词或代词,被修饰的名词,词组或代词即先行词.定语从句通常出现在先行词之后,由关系词（关系代词或关系副词）引出.举个例子：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.括号内容是用来修饰the man.,即相当于一个形容词.而名词性从句分为主语从句、宾语从句、表语从句和同位语从句,下面简单举例eg:（Who will win the match） is still unknown.由who引导主语从句,作主语She will give （whoever needs help a warm support）由whoever引导宾语从句,作句子宾语That is （why he didn’t come to the meeting）由why引导表语从句,在句子中作表语I have no idea （when he will come back home.）由when引导同位语从句,在句子中作同位语,对idea作具体解释.
什么叫名词性从句.形容词性
名词性从句 在句子中起名词作用的句子叫名词从句 (Noun Clauses）。
名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。
形容词性从句--定语从句用来修饰名词,代词,句子等,在句中的作用相当于形容词,故称为形容词性从句.定语从句分为限制性定语从句和非限制性定语从句.限制性定语从句对被修饰词起到限制,修饰的作用,一般不可缺少.非限制性定语从句起补充,附带说明作用,缺少也不会影响全句的理解.e.g. She said she had finished her work, which I doubted very much.I've got some personal affairs that I have to deal with.定语从句常用关系词关系代词:who, whom, whose, that, which, as等(在句中作主,表,宾,定等成分)关系副词:where(on which), when(in which), why(for which)(在句中作状语)关联词:that(引导表示方式,时间的定语从句)e.g. In this earthquake, the number of people who lost homes reached as many as 250,000.I have many good friends to whom I am going to send postcards.You're the only person whose advice he might listen to.The river which runs through the center of the city brings us a lot of pleasure.He has given us as much advice as he can.Potato can be grown in places where it is too cold to grow rice.I don't like the way (that) you treat us.定语从句引导词的选择取决于先行词(被修饰词)在定语从句中的位置,成分.e.g. The people whom\\\\who\\\hat you met in the campus are from Australia.(作宾语)This was the time when\\\\at which she left for Beijing.The place which he often visits is always full of artists.使用要点1. 关系代词在从句中作主语时,不能省略.e.g. The classroom that is on the fourth floor is poorly equipped. 2. 关系代词在从句中作宾语且前面没有介词时,常可省略.e.g. This is the girl with whom he works.3. 关系副词在定语从句中不可省略.e.g. I have come to explain the reason why I was absent from the meeting.4. 只用that,不用which的情况:当先行词有序数词或形容词最高级修饰时;当先行词前有the only, the very, the last等词修饰时;当先行词为anything, nothing, something, everything, all, little, much等不定代词修饰时;当先行词前有all, every, no, some, any, little, much, few等词修饰时;It is 句型中的引导定语从句时.5. 只用which,不用that的情况:引导非限制性定语从句时;引导词前有介词时;一个句子中若有两个定语从句,一个用that引导,另一个用which引导;e.g. He bought a book that could give him much knowledge and which could help him to kill the time.6. 当those作为先行词指人时,通常只能用who引导;as 从句的先行词是the same, such, 或被他们所修饰;多用于表示肯定意义的从句中,不用于表否定意义的从句中.e.g. Many of the sports are the same as they were when they started.The result was not such as he expected.It was raining hard, which(as) was unexpected.8. 介词+关系代词要根据谓语动词的固定搭配 e.g. This is the evidence with which the case is connected.先行词 e.g. I'll never forget the day on which\\\\when I joined the party.c. 句子表达的意思 e.g. The boss in whose department Mr King worked got sacked.d. 在非限制性定语从句中,名词\\\\代词+of+which\\\\whom表示整体与部分的关系e.g. The workers, some of whom stayed for four years, came from different countries.e. 介词的位置一般放在关系代词之前,有时也可放在从句中原来的位置上.e.g. We did it in the same way in which he did\\\\which he did in. 9. That 作为关联词可以当作关系副词用e.g. This is the house in which Louis XIII lived.This is the house that Louis XIII lived.This is the house where Louis XIII lived.This is house which Louis XIII lived in.This is the house Louis XIII lived in. 定语从句的使用需注意:My brother who is very clever studies chemistry all by himself. 使用定语从句勿滥!可以使用单个形容词,或较短的非谓语动词结构的,尽量使用简略些的方式.使句子读起来更顺口!
