九年级英语上册unit9知识要点

九年级英语上册Unit9 I like music that I can dance to一、语法：定语从句Ⅰ、概念定语从句：就是在复合句里充当定语的从句，它通常紧靠在所修饰的名词或代词后面。

被定语从句修饰的名词或代词称为先行词。

引导定语从句的词叫关系词。

关系词有关系代词who, whom, whose, which和that等；关系副词有when, where, why等。

关系词不仅起连接作用，而且还代表先行词并在定语从句中担任某一句子成分，关系代词作主语、宾语、定语、表语等，关系副词作状语。

This is the book that my father bought me yesterday. 这就是我父亲昨天帮我买的那本书。

说明：句中修饰the book的that my father bought me yesterday就是定语从句；被定语从句所修饰的the book这是先行词；代表the book的关系代词that在定语从句中作bought的直接宾语。

The time when he arrives is not known. 他到达的时间还不知道。

说明：句中when he arrives是定语从句，被定语从句修饰的the time是先行词，关系副词when作时间状语。

Ⅱ、关系代词的一般用法：所谓关系代词，就是在定语从句中代替先行词在从句中充当成分（充当主语，宾语或表语）先行词是人，在从句中作主语用who，作宾语用whom或who，作定语用whose；先行词是物，在定语从句中作主语或宾语都用which，作定语用of which或whose均可。

在限制性定语从句中which, who, whom都可用that代替。

限定性定语从句：不能省略,如果省略整个句子意思不完整非限定性定语从句:可以省略,如果省略整个句子意思仍然完整（主句与从句用逗号隔开）This is the man who helped me yesterday. 这就是昨天帮助我的那个人。

(作主语)The teacher (who/whom/that) you want to see is coming. 你要见的老师来了。

(作see的宾语，可以省略)I met a boy whose father was a astronaut. 我认识一位男孩，他的父亲是宇航员。

(作定语)Here is the coat which/that will be made to you. 这是一件做给你的衣服。

（作主语）This is the factory (which/that) we visited last year.这就是我们去年参观的那家工厂。

(作visited的宾语，可以省略)He has a book whose cover (=the cover of which) is very beautiful. 他有一本封面非常漂亮的书。

Ⅲ、关系副词的用法：关系副词有when, where, why，在定语从句中作状语，分别表示时间、地点和原因。

when 的先行词通常是time, day, season, age, occasion等时间名词；where的先行词通常是place, city, town, village, house, case, situation, scenes等地点或情形名词；why的先行词只能是reason。

关系副词when和where有时可用“介词＋which”代替，，when = in/at/during + which，where = in/at/on/under + which 。

why可用for which代替。

如：There are occasions when (=on which) one must yield. 任何人都有不得不屈服的时候。

Beijing is the place where (=in which) I was born.北京是我的出生地。

Is this the reason why (=for which) he refused our offer?这就是他拒绝我们帮助他的理由吗？注意：先行词虽然是时间或地点，但若在定语从句中作主语或宾语时，要用关系代词。

(1)The factory where his father worked has closed. 他父亲曾工作的那家工厂关闭了。

(作状语)比较：The factory which/that was built in 1978 has closed. 1978年建的那家工厂关闭了。

(作主语)(2) I’ll never forget the days when we lived together. 我永远也忘不了我们一起生活的那些日子。

(作状语)比较：I’ll never forget the days that we spent in Australia. 我永远也忘不了我们在澳大利亚度过的那些日子。

(作及物动词spent的宾语)(3) The reason why she was ill was that she had eaten bad meat. 她生病的原因是她吃了变质的肉。

(作状语，用关系副词)比较：The reason that he gave for his absence was obviously fabricated.他所说的缺席理由显然是编造的。

(作gave的宾语，用关系代词)是用关系代词还是关系副词，首先要分析从句句子结构，看从句缺的什么：缺主语，宾语或是表语用关系代词；缺状语用关系副词。

Ⅳ、习惯上用that的定语从句：①先行词被序数词、形容词最高级以及前面Only, any, few, little, no, all, one of, the same, the very 等词修饰的时候This is the first film that I have seen since I came here.这是我到这里后所看的第一场电影。

This is the best that has been used against pollution. 这是用来防止污染的最好办法。

This is the very book that I am looking for. 这正是我一直在寻找的那本书。

The only thing that we can do is to give you some money.我们唯一能做的就是给你一些钱。

Li Ming is the only one that wants to be a teacher.李明是唯一一个想成为一名教师。

Those were the very words that he said at the meeting. 这些就是他在会上说的原话。

All that glitters is not gold. 闪光的并不都是金子。

②当先行词是指物的all, little, few, much, any, anything, everything, nothing, none, the one时All that can be done has been done. 能做的都已经做了。

He will tell you everything that he heard about it.他将告诉你他所听到的关于这件事的一切。

③先行词包括人和物时They often talk about the people and the things that they are interested in.他们常常谈论那些他们感兴趣的人和事。

④当主句是以who或which开头的疑问句时，为了避免重复，多用that引导。

如：Which is the house that caught fire last night? 昨晚失火的是那座房子？Who is the lady that is playing the piano? 在弹钢琴的那位小姐是谁？Ⅴ、习惯上不用that的定语从句：①关系代词前有介词时，一般用which或whom、whoseThe house in which we live is not large. 我们住的房子不大。

I know the young man with whom you live. 我认识和你住在一起的那个年青人。

但当介词放在从句的末尾时，可以用that替代which, who替代whom，也可以省略关系代词。

如：The house (which/that) we live in is not large. 我们住的房子不大。

I know the man (whom/who/that) you live with. 我认识和你住在一起的那个人。

②引导非限定性定语从句（主句与从句用逗号隔开）时Football, which is a very interesting game, is played all over the world.足球风靡全世界，它是一项很有趣的运动。

特别提示：做这样的题要看从句中缺什么成分：牢记：缺主语或宾语或表语用关系代词，缺状语用关系副词。

二、课文知识要点：1、I like music that I can dance to.我喜欢能随之跳舞的音乐。

dance to “伴随着……跳舞”；to 介词，意为“随着、伴随”。

to dance to the music of a rock group随着摇摆舞乐队的乐曲跳舞to dance to quiet music和着怡静的乐曲跳舞to dance to music按音乐节拍跳舞The girls dance to the beautiful music.女孩们随着优美的音乐翩翩起舞。

2、I prefer music that has great lyrics.我更喜欢歌词优美的音乐。

prefer 及物动词，意为“更喜欢”，相当于like…better，后接名词、代词。

prefer → preferring → preferred → prefer red【注意】：prefer 的过去式、过去分词和现在分词都要双写rWhich do you prefer，rice or bread？你更喜欢哪一样，米饭还是面包？Prefer的常见搭配：(1) prefer A to B=like …better than “比起B，更喜欢A ”He prefers English to math. 比起数学他更喜欢英语。

(2) Prefer (sb) to do sth. “更喜欢做某事”I prefer you to stay here a little longer.我更喜欢你在这里多呆一会儿。