Unit 6 Design Period Three Grammar 课件（北师大版必修2，课标通用）.ppt

重点语法精析 Unit 6 Design Period Three Grammar 课件（北师大版必修2，课标通用） 2．定语从句可分为限制性定语从句和非限制性定语从句两种。限制性定语从句所修饰的词代表一个(些)或一类特定的人或事物。这类从句不能去掉，否则意义不完整。在译成汉语时，这类从句一般也译成从句。非限制性定语从句则不然，它只对所修饰的词做进一步说明，去掉之后仍然成立。这类从句通常和句子的其他部分用逗号隔开，译为汉语时，从句可译成一个并列的句子。 二、定语从句的关系代词 1．限制性定语从句，如果修饰人，一般用关系代词who，有时用that。 Is he the man who/that wants to see you? 他就是想见你的人吗？(who/that在从句中作主语) A man who doesnt try to learn from others cant hope to achieve much. 一个不向别人学习的人是不能指望有什么成就的。 (1)如果这个关系代词在从句中作宾语，就应当用宾格whom或that，但在大多数情况下都可省略掉，在口语中可用who代替whom。 He is the man whom/that I saw yesterday. 他就是我昨天看见的那个人。(whom/that在从句中作宾语) He is the man(whom) youve been looking for. 他就是你一直在找的人。 There are some people here who I want you to meet. 这儿有些我想让你见的人。 (2)在介词之后只能用whom。 This is the man to whom I referred just now. 这就是我刚才提到的那个人。 Have you met the person about whom he was speaking? 他讲的那个人你见过吗？ (3)在口语中一般都把介词放到句子后部去，这时可用that，也可以省略。 The girl to whom I spoke is my cousin.＝The girl(who/that) I spoke to is my cousin. 刚才和我说话的那个女孩是我表妹。 2．限制性定语从句如果修饰“物”，用关系代词that，也可以用which。它们所代替的先行词是表示事物的名词或代词，在从句中可作主语、宾语等。 A period of prosperity which/that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣时期。(which/that在从句中作主语) The package (which/that)you are carrying is about to come unwrapped. 你拿的包快散了。(which/that在从句中作宾语) (1)当关系代词在从句中用作宾语时，口语中常常省略(尤其被修饰的词是all，everything等不定代词时)。 All you have to do is to press the button. 你只要把按钮一按就行了。 Thats the only thing we can do now. 那是现在我们能做的唯一的事情。 (2)在介词后只能用which，在口语中可以把介词放到从句之后，此时关系代词也可以省略。 This is the question about which weve had so much discussion.＝This is the question(which) weve had so much discussion about. 这就是我们讨论得那么多的问题。 3．在非限制性定语从句中，先行词指人的时候，关系代词只能是who，whom，不能用that；先行词指物的时候，关系代词只能用which，不能用that。 Charles Smith，who was my former teacher，retired last year. 查尔斯·史密斯去年退休了，他曾经是我的老师。 The house，which we bought last month，is very nice. 我们去年买的那幢房子很不错。 1．We live in an age________more information is available with greater ease than ever before. (2012·浙江) A．why B．when C．to when D．on which 解析　 考查