Unit 4 Natural Disasters 定语从句 （ppt课件）-2023新人教版（2019）《高中英语》必修第一册.pptx

1、Unit 4 Natural Disaaters lead in 定语从句定语从句(Restrictive relative clauses)()that,which,who,whom,whose引导的定语从句引导的定语从句learning aims:1)To understand the concept and classification of attributive.2)To distinguish between restrictive and nonrestrictive relative clauses.1)Complete the following sentence 2)To

2、distinguish between restrictive and nonrestrictive relative clauses.3)Observe the use of relative pronouns.Self-learning guidance(8)定语从句的定义 首先我们先了解定语的概念1.定语从句起形容词的作用，在句中修饰一个名词或代词。2.定语从句分为限制性定语从句和非限制性定语从句。3.被修饰的词叫先行词；引导定语从句的词叫关系词，包括关系代词和关系副词。4.关系词的作用：连接主句或从句；在从句中担当成分。1.完成句子完成句子1.The book _ he bought

3、yesterday is very interesting.他昨天买的那本书很有趣。他昨天买的那本书很有趣。2.Do you know the boy _ just came in?你认识那个刚刚进来的男孩吗你认识那个刚刚进来的男孩吗?that/whichwho3.He has moved into a house _ face the sea.他已经搬进了一个窗子朝向大海的房子。他已经搬进了一个窗子朝向大海的房子。whose windows【要义详析要义详析】一、分类一、分类:定语从句可以分为限制性定语从句和非限制性定定语从句可以分为限制性定语从句和非限制性定语从句。语从句。1.限制性定语从

4、句限制性定语从句它是先行词在意义上不可缺少的定语它是先行词在意义上不可缺少的定语,如果去掉如果去掉,主句的意思就不完整或失去意义。这种从句与主句的主句的意思就不完整或失去意义。这种从句与主句的关系十分密切关系十分密切,书写时不可用逗号分开。如果关系代书写时不可用逗号分开。如果关系代词在限制性定语从句中作宾语词在限制性定语从句中作宾语,关系代词通常可以省关系代词通常可以省略。略。*Shanghai is a city (that)Ive always wanted to visit.上海是我一直想参观的城市。上海是我一直想参观的城市。2.非限制性定语从句非限制性定语从句它只是对先行词作附加补充说

5、明它只是对先行词作附加补充说明,如果去掉如果去掉,主句的意思仍主句的意思仍然清楚、完整。这种从句与主句的关系不是很密切然清楚、完整。这种从句与主句的关系不是很密切,书写时往书写时往往用逗号往用逗号分开。非限制性定语从句不用分开。非限制性定语从句不用that引导。引导。*The old woman,who lives on her own,has a cat for company.这个这个老妇人一个人住老妇人一个人住,养了一只猫陪伴她。养了一只猫陪伴她。二、关系代词的用法二、关系代词的用法定语从句的关系代词有定语从句的关系代词有that,which,who,whom以及以及whose。*How

6、 do you like the film which/that was shown last Sunday?你认为上周日上映的电影怎么样你认为上周日上映的电影怎么样?(指物指物,作主语作主语)*Do you know the gentleman who/that is sitting there?你认识坐在那里的那位绅士吗你认识坐在那里的那位绅士吗?(指人指人,作主语作主语)*The man(who/whom/that)youre talking to is my friend.和你谈话的那个人是我朋友。和你谈话的那个人是我朋友。(指人指人,作宾语作宾语)*The palace(which/

7、that)I often pay a visit to was built in the 17th century.我经常去参观的那座宫殿建于我经常去参观的那座宫殿建于17世纪。世纪。(指物指物,作宾语作宾语)*Children whose diet is high in fat will gain weight quickly.饮食富含高脂肪的孩子体重会增加很快。饮食富含高脂肪的孩子体重会增加很快。(指人指人,作定作定语语)【精讲点拨精讲点拨】whose 还是还是 which关系代词在定语从句中作定语关系代词在定语从句中作定语时时,无论无论指人还是指人还是指物，都要用指物，都要用whose，

8、而不能用，而不能用which。*Thats the new machine whose parts are too small to be seen.那是一台零件小到看不见的新机器。那是一台零件小到看不见的新机器。*Have you seen the film Titanic,whose leading actor is world-famous?你看过你看过泰坦尼克号泰坦尼克号这部电影吗这部电影吗?它的男主角是世界著它的男主角是世界著名的。名的。【知识延伸知识延伸】关系代词的用法与分类依据关系代词的用法与分类依据1.根据所引导的从句的限制性和非限制性根据所引导的从句的限制性和非限制性;2.根

9、据所替代的先行词是指人还是指物根据所替代的先行词是指人还是指物;3.根据它在从句中所充当的成分根据它在从句中所充当的成分主语、宾语或定主语、宾语或定语。语。【即学活用即学活用】用定语从句合并句子。用定语从句合并句子。(1)I live next door to a couple.Their children often make a lot of noise._I live next door to a couple whose children often make a lot of noise.(2)The man is from Peking University.I talked ab

10、out the man at the meeting._ _The man(who/whom/that)I talked about at the meeting is from Peking University.(3)The boy is sitting on the chair.The boy is my brother._The boy who/that is sitting on the chair is my brother.(4)The city is near the sea.The city is very beautiful._The city which/that is near the sea is very beautiful.Homework：1.review what you have learned 2.recited them and dictate them to hand in your group monitor 3.write your mistakes in relevant notebook 4.do all the rest exercises in class 5.do all the exercises in exercise book and if possible review next class