高中英语人教版 (2019)必修 第一册Unit 4 Natural disasters示范课ppt课件

这是一份高中英语人教版 (2019)必修 第一册Unit 4 Natural disasters示范课ppt课件，共34页。PPT课件主要包含了thatwhich，who，that，which等内容，欢迎下载使用。

Unit 4 Natural Disasters Discvering Useful Structures
定语从句(Restrictive relative clauses)(Ⅰ)that, which, wh, whm, whse引导的定语从句【情境探究】
观察上面对话, 并完成句子1. The bk __________ he bught yesterday is very interesting. 他昨天买的那本书很有趣。2. D yu knw the by ____ just came in? 你认识那个刚刚进来的男孩吗?
3. He has mved int a huse ______________ face the sea.  他已经搬进了一个窗子朝向大海的房子。
whse windws
【要义详析】一、分类: 　　定语从句可以分为限制性定语从句和非限制性定语从句。
1. 限制性定语从句　　它是先行词在意义上不可缺少的定语,如果去掉, 主句的意思就不完整或失去意义。这种从句与主句的关系十分密切,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, 关系代词通常可以省略。
*Shanghai is a city (that) I’ve always wanted t visit. 上海是我一直想参观的城市。
2. 非限制性定语从句　　它只是对先行词作附加补充说明,如果去掉,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,书写时往往用逗号分开。非限制性定语从句不用that引导。
*The ld wman, wh lives n her wn, has a cat fr cmpany. 这个老妇人一个人住,养了一只猫陪伴她。
二、关系代词的用法定语从句的关系代词有that, which, wh, whm以及whse。*Hw d yu like the film which/that was shwn last Sunday? 你认为上周日上映的电影怎么样? (指物, 作主语)
*D yu knw the gentleman wh/that is sitting there? 你认识坐在那里的那位绅士吗? (指人, 作主语)*The man (wh /whm/that) yu’re talking t is my friend. 和你谈话的那个人是我朋友。(指人, 作宾语)
*The palace (which/that) I ften pay a visit t was built in the 17th century. 我经常去参观的那座宫殿建于17世纪。(指物,作宾语)*Children whse 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。(指人,作定语)
【名师点津】whse还是which　　关系代词在定语从句中作定语时,无论指人还是指物，都要用whse，而不能用which。*That’s the new machine whse parts are t small t be seen. 那是一台零件小到看不见的新机器。
*Have yu seen the film Titanic, whse leading actr is wrld-famus? 你看过《泰坦尼克号》这部电影吗? 它的男主角是世界著名的。
【知识延伸】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; 2.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——主语、宾语或定语。
【即学活用】用定语从句合并句子。(1)I live next dr t a cuple. Their children ften make a lt f nise. ________________________________________________________________________________________________
I live next dr t a cuple whse children ften make a lt f nise.  
(2)The man is frm Peking University. I talked abut the man at the meeting. _____________________________________________ _____________________________________________
The man (wh/whm/that) I talked abut at the meeting is frm Peking University.
(3)The by is sitting n the chair. The by is my brther. _______________________________________________
The by wh/that is sitting n the chair is my brther.  
(4)The city is near the sea. The city is very beautiful. _____________________________________________
The city which/that is near the sea is very beautiful.  
三、关系代词that与which的用法辨析1. 只用that而不用which 的情况(1)先行词有形容词最高级修饰时*Henry is the mst energetic yung man that I have ever cme acrss. 亨利是我见过的最有活力的年轻人。
(2)先行词有序数词修饰时*This is the third time that they have met. 这是他们第三次见面。
(3)先行词为all, much, few, little, everything, anything, nthing, nne 等不定代词,或被不定代词修饰时*Nthing that the teacher des desn’t influence his students. 老师所做的事情没有不影响到他的学生的。
(4)先行词既有人又有物时*He talked abut the schls and teachers that he had visited. 他谈论了他拜访过的学校和老师。
(5)先行词前面有the very, the nly, the last, the same等词修饰时*This is the very rm that I slept in that evening. 这正是我那天晚上睡觉的房间。*This is the nly thing that we can d nw. 这是我们现在唯一能做的事情。
【名师点津】the same. . . that/as的区别：the same. . . that表示“同一个”(同一性)the same. . . as表示“类似的一个, 而不是同一个” (相似性)*This is the same watch that I lst. 这就是我丢的那块手表。(同一个)
*I have bught the same watch as yu have. 我买了一块和你一样的手表。(相似的,非同一个)
(6)关系代词在限制性定语从句中作表语时*Our schl is n lnger the schl that it used t be. 我们的学校不再是以前的样子了。(7)句中其他位置已出现which，为避免重复，不用which而用that。*Which is the car that has vertaken us? 超过我们的是哪辆车?
2.只用which 而不用that 的情况(1)引导非限制性定语从句时*I brrwed the bk Sherlck Hlmes frm the library last week, which my classmates recmmended t me. 我上周从图书馆借了《夏洛克·福尔摩斯》这本书,这是我的同学推荐给我的。
(2)在定语从句中, 关系代词前有介词时*I was put in a psitin in which I had t accept I was less imprtant. 我被置于不得不接受我不重要的境地。
【名师点津】强调句与定语从句的区别*It was the student that/wh asked the silly questin. 就是这个学生问了这么一个愚蠢的问题。(强调句)*He was the student wh asked the silly questin. 他就是那个问了愚蠢问题的学生。(定语从句)
【即学活用】选词填空(that/which)(1)Finally, the thief handed everything ____ he had stlen t the plice. (2)Have yu any bks ____ are wrth reading? (3)This is the best film ____ I have ever seen.  
(4)I’m ging t talk abut the cuntries and peple ____ I have visited. (5)Bamb is hllw, ______ makes it very light.