资源简介

(共24张PPT)
人教版（2019）必修第一册
Unit 4 Natural Disasters
Discovering Useful Structures
学习目标：
1. 熟悉生活中的定语和定语从句；
2、了解关系代词which，that，who，whom，whose和that；
3、学会使用关系代词；
a man doctor
some tall trees
a beautiful city
a sleeping student
the car which I bought yesterday
感受定语从句
1、我上周末看的电影
2、一些正在操场上打篮球的同学
3、地震中受困的人们
4、他们能找到的任何东西
5、God helps those who help themselves.
6、 He who laughs last laughs best.
感受定语从句
1、我上周末看的电影
2、一些正在操场上打篮球的同学
3、地震中受困的人们
4、他们能找到的任何东西
5、God helps those who help themselves.
6、He who laughs last laughs best.
定语从句三要素
被修饰的名词或代词
连接先行词和定语从句
修饰名词或代词的句子
例如：
This is the man (who saved my life when I was facing a fire).
先行词
关系词
定语从句
1. There were deep cracks that appeared in the well walls.
2. Two thirds of the people who lived there were dead or injured.
3. The number of people who were killed or badly injured in the quake was more than 400,000.
4. The army sent 150,000 soldiers to Tangshan to dig out those who were trapped.
5. Workers built shelters for survivors whose homes had been destroyed.
认识定语从句
学习定语从句
关系代词
关系代词：that ,which, who, whom, whose,as
人：that , who , whom
物：that , which
人和物： whose
引导定语从句的关系代词有三个作用：
1) 连接作用：引导从句，把从句和它所修饰的内容连接起来；
2) 替代作用：在从句中替代被从句所修饰的先行词；
3) 在从句中充当成分：作主语、宾语、定语。
先行词指人
定语从句不完整（汉语意思不完整或语法结构不完整）
先行词指物
who，whom
which
that, whose
我是谁？我在这里干什么？
Practice makes perfect！
1. It’s a book _________ introduces how to cook.
2. There are many volunteers _________ are helping the poor children.
3. This is the bike __________ my brother gave me for my birthday.
4. The girl _________ is standing under the tree is my little sister.
which
who
which
who
whose引导的定语从句
观察以下两个例句，并学习whose的用法：
Do you konw the boy whose father is a well-known doctor
The book whose cover is red is Gone with the Wind.
whose 引导的定语从句需满足以下两个条件：
1. 空格后有名词；
2. 先行词与该名词之间存在逻辑上的所属关系。
1. Here are some people__________ homes were destroyed by the typhoon.
2. The injured boy __________ mother was lost in the disaster was taken to the hospital.
3. The children _________parents couldn’t be found were looked after by neighbors and friends.
Practice makes perfect！
whose
whose
whose
使用关系代词的特殊情况
只用that不用which引导定语从句的情况：口诀：不代唯一序数问题最多
① 当先行词为everything, anything, nothing, all,none等不定代词时
The thief handed everything that he had stolen to the police.
当先行词被the only, the very ,the just,the same,few, little, no, all, every, the very等词修饰时
He is the very man that helped the girl out of the water.
② 当先行词同时包括人和物时。如： 多
They talked about the teachers and schools that they had visited.
③ 当先行词前有序数词first, last, next等或形容词的最高级修饰时。如：
This is the first article that I’ve written in Japanese.
④ 当主句是由who或which开头的疑问句时。
如：
Who is the man that is standing by Jack
使用关系代词的特殊情况
使用关系代词的特殊情况
1. Our parents will do all_______ they can do for us.
2. This is the best film _________ I have ever seen.
3. Is oxygen the only gas _________ helped fire burn
Practice makes perfect！
当先行词在定语从句中作宾语的时候，可以省略关系代词，如：
1. The book_____________ I bought yesterday is exciting.
2. I think the story_____________he is interested in is boring.
关系代词的特殊情况
1. The place _________ interested me most was the Children’s Palace.
2. That is the day __________ I’ll never forget.
3. The factory __________we’ll visit next week is not far from here.
4. I can’t forget the days ________ we spent together.
5. The letter is from my sister, _______ is working in Beijing.
6. Is there anyone ________ family is in Beijing in your class
Practice makes perfect！

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