人教版（2019）选择性必修第一册 Unit1 People of achievement Learning about Language 非限制性定语从句 课件(共20张PPT）

(共20张PPT)
Unit 1 People of achievement
Learning about Language
定语从句
定语从句
定语从句是在句子中担任定语功能，修饰主句中的某一名词或代词的句子。被定语从句修饰的名词、代词称为先行词；引导定语从句的词称为关系词。关系词连接先行词与定语从句，并代替先行词在从句中作一定的句子成分，有关系代词和关系副词。
按照先行词的种类，把引导词分为五类：
人：
物：
时间：
地点：
原因：
who whom whose
which that whose
which that when
which that where
which that why
注意
as引导限制性定语从句的主要结构有:the same.....as;as......as; such......as;so......as。
主句中出现the same, as, such, so修饰先行词,需选择as做关系代词在定语从句中做主语或宾语。
例,It's the same person as we wanted to find yesterday.
注意
只用that不用which
当先行词是序数词、形容词最高级或被这二者所修饰时，关系代词用that
当先行词既有人又有物时，关系代词用that
当先行词被the only、the very、the same、the last、the one等修饰时，关系代词用that
当主句有who、或which时，为避免重复，关系代词用that
当先行词为something、anything、everything、nothing、none、little、few、all等不定代词时，或由every、all、any、some、much、few、no等不定代词修饰时，关系代词用that
非限制性定语从句
Non-restrictive Relative Clauses
非限制性定语从句的作用
非限制性定语从句只是对先行词的补充、解释或附加说明,即使去掉主句的意思仍然完整。它与主句之间一般用逗号分开,常常翻译成与主句并列的句子。
定语从句
限制性
定语从句
非限制性定语从句
They are dogs which are white
They are dogs, which are white
限制性
定语从句
I like dogs.
我喜欢狗子
I like dogs which are ugly.
我喜欢丑丑的狗子
范围变小
限制性
定语从句
The dog hugged mum who loves him.
狗子拥抱了那个爱他的妈妈
The dog hugged mum,who loves him.
狗子拥抱了妈妈，妈妈爱他。
范围不能被缩小
定语从句
限制性
定语从句
非限制性定语从句
缩小一个事物的表示范围
提供有关这个事物的附加信息
按照先行词的种类，把引导词分为五类：
人：
物：
时间：
地点：
原因：
who whom whose
which whose
which when
which where
which
1.as引导限制性定语从句的主要结构有:the same.....as;as......as; such......as;so......as。
主句中出现the same, as, such, so修饰先行词,需选择as做关系代词在定语从句中做主语或宾语。
例：It's the same person as we wanted to find yesterday.
2.as引导非限制性定语从句，指代整个主句内容，从句可置于句首、句中、句尾。
例: As everyone knows ,China is a beautiful country with a long history.
3.非限制性定语从句中的谓语动词为被动式时，常用as做主语。
例：be said/known/announced/reported/disscussed......
友情提醒
as 引导非限制性定语从句时,常用于下列一些固定结构中
as is expected
不出所料
as is mentioned above 正如上面所提到的
as we all know/as is known to all 众所周知
as is reported
正如所报道的
as is often the case 这是常有的事
as has been said before
如上所述
which as
位置上 指代整个主句 指代主句的一部分 句中 指代整个主句
句中、句首、句尾
搭配上 无动词的限制 多用于固定搭配中：
as is often the case 这是常有的事
as was expected 不出所料
as often happens 正如经常发生的那样
as is known to all 众所周知
as has been said before 如前所述
as is mentioned above 正如上面所提到的
意思上 意为“这一点；这件事” 表示“正如……，正像……的那样”
as与which引导非限制性定语从句时的区别
完成练习
1.I’m at an age _______ I don’t know what love is, but your sweet smile still touches me.
2.Thank you for your letter, _____ really made me happy.
3.According to the Guinness World Records the oldest man in the world is 111 years old, ______ now lives in Japan.
4.Fan Zhongyan was promoted to a high-level position, _______ he was able to advise the emperor on government policy.
5.There are many things in different areas ___________ we can do to reduce the possible dangers of AIDS.
when
which
who
where
that/which
6.____ is often the case with old people, my grandfather is fond of talking about good old days.
7.Understanding her good intentions, I eat all the food _____ is provided by Mom with appreciation.
8.In 1888 Gandhi sailed to England, _________ he studied law for three years and became a lawyer.
9._____ is typical of modern novels, the plot isn't very important, instead the emphasis is on how characters react to ordinary events.
10.EBay, Amazon and Wal-Mart are popular websites _______________ people can sell goods to each other.
As
that
where
As
where/on which
Discover useful structure
Para.2
Para.3
限制性定语从句与非限制性定语从句的区别
区别 限制性定语从句 非限制性定语从句
作用不同 说明的是先行词必不可少的情况,关系紧密，删除后影响整个主句意义的表达 对先行词进行补充说明，删除后不影响整个主句意义的表达。
形式不同 不用逗号分开 有逗号
先行词不同 只能是名词或代词 可以是名词或代词,也可以是整个主句或主句的一部分
关系词不同 可用that 不用that
翻译不同 译作定语，翻译为“......的......” 常译为并列的句子，译为“这，那”
Thank You