非限制性定语从句(课堂PPT)
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11
as 引导非限制性从句，常意为“正如”。 可出现在句首、句中、句末。常见结构有：
• as is known to all
• as is often the case 这是常有的事
• as might / could be expected 正如人们所预料的
• as has been said before 正如前面所说的
堂
8. The manager’s daughter, _w_h__o_s_e_ name is Ann, 练
gave me a patient smile.
习6
▲ 在 of which / whom 之前可以使 用表达数量或定位的数词或代词
1. I am doing different types of exercises, all of _w_h_i_c_h_ are quite helpful to my health.
9
注意3: as / which 引导非限定性定语从句的区别
as 和 which 可指代整个主句
as 可放在句中或句首, which 只放在句中
• __A_s__ we know, smoking is harmful to one's health.
• The sun heats the earth, _w__h_ic_h_ is very
important to us.
10
关系代词as在定语从句中指代整件事， 充当句中的主语或者宾语，它经常和 the same, such, as一起搭配使用，共 同构成一个固定词组。
1. As we all know, he is a famous scientist.
2. As is expected, he is a diligent boy. 3. She has the same book as you have.
1
Teachers who are kind are popular with the students.
友善的老师受学生欢迎。 Mr. Wang, who is kind, is popular with the
students. 王老师很受学生欢迎，他很友善。
2
分析两种定语从句省略后的结果:
所以可以省略。 3
形式 作用
限制性 无 定语 逗号 从句
非限制 性定语
逗号 隔开
从句
修饰 限定
补充 解释
能否 省略 不能
能
翻译
…的
两个 句子
4
非限制性定语从句的用法
• 非限制性定语从句是先行词的附加说明, 去掉了也 不会影响主句意思, 它与主句之间通常用逗号分开。
• 引导“非限定”的关系词有：
1. 指人时：who, whom, whose
2. 指物时：which, as
which （可指某个词也可指整个主句，
从句只能位于主句之后）
as （表示正如，可位于主句前或主句后）
3. 指地点时：where = 相应介词 + which
4. 指时间时：when = 相应介词 + which
5. 指原因时：for which （切不可用why）
5
1. The famous basketball star, _w_h__o_ is an American,
Leabharlann Baidu
came to China yesterday.
2. In those days, she used to go to Mr. Black, with
_w_h_o_m__ she had a wonderful time.
2. Many people, some of _w_h_o_m___ are not overweight, are going on diets.
3. There are 54 students in my class, three of w_h_o_m____ come from US.
7
要点归纳 “非限定”使用须知
• Teachers who are kind are popular with the students.
• Mr. Wang, who is kind, is popular with
the students.
限制性定语从句 非限制性定语从
省略后主语所指 句省略后意义 仍
就不明确，
然完整，
所以不能省略。
be so busy.
6. The school, _w__h_e_r_e_ I once studied, was built thirty
years ago.
课
7. John said he’d been working in the office for an
hour, _w__h_i_c_h_ was true.
3. I bought a car yesterday, _w_h__ic_h_ cost me a lot.
4. Xi’an, w__h_i_c_h_ I visited last year, is a nice old city.
5. He will come to see me next July, _w__h_e_n__ he won’t
8
注意1：有时同一个限制性从句变为非限 制性从句会改变全句的意思。
1) I have a sister who works in a hospital.
我有一位在医院工作的姐姐。 （不只一位姐姐）
2) I have a sister, who works in a hospital.
我有一位姐姐，她在医院工作。 （只有一位姐姐）
• as has been mentioned above 正如上面所提到的
• as has been pointed out 正如所指出的
• as can be imagined
• as can be seen (from these figures)
1. 从句中所有的关系词都不可省略
2. 从句通常不能用that引导
3. 在“非限定”中, 指人的关系代词作宾语时, 只能 用宾格whom, 不能用who替换, 也不能省略。
4. 从句不能用why引导, 要用 for which 代替why 5. 从句置于句首时, 不能用which引导; 而要用关
系代词 as 引导 (as可放主句前, 也可放主句后)
as 引导非限制性从句，常意为“正如”。 可出现在句首、句中、句末。常见结构有：
• as is known to all
• as is often the case 这是常有的事
• as might / could be expected 正如人们所预料的
• as has been said before 正如前面所说的
堂
8. The manager’s daughter, _w_h__o_s_e_ name is Ann, 练
gave me a patient smile.
习6
▲ 在 of which / whom 之前可以使 用表达数量或定位的数词或代词
1. I am doing different types of exercises, all of _w_h_i_c_h_ are quite helpful to my health.
9
注意3: as / which 引导非限定性定语从句的区别
as 和 which 可指代整个主句
as 可放在句中或句首, which 只放在句中
• __A_s__ we know, smoking is harmful to one's health.
• The sun heats the earth, _w__h_ic_h_ is very
important to us.
10
关系代词as在定语从句中指代整件事， 充当句中的主语或者宾语，它经常和 the same, such, as一起搭配使用，共 同构成一个固定词组。
1. As we all know, he is a famous scientist.
2. As is expected, he is a diligent boy. 3. She has the same book as you have.
1
Teachers who are kind are popular with the students.
友善的老师受学生欢迎。 Mr. Wang, who is kind, is popular with the
students. 王老师很受学生欢迎，他很友善。
2
分析两种定语从句省略后的结果:
所以可以省略。 3
形式 作用
限制性 无 定语 逗号 从句
非限制 性定语
逗号 隔开
从句
修饰 限定
补充 解释
能否 省略 不能
能
翻译
…的
两个 句子
4
非限制性定语从句的用法
• 非限制性定语从句是先行词的附加说明, 去掉了也 不会影响主句意思, 它与主句之间通常用逗号分开。
• 引导“非限定”的关系词有：
1. 指人时：who, whom, whose
2. 指物时：which, as
which （可指某个词也可指整个主句，
从句只能位于主句之后）
as （表示正如，可位于主句前或主句后）
3. 指地点时：where = 相应介词 + which
4. 指时间时：when = 相应介词 + which
5. 指原因时：for which （切不可用why）
5
1. The famous basketball star, _w_h__o_ is an American,
Leabharlann Baidu
came to China yesterday.
2. In those days, she used to go to Mr. Black, with
_w_h_o_m__ she had a wonderful time.
2. Many people, some of _w_h_o_m___ are not overweight, are going on diets.
3. There are 54 students in my class, three of w_h_o_m____ come from US.
7
要点归纳 “非限定”使用须知
• Teachers who are kind are popular with the students.
• Mr. Wang, who is kind, is popular with
the students.
限制性定语从句 非限制性定语从
省略后主语所指 句省略后意义 仍
就不明确，
然完整，
所以不能省略。
be so busy.
6. The school, _w__h_e_r_e_ I once studied, was built thirty
years ago.
课
7. John said he’d been working in the office for an
hour, _w__h_i_c_h_ was true.
3. I bought a car yesterday, _w_h__ic_h_ cost me a lot.
4. Xi’an, w__h_i_c_h_ I visited last year, is a nice old city.
5. He will come to see me next July, _w__h_e_n__ he won’t
8
注意1：有时同一个限制性从句变为非限 制性从句会改变全句的意思。
1) I have a sister who works in a hospital.
我有一位在医院工作的姐姐。 （不只一位姐姐）
2) I have a sister, who works in a hospital.
我有一位姐姐，她在医院工作。 （只有一位姐姐）
• as has been mentioned above 正如上面所提到的
• as has been pointed out 正如所指出的
• as can be imagined
• as can be seen (from these figures)
1. 从句中所有的关系词都不可省略
2. 从句通常不能用that引导
3. 在“非限定”中, 指人的关系代词作宾语时, 只能 用宾格whom, 不能用who替换, 也不能省略。
4. 从句不能用why引导, 要用 for which 代替why 5. 从句置于句首时, 不能用which引导; 而要用关
系代词 as 引导 (as可放主句前, 也可放主句后)