as引导定语从句及非限制性定语从句.ppt

as引导定语从句及非限制性定语从句
1.  He is not the same man as he was.
2.  Such girls as he knows are good at English .
have found such materials as are used in their factory.
the same + 名词 + as……..
the same + 名词 +that ……
像….一样的
就是同一人或物
This is the same bike as we lost yesterday.
This is the same bike that we lost yesterday.
3) as 引导的非限制性定语从句， 位置灵活，可位于句首，句中，句尾， as “正如，正像“
As everyone knows ,China is a beautiful country with a long history .
正如每个人都知道，中国是一个有着悠久历史的美丽国家。
  The earth , as we know , moves round the sun .地球，我们都知道，围着太阳转。
Tom works hard and is willing to help others, as we all ，并且乐于助人，这一点我们都知道。
常见的as 引导的非限制定语从句
as we all know
as is known
as every knows
as we (had) expected
as is mentioned above
注意：
as 引导的非限制性定语从句与which 引导的非限制性定语从句异同：
1）都可指代整个句子，但as 从句位置灵活，可位于句首，句中， 句尾， ”正如正像”
2） which 引导的从句只位于主句之后，意为“ 这一点”,主从句一般是因果关系
_____is known , the earth is round.
She was late again, ______ made the teacher angry.
As
which
The road was too slippery, ________caused lots of accidents.
She entered a good university, _____ we had expected.
which
as
二 非限制性定语从句
非限制性定语从句
先行词与从句间没有逗号隔开
先行词与从句之间有逗号隔开
先行词是名词或代词
先行词是名词，代词或前面整个句子（一般which指代整个句子）
关系代词，关系副词，介词+关系代词引导
不能用that 引导，一般不用why 引导而用for which 代替
限制性定语从句
关系词做宾语时可省
关系词做宾语时不可省
限定先行词
对现行词起补充说明作用
The man , who has three children, is my uncle.
那个人， 有三个孩子， 是我的叔叔。
The man who has three children is my uncle.
那有三个孩子的人是我的叔叔。
She was late again, which made the teacher upset.
This is my motorbike, which was sent to me by my uncle
The vase, whose price is a little high, is valuable.
The girl, to whom I talked just now , was the manager of that company.
The factory, where I worked , belonged to Japan.
The war, when/ during which Chinese fought against Japanese , last (持续）eight years.