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定语从句
由as, which 引导的非限定性定语从句,as和which可代整个主句,相当于and this或and that。As一般放在句首,which在句中。
  As we know, smoking is harmful to one's health.
  The sun heats the earth, which is very important to us.  
典型例题 
1)Alice received an invitation from her boss, ___came as a surprise.
A. it  B. that  C. which  D. he
  答案C. 此为非限定性从句,不能用 that修饰,而用whic
(06/10/2006 00:08:55) [查看全文]
1)介词后面的关系词不能省略。
2)that前不能有介词。
3) 某些在从句中充当时间,地点或原因状语的"介词+关系词"结构可以同关系副词when 和where 互换。
  This is the house in which I lived two years ago.
  This is the house where I lived two years ago.
  Do you remember the day on which you joined our club?
  Do you remember the day when you joined our club?
(06/10/2006 00:08:55) [查看全文]
1) 定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分,去掉它主句意思往往不明确;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的意思,它与主句之间通常用逗号分开,例如:
   This is the house which we bought last month.   这是我们上个月买的那幢房子。(限制性)
   The house, which we bought last month, is very nice.这幢房子很漂亮,是我们上个月买的。(非限制性)
2) 当先行词是专有名词或物主代词和指示代词所修饰时,其后的定语从句通常是非限制性的,例如:
   Charles Smith, who was my former
(06/10/2006 00:08:55) [查看全文]
方法一: 用关系代词,还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语,就必须要求用关系代词;而不及物动词则要求用关系副词。例如:
  This is the mountain village where I stayed last year.
  I'll never forget the days when I worked together with you.
判断改错(注:先显示题,再显示答案,横线;用不同的颜色表示出。)
  (错) This is the mountain village where I visited last year.
  (错) I will never forget the days when
(06/10/2006 00:08:55) [查看全文]
关系副词可代替的先行词是时间、地点或理由的名词,在从句中作状语。
1)when, where, why
  关系副词when, where, why的含义相当于"介词+ which"结构,因此常常和"介词+ which"结构交替使用,例如:
  There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。
  Beijing is the place where (in which) I was born. 北京是我的出生地。
  Is this the reason why (for which) he refused our offer? 这就是他拒绝我们帮助他的理由吗?
(06/10/2006 00:08:55) [查看全文]
 关系代词所代替的先行词是人或物的名词或代词,并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时,从句谓语动词的人称和数要和先行词保持一致。
1)who, whom, that
  这些词代替的先行词是人的名词或代词,在从句中所起作用如下:
  Is he the man who/that wants to see you?
他就是想见你的人吗?(who/that在从句中作主语)
  He is the man whom/ that I saw yesterday.
他就是我昨天见的那个人。(whom/that在从句中作宾语)
2) Whose 用来指人或物,(只用作定语, 若指物,它还可以同of which互换), 例如:
(06/10/2006 00:08:55) [查看全文]
定语从句(Attributive Clauses)在句中做定语,修饰一个名词或代词,被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后,由关系词(关系代词或关系副词)引出。
  关系代词有:who, whom, whose, that, which等。
  关系副词有:when, where, why等。
(06/10/2006 00:08:55) [查看全文]
1)不用that的情况
  a) 在引导非限定性定语从句时。
    (错) The tree, that is four hundred years old, is very famous here.
  b) 介词后不能用。
     We depend on the land from which we get our food.
     We depend on the land that/which we get our food from.
2) 只能用that作为定语从句的关系代词的情况
  a) 在there be 句型中,只用that,不用which。
  b) 在不定代词,如:anything, nothing,
(06/10/2006 00:08:50) [查看全文]
1)what = the thing which;whatever = anything
   What you want has been sent here.
   Whatever you want makes no difference to me.
2) who= the person that  whoever= anyone who
   (错)Who breaks the law will be punished.
   (错)Whoever robbed the bank is not clear.
   (对)Whoever breaks the law will be punished.
   (对)Who robbe
(06/10/2006 00:08:50) [查看全文]
1)Whoever spits in public will be punished here.
   (Whoever 可以用 anyone who 代替)
 2)The parents will use what they have to send their son to technical school.
  (what 可以用all that代替)
(06/10/2006 00:08:50) [查看全文]
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