定语从句什么时候可以省略that

如题所述

  定语从句中关系词的省略与不省略

  1.关系代词which,whom,who,that在定语从句中作宾语时可以省略.

  Here is the man (who/that/whom)you're been looking for.

  以下情况不能省略:

  (1)在介词+whom与介词+which中,whom,which不能省略.

  Do you know any shops nearby in which I can buy flowers?

  That is the headmaster with whom my father was talking just now.

  注:当介词放在动词后时,which,whom就可以省略.

  Who is the man (whom) you talked with just now?

  (2)在非限制性定语从句中,作宾语的关系代词也不能省略.

  Mr Green,whom you know,is the tallest in our school.

  The elephant is like a spear,as anybody can see.

  (3)在the same ...as,such...as,as...as,the same...that中,as,that即使作宾语,也不能省略I
have bought the same bicycle as you have (bought).(指同类用as)

  This is the same book that I read the day before yesterday.(that指同一个)

  (4)当由and,but,or等连词连接两个或两个以上的定语从句修饰一个先行词时,第一个关系代词可省,但第二,第三个不可省略.

  This is the book (which) I read yesterday and which I find very
interesting.

  2.当that在从句中作补语时可以省略.

  He is not the man (that) he used to be.

  She is all (that) a teacher should be.

  3.在there be 结构中出现定语从句,或在定语从句中出现there be 时,用作主语的关系代词也可省略.

  There is a man downstairs (who) wants to see you.

  This is the best dictionary (that) there is in the library.

  4.状语的省略

  (1)当先行词是reason,而且定语从句中作原因状语时,关系代词可用why,that,也可以省略.

  The reason (why/that) he failed was his laziness.

  That is the reason (why) I did it.

  (2)当先行词是way,且在定语从句中作方式状语时,关系代词可用in which,that,也可以省略.

  The way (in which/that) these comrades look at problems is wrong.

  That was the way (in which/that) she worked the problem out.

  注意:当关系代词在定语从句中作主语时,不省略.

  例如:I don't know the way that/ which leads to the top of the mountains.

  (3)当先行词是time时,关系代词可用when,that 或省略.

  The second time (that) I saw him was in 1980.

  I don't know the exact time (when/that) the sports meet will take
place.

  注意:关系代词作宾语有时也不能省略.
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第1个回答  2019-06-30
1,用作表语时
2,在定语从句与先行词之间有插入语时
3,用在there
be结构前作主语时
4引导限制性定语从句在从句中做宾语时
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