基本概念定语:用于修饰名词或代词的成分就叫定语。 定语从句:如果修饰某个名词或代词的定语是一个完整的句子,这个句子就叫定语从句。定语从句所修饰的名词或代词叫先行词。定语从句放在先行词后面。定语从句的引导:定语从句的引导词代替的是先行词。
1、当定语从句所修饰的名词是事、物时,用that/which引导,且that/which在定语从句中作主语或宾语。e.g:a.Thisisthepenthat/whichIboughtyesterday.
2.当定语从句所修饰的名词是人时用that/who引导,引导词再从句中做主语或宾语。
3.定语从句修饰的\'名词时地点时用which/that或where引导:若地点名词在定语从句中是作主语或宾语就用that/which引导,是作地点状语则用where引导,可与“介词+which”互换。作visited的宾语作介词in的宾语作work的地点状语
4.当定语从句修饰的名词是时间名词时:若在定语从句中作主语或宾语用that/which,作时间状语则用when,同样可与“介词+which”互换。
5.当定语从句所修饰的名词在定语从句中表示原因时用why。’tcomeisstillamystery.
6.当定语从句修饰的名词和引导词后面的那个词之间是所有关系时,用whose引导。女儿已经出国的那个人是位医生
7.一些特殊情况:
当which引导的定语从句指代主句全部内容时,可以把which改为it,作形式主语,把原来的主句改成正在主语。或者把定语从句的整个信息改换为名词短语作主语,使原来的定语从句变成简单句。
例4: He indulges himself all day in computer games, which makes his parents extremely sad.
改为:It makes his parents extremely sad that he indulges himself all day in computer games.
他整天沉湎于电脑游戏,这使他父母伤心至极。(主语从句
或者:His indulgence in computer games all day makes his parents extremely sad. (名词短语
陈述句语序,就是主语在前,谓语动词在后。
错误: He is wondering when can he finish this difficult job.
正确: He is wondering when he can finish this difficult job.
注意:宾语从句的否定转移
主句的谓语动词是think,believe,imagine,suppose,consider,expect,fancy,guess等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致.例如; I don’t think he will come to my party.而不能说成I think he won’t come to my party.
1.主句是一般现在时,从句可以为各种时态。
2.主句是一般过去时,从句要用相应过去时态。
注意:从句描绘客观事实、真理、自然现象等,从句时态不受主句时态限制,仍用一般现在时。
例句:He answered that he was listening to me.
Father told me that practice makes perfect .
1.从句为陈述句,常选择引导词that,that引导宾语从句无意义,不充当句子成分常省略。例句:He told us (that they would help us through the whole work.
2.从句为一般疑问句,常选择引导词if或whether,表示“是否”。在whether … or not结构中不能用if替换。例句:I don’t know if there will be a bus any more.
3.从句为特殊疑问句,常选择what,when,where,which,who,how等的疑问代词、副词作引导词。例句:He didn’t tell me when we should meet again.
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