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名词性从句学习中的易错点总结

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在学习名词性从句之前,我们首先要明白一个词:复合句什么叫复合句     由一个主句和一个或一个以上的从句构成的句子叫复合句。在复合句中主句是全句的主体,从句是全句的一个成分,不能独立。从句通常是用关联词来引导的。在这里关联词还起联系从句和主句的作用。 一、从句的种类:     主语从句、宾语从句、表语从句、同位语从句,定语从句和状语从句二、名词性从句的连接词1. 单纯连词在从句中不补充当任何成分,只起到连接从句的功能。that 没有实际意义,而whether/ if 在句子中表示“是否” 的意义。Eg : That the prices of rice will go up is certain. (that引导主语从句,补充当任何成分)       He asked if I could come to see him this weekend.     形式主语it 代替主语从句位于句首时,常见的几种情况:
     ① It + adj +that 从句(大多数情况下that从句后用should+动词原形)      Adj: necessary  right  clear  unlikely  strange  obvious  natural  important      Eg: It is necessary to learn English well.      ② It +系动词+名词+that 从句      Non: a pity  an honor  good news  a wonder  a fact  no wonder  no surpeise      Eg: It is a fact that you are a good boy.      ③ It +be + 过去分词+that从句      过去分词:said / heard/ reported/ told/ decided/suggested/thought/considered/ hoped/ announced       Eg: It is announced that the plan has been canceled.     注意:     It + be+ suggested/ advised/ ordered/ requested/ insisted/ demand+ that从句, that从句要用should +动词原形,should可以省略。     Eg: It is suggested that you (should ) spend more time in studying English .     当suggest表示“表明”时,不可以用虚拟语气     Eg: It suggests that you are an honest boy.     Insist 表示“坚持某种说法(事情已经发生过了)”,不用虚拟语气。     表示“坚持要做(事情没有发生)”,要用虚拟语气。     Eg: she insisted that I have never done such thing .           She insisted that I study abroad.     ④It +动词(+宾语或状语)+that 从句     动词如: appear(显得)/ happen(碰巧)/ matter(重要)/ occur(出现)/ turn out(结果是)     Eg: It happened to me that I was away when he came.主语从句不可位于句首的五种情况:     注意:     (1)if 引导的主语从句不可居于复合句句首。     (2)It is said /reported?结构中的主语从句不可提前。       正确表达:It is said that President Jiang will visit our school next week.       错误表达:That President Jiang will visit our school next week is said.     (3)It happens/occurs?结构中的主语从句不可提前。       正确表达:It occurred to him that he failed in the examination.      错误表达:That he failed in the examination occurred to him.     (4)It doesn’t matter how/whether ?结构中的主语从句不可提前。       正确表达:It doesn’t matter whether he is wrong or not.       错误表达:Whether he is wrong or not doesn’t matter.     (5)含主语从句的复合句是疑问句时,主语从句不可提前。       正确表达:Is it likely that it will rain in the evening?      错误表达:Is that will rain in the evening likely?

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