内容正文:
Period Ⅴ 单元语法
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北师大英语·必修第三册
核心语法 专项突破
单元达标检测
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北师大英语·必修第三册
名词性从句
①It is obvious to the students that they should get well prepared for their future.
②He told me the news this morning that his father had come back.
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北师大英语·必修第三册
③It is years since he worked here, but his devotion to his work is what we often hear spoken of.
④She asked me whether I had returned the books to the library, and I admitted that I hadn't.
⑤The job will be offered to whoever the employers believe has previous experience as well as a strong sense of duty.
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北师大英语·必修第三册
[自我探究]
名词性从句包括主语从句、宾语从句、表语从句和同位语从句。以上例句中,其中 中that引导主语从句; 中that引导同位语从句; 中what引导表语从句; 中的whether和whoever引导宾语从句。
①
②
③
④⑤
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北师大英语·必修第三册
一、概念
所谓名词性从句,就是把完整句子当作名词来使用,使之在另一个句子中充当某种成分。一般来说,名词在句中主要充当4种成分:主语、宾语、表语和同位语,于是便有了常说的4种名词性从句:主语从句、宾语从句、表语从句和同位语从句。相当于名词作用的句子有3类:陈述句、一般疑问句和特殊疑问句。因此,名词性从句可简单概括为这样一句话:名词性从句就是用3种句子分别充当另外一个句子的4种句子成分。这便构成了名词性从句的本质特征。
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北师大英语·必修第三册
名词性从句的引导词 对应的句子类型 是否作成分
连词that 陈述句 that在从句中不作成分
连词whether/if 一般疑问句 whether和if在从句中不作成分
连接代词who,whom, what,which, whose;
连接副词
when, where,why, how 特殊
疑问句 who和what在从句中作主语、宾语或表语;whom在从句中作宾语;which在从句中作主语、宾语、表语或定语;whose在句中作定语。连接副词在从句中作状语
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北师大英语·必修第三册
二、用法
主语从句
1.that引导的主语从句
(1)that引导主语从句时,在从句中不作任何成分,也没有词汇意义,但一般不可省略。
*That the earth goes around the sun is known to us all.
众所周知,地球围着太阳转。
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北师大英语·必修第三册
(2)that引导主语从句时可用it作形式主语,that不可省略。常见句式主要有以下几种:
①It+be+形容词(necessary, right, likely, unlikely, wrong, important, certain, clear, obvious, strange, normal等)+that从句
*It isn't likely that I should accept such an offer as that.
我不可能接受像那样的帮助。
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北师大英语·必修第三册
②It+be+名词(短语)(a pity, a shame, good news, a fact, an honour, a wonder, no wonder等)+that从句
*It's no wonder that he didn't want to go.
难怪他不想去。
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北师大英语·必修第三册
③It+be+过去分词(said, told, heard, reported, decided, suggested, advised, ordered, remembered, thought, considered, requested, announced等)+that从句
*It is decided that t