2023届全国新高考英语精准冲刺复习主语从句.pptx

2023届全国新高考英语精准冲刺复习主语从句 定义主语从句就是作主语的从句它的连接词有连词、连接副词、连词代词 例子比如：That she came to my birthday party?made me happy.她来参加我的生日晚会了，这让我很高兴。Where the English evening?will be held has not been announced.英语晚会将在哪里举行，还没有宣布。 用法主语从句放在句首时，句子显得很笨重，因此常用it作形式主语，而将真正的主语后置，比如：It?is a pity?that you have missed such a wonderful concert.真遗憾你错过了这么精彩的一场音乐会。温馨提示：在对符合句进行句型分析的时候，遇到从句的，先把从句当作一个句子成分先划出来，再对从句本身进行句型分析。 it 作形式主语有时为了考虑句子平衡，通常在主语从句处使用形式主语it，而将真正的主语从句移至句末。这分四种情况：(1) 对于以连词that引导的主语从句，通常用形式主语it替代主语从句。(2) 对于以连接代词(副词)引导的主语从句，可以使用形式主语代主语从句，也可直接在句首使用主语从句。(3) 对关系代词型what引导的主语从句，通常直接将主语从句放在句首。(4) 如果句子是疑问句，则必须用带形式主语it的结构。 用法连词that引导的主语从句，通常用形式主语it替代主语从句：It is +名词+从句。句型：It is a fact that… 事实是……；It is good news that … 是好消息；It is a question that … 是个问题；It is common knowledge that … 是常识类似的名词还有：a pity；a wonder；a good thing； no wonder； surprise等例如：it is no surprise 毫不惊奇地 例子It is a mystery to me how it all happened.这是怎么发生的，对我来说就是一个谜。It is common knowledge that the whale is not a fish.鲸鱼不是鱼，这是一个常识。It is no surprise that China is making progress on such fronts: the manufacture of large passenger aircraft and high-speed trains, research in yeast and aerospace.中国在很多尖端领域，如大飞机制造，高铁、干细胞、航天航空研究等领域取得飞速发展一点都不惊讶。 ?It is +形容词+从句It is necessary that …有必要……；It is clear that … 很清楚……；It is likely that … 很可能……；It is important that … 重要的是……类似的形容词还有：strange; natural; obvious; true; good; wonderful; possible; unlikely; quite; unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc. 例子It is doubtful whether she will be able to come.我们很怀疑她是否能来。It is essential that he should be here by the weekend.周末他务必要来这里。It seems obvious that we can not go on like this.很明显，我们不能再这样继续下去。It is necessary that you （should）master the computer.你必须要掌握电脑技术。 It is +过去分词+从句It is said that … 据说……；It is reported that … 据报道……；It has been proved that … 已证明……；It must be proved that… 必须指出……类似的过去分词还有：known; estimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; f