Day 12 名词性从句-2022年暑假新高一【初高中衔接】必备英语知识抢先学(通用版)

2022年暑假新高一初高中衔接英语知识抢先学(通用版) 英语句法篇·名词性从句 一、主语从句 主语从句是在复合句中担任主语的句子。其特点有： （1）引导词： 从属连词 that, whether； 连接代词 who, what, which； whoever, whatever, whichever; 连接副词 when, where, how和why。 （2）语序：陈述句语序 （3）在主语从句中只能用whether，不能用if That he will win the match is certain. It is certain that he will win the match. 1. 一般来说主语从句都是放在句首，但有时为了使句子保持平衡，避免"头重脚轻"，常用it作形式主语，从而把主语从句放后面。常以it作形式主语的句型有： ①It is＋形容词＋that... It is certain that she will do well in her exam. 毫无疑问她考试成绩会很好。 ②It is＋名词词组(no wonder，an honour，a good thing，a pity，no surprise，common knowledge，a surprise， a fact，etc. )＋that... It’s a pity that we can’t go. 很遗憾我们不能去。 ③It is＋过去分词(said，reported，thought，expected，decided，announced，arranged，etc. )＋that... It has been suggested that much should be done to prevent the river from being polluted. 有人建议应做更多的工作阻止河流遭受污染。 ④It appears/seems that...|It happens that...|It occurred to me that...|It turned out that... It turned out that nobody remembered the