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1、Noun clauses as the subject,主语从句,基本概念,什么是主语,主语：句子说明的人或事物,一般位于_ 。,句首,I like English. The train left.,Jane is good at playing the piano. To see is to believe. Smoking is bad for health. What he has said is true.,找出主语,(名词),（不定式）,（动名词）,(从句）,主语从句 (Subject Clause),在句子中充当主语的就是 主语从句。,他通过了考试让老师很高兴。 He passed
2、 the exam. It made the teacher happy. He passed the exam made the teacher happy. That he passed the exam made the teacher happy.,理解主语从句,他何时要来还不清楚。 When will he come? It is not clear. When will he come is not clear. When he will come is not clear.,理解主语从句,That he will succeed is certain. Whether he wi
3、ll come makes no difference. What we need is more time.,找出主语从句,Tip:先找谓语,That he will come is certain. Whether he will come is uncertain.,引导词,1) 从属连词that和whether：,_不做成分，无意义，不能省略。 whether 不做成分，表“_”。,that,是否,Who will go makes no difference. What we need is more time. Which book I shall choose hasnt bee
4、n decided.,2) 连接代词who, what, which,引导词,Whoever comes is welcome. Whatever I have is yours. Whichever you want is yours.,3)连接代词whoever, whatever, whichever,引导词,whatever=anything that whoever=anyone who,When we will leave hasnt been decided. How she keeps healthy is a secret. Why he cries is not clear
5、. Where the meeting will be held is not known.,4) 连接副词when, where, how ,why,引导词,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,主语从句的特点：,It is certain that he will win the match.,That he will win the match is certain.,注解：一般来说主语从句
6、都是放在 , 但有时为了使句子 ,避免”头重脚轻”, 常用 作 ，从而把主语从句放在 ,句首,保持平衡,it,形式主语,后面,这样就构成了下面一些常用句型: 1) It is + n. +that It is a pity/shame that. 可惜的是 It is a surprise that 令人吃惊的是 It is a fact that 事实是 It is common knowledge that 是常识 *_(很可惜)we lost the match. *_(这是事实)he cheated in the exam.,It is a pity that,It is a fact
7、 that,1. 令人吃惊的是他改变了主意。 It is a surprise that he changed his mind. 2. 真可惜你错过了这么一个好机会。 It is a pity that you missed such a good chance. 3. 事实是我们周围的污染正变得越来越严重。 It is a fact that the pollution around us is becoming more and more serious.,2) It is + adj. +that Its certain that 肯定 It is possible/likely th
8、at. 很可能 It is obvious/clear that 很明显 It is true that的确 It is necessary important natural. that *_(很可能)she will come back tomorrow. *_(很明显) he is an English.,+(should) +do,It is possible that,It is obvious that,1. 很可能他会申请这项工作的。 It is likely that he will apply for the job. 2. 的确我犯了个错误。 It is true that
9、 I made a mistake. 3. 有必要我们要学习英语。 It is necessary that we should learn English.,3) It +不及物动词+that It happened that. 碰巧 It occurred to me that我突然想起 It appears/seems that 似乎，好像 It turned out that 原来 *_(刚好)I was out yesterday. *_(我突然想起)I forgot to sent the letter.,It happened that,It occurred to me tha
10、t,1. 好像是我错了。 It appears that I am wrong. 2. 碰巧他得去参加一个会议。 It happened that he had to attend a meeting. 3. 我突然想起他会说英语。 It occurs to me that he can speak English. 4. 原来他是Mary的朋友。 It turned out that he was Marys friend.,4) It + be +过去分词+从句 It is said that. 据说 It is known to all that. 众所周知 It is reported
11、 that. 据报道 It is believed that.据相信;人们相信 It is suggested that + (should）do. 建议 *_(据报道)20 people were killed in the accident. *_(建议)we should eat more vegetable and do more exercise.,It is reported that,It is suggested that,1.据说他已经去了上海。 Its said that he has gone to Shanghai. 2. 众所周知台湾是中国的一部分. It is kn
12、own to all that Taiwan is part of China. 3. 有人建议我们应该多做运动。 It is suggested that we should take more exercise.,主语从句的规律,例1.When will he come is not known.,规律一、主语从句一律用陈述语序， 即主语在前，谓语在后。,正：When he will come is not known.,例2. He will not come to the meeting this evening is true.,正：That he will not come to
13、the meeting this evening is true.,规律二、连词that 在从句中无实际意义， 但不能省略。,例3. If the meeting will be put off has not been decided yet.,正： Whether the meeting will be put off has not been decided yet.,规律三、whether 可以引导主语从句， 放在句首，但if不能,例4. When he will come are a puzzle.,正：When he will come is a puzzle.,规律四、主语从句的
14、谓语动词多用 单数第三人称形式。,When the meeting will begin _ (have) not been decided yet .,has,When they will start and where they will go _(be)still unknown.,When and where the meeting will begin _ (have) not been decided yet .,are,has,例5 1. What he needs _ that book. 2. What he needs _some books.,规律五、what 引导的主语
15、从句，可根据 表语决定主句动词的单复数形式。,is,are,小试牛刀,他是不是我的孩子仍然是个问题。,Whether he is my child remains a question.,What I like most is your hairstyle.,我最喜欢的是你的发型。,What I need is rest.,我需要的就是休息。,It is believed that the word diaosi reflects social problems.,据认为“屌丝”这个词反映了社会问题。,How Du Lala becomes successful depends on her hard work.,杜拉拉如何成功取决于她的勤奋。,What the boy did made the teacher angry.,这个男孩所做的事让老师很生气。,Whoever sees the girl is attracted by her.,任何见到这个女孩的人都被她吸引。,It is common knowledge that we should wear rain shoes on rainy days.,雨天要穿雨鞋
