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1、名词性从句主语从句 Noun clauses as the subject【课前自主学习】Task 1 ：找出主语Jane is good at playing the piano.To see is to believe.Smoking is bad for health.What he has said is true.I like English.The train left. 主语：句子说明的人或事物,一般位于 。在句子中充当主语的就是主语从句。Task 2 ：理解主语从句 他通过了考试让老师很高兴。 He passed the exam.It made the teacher hap
2、py.He passed the exam made the teacher happy.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.主语从句-Task 3 ： 找出主语从句That he will succeed is certain.Whether he will come makes no difference.What we need is more time.Tip:先找谓语【 In class 课上探究 】Task 1 ： 引导词1) that 和 whether/
3、ifThat he will come is certain. Whether he will come is uncertain. 不做成分，无意义，不能省略。 whether /if 不做成分，表“”。Whether和if的区别：whether可放句首和句尾，if引导主语从句放句尾，前面 需用it作形式主语2) 连接代词 who, what, which Who will go makes no difference. What we need is more time.Which book I shall choose hasnt been decided3) 连接代词 whoever,
4、 whatever, whichever Whoever comes is welcome. Whatever I have is yours. Whichever you want is yours.whatever = anything that whoever = anyone who连接代词引导主语从句，在从句中可以作4）连接副词 when, where, how ,why When we will leave hasnt been decided. How she keeps healthy is a secret. Why he cries is not clear. Where
5、the meeting will be held is not known.连接副词引导主语从句在从句中作状语Task 2 ：it 作形式主语的结构That he will win the match is certain.It is certain that he will win the match.注解：一般来说主语从句都是放在,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.这样就构成了下面一些常用句型:1）It is + n. +thatIt is a pity/shame that. 可惜的是It is a surprise that.令人吃惊的是It is a
6、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.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
7、 and more serious.2）It is + adj. +thatIts certai n that. 肯定It is possible/likely that. 很可能It is obvious/clear that.很明显It is true that的确* It is n ecessary importa nt n atural. that.（很可能）she will come backtomorrow.（很明显） he is an English teacher.1. 很可能他会申请这项工作的。It is likely that he will apply for the j
8、ob.2. 的确我犯了个错误。It is true that 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+thatIt happened that.碰巧It occurred to me that.我突然想起It appears/seems that. 似乎，好像It tur ned out that.原来 （刚好）1 was out yesterday. （我突然想起） I forgot to sent the letter.1. 好像是我错了。It appea
9、rs 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 that. 据报道It is believed that.据相
10、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 shouldeat more vegetable and do more exercise.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 known 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 s
11、hould take more exercise.Task 3 ：主语从句的规律例 1.Whe n will he come is not known.正：.规律一、主语从句一律用陈述语序，即主语在前，谓语在后。例 2. He will not come to the meeting this evening is true.正：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： 规律三、whether可以引导主语从句，放在句首，但if不能例4. When he w
12、ill come are a puzzle.正：规律四、主语从句的谓语动词多用 单数第三人称形式。When the meeting will begin (have) not been decided yet .When they will start and where they will go (be) still unknown.When and where the meeting will begin (have) not been decided yet .例 5 1. What he needs _ that book.2. What he needs some books规律五、 what 引导的主语从句，可根据表语决定主句动词的单复数形式Task 4： 小试牛刀 我最喜欢的是你的发型。我需要的就是休息。杜拉拉如何成功取决于她的勤奋。这个男孩所做的事让老师很生气。Task 5: summary 主语从句的特点：1. 引导词：连词连接代词连接副词2. 语序：3:、 It 作形式主语的主语从句【After class :课后巩固复习】学预测P57页达标检测
