1、Unit4 Grammar 名词性从句之主语从句,展,示,目,1.了解并掌握主语从句的相关概念 2.完成与主语从句相关的练习 3.重点：It 做形式主语的各种句式及虚拟语气的使用。 4. 难点：引导主语从句的连接词的使用。,目标展示,身,导,入,热,找出下列各句的相似之处 What he did is surprising . 2. That we go swimming every day does us a lot of good. 3.When well finish translating the book depends on the time. 4.Whoever makes mi
2、stakes must correct them.,热身导入,主,学,习,自,主,Turn to page 53 in your workbook and see note 1，2. 学习任务： 1.了解主语从句的定义2.掌握引导主语从句的连接词的用法。,自主学习,定义：用作主语的从句叫主语从句，它是名词性从句之一。引导主语从句的连接词有： 连词that, whether； 连接代词who, what和which； 连接副词when, where, how和why。,自主学习,Continue to look at note 3. 1.连词that，whether在主语从句中做成分吗？ 2.连
3、词if 能引导主语从句吗？ 3.连接代词who, what和which在主语从句中能做什么成分？ 4.连接副词when, where, how和why在主语从句中能做什么成分？,自主学习,if可以引导主语从句,但不能用于句首,而应该放在句尾, 用it做形式主语. “whether“与“If“做“是否”讲引导名词从句, 区别如下: If 1.不能用在句首 2.不能引导主,表,同从句 3.可以引导宾语从句,但不用在介词之后,自主学习,知识小结,连接代词，也称疑问代词。一共九个,包括： who, whom, whose, what, which, whoever, whomever, whateve
4、r ，whichever, 代词相当于名词，因此，连接代词在主语从句中可做主宾表同。,自主学习,知识小结,作,探,究,合,1.他们是否卖掉这所房子还没有决定。_they will sell the house is not yet decided.这里能用if代替whether吗？为什么？if可以引导主语从句,但不能用于句首,而应放在句尾, 用it做形式主语.,汉译英,合作探究,2.凡是这里说的话都应当保密。 _ was said here must be kept secret. 3.凡犯了错误的人都必须改正。 _ makes mistakes must correct them.问题： 1
5、.whenever/wherever能引导主语从句吗？,合作探究,4.老师今天说的话是十分正确的。 _the teacher said today was quite right. 5.他们急需帮助，这是十分明显的。 _ they are badly in need of help is quite clear.,汉译英,合作探究,引导主语从句时，什么情况下用that，什么情况下用what？ 小提示： 由连词that引起的主语从句,这类句子在大多数情况下会放到整个句子的后部去，而用代词it作形式主语。,合作探究,主,学,习,自,主,Continue to look at note 4 1) I
6、t is + adj. / n. +从句 It is a pity/shame that. 遗憾的是 It is possible that. 很可能 It is unlikely that. 不可能 2) It +不及物动词+从句 It seems/appears that. 似乎 It happened that. 碰巧,自主学习,3) 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.据信;人们相信 It is su
7、ggested that. 有人建议,自主学习,Continue to look at 5 特殊强调: 用于It is +important / natural / necessary / impossible /或表示建议要求命令的词的过去分词+that.句型中, 主语从句应使用虚拟语气, 谓语动词用“should + 动词原形”的形式。,自主学习,馈,练,习,反,1. _ he said at the meeting astonished everybody present. 2. _ the 2000 Olympic Games will be held in Beijing is no
8、t known yet. 3. _ well go camping tomorrow depends on the weather. 4. _ leaves the room last ought to turn off the lights.,What,Whether,Whether,Whoever,反馈练习,6. _ is a fact that English is being accepted as an international language. 7.It worried her a bit _ her hair was turning grey. 8. The Foreign
9、Minister said, “_ is our hope that the two sides will work towards peace.” 9. After Yang Liwei succeeded in circling the earth, _ our astronauts desire to do is walking in space.,It,that,It,what,反馈练习,击,高,考,直,直击高考,1. （2011江苏卷）It was never clear _ the man hadnt reported the accident sooner. Athat Bhow
10、 Cwhen Dwhy,【解析】考查名词性从句。这里的it是形式主语，真正的主语是“ _ the man hadnt reported the accident sooner.”根据句意，原句要表达的是“为什么这个老人没有立马报案这件事还未查明。”所以正确答案为D。,直击高考,2.（2011湖南卷）Before a problem can be solved, it must be obvious _ the problem itself is.来 Awhat Bthat Cwhich Dwhy,【解析】考查名词性从句。主语从句缺少表语，故用what。句意：在解决问题之前，一定要弄清楚问题是什
11、么。,3.（2011北京卷） _ Barbara Jones offers to her fans is honesty and happiness. A. Which B. What C. That D. Whom,【解析】考查名词性从句。句意：这个惊人的消息使我意识到我们将面临多么严重的问题。结合句意可知答案为A，此处what引导的宾语从句是一个感叹句。,直击高考,4.（2011江西卷）The villagers have already known _ well do is to rebuild the bridge. A. this B. that C. what D. which,【
12、解析】考查宾语从句和主语从句。句意：村民们已经知道我们将要做的事情是重建这座桥。后面的宾语从句的主语从句中缺少主语且指物，所以选what。,直击高考,5.（2010北京卷） some people regard as a drawback is seen as a plus by many others. A. Whether B. What C. That D. How,【解析】考查主语从句。句意：一些人眼中的缺点是别人眼中的优点。从句中缺宾语，只能用B. what来引导； C.中的That引导主语从句不做成分。,直击高考,堂,小,结,noodles,课,Sum up the key points by yourselves.,课堂小结,置,作,业,布,Homework,1. Find out as many subject clause as possible in your text book. 2.Finish all the exercise in your work book.,布置作业,
