高中名词性从句教案（优秀）_高中名词性从句教案
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高中英语语法之名词性从句
在句子中起名词作用的句子叫名词性从句(Noun Clauses）。名词性从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。二.主语从句
1、作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如： What he wants to tell us is not clear.他要跟我们说什么，还不清楚。Who will win the match is still unknown.谁能赢得这场比赛还不得而知。
It is known to us how he became a writer.我们都知道他是如何成为一名作家的。
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行，还没有宣布。
另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should)+do”，常用的句型有：It is neceary(important, natural, strange, etc.)that …
It is suggested(requested, proposed, desired, etc.)that…
2、第一部分：常规主语从句，即句子在复合句中充当一个主语 主语从句的时态：不受主句的时态影响和限制。
（1）That he finished writing the composition in such a short time surprised us all.（2）Whether we will go for an outing tomorrow remains unknown.（3）Who will be our monitor hasn't been decided yet.小结:（1)引导主语从句连词有that,whether,who,what,whatever等（2)连词位于句首不能省略 第二部分：为了防止句子头重脚轻，通常把形式主语it放在主语位置，真正主语搁置于句末（1）It is certain that he will win the match.小结:（1)以that 引出的主语从句,常以形式主语it引导.It is +形容词/名词/某些动词ed + that 从句.（2)在有些that从句中要用虚拟语气(should+do/should+have done)例句4,5,6,11.3、主语从句的用法
主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。
用it 作形式主语的结构
(1)It is ＋名词＋从句
It is a fact that … 事实是…
It is an honor that …非常荣幸
It is common knowledge that …是常识
(2)it is ＋形容词＋从句
It is natural that… 很自然…
It is strange that… 奇怪的是…
(3)it ＋不及物动词＋从句
It seems that… 似乎…
It happened that… 碰巧…
(4)it is＋过去分词＋从句
It is reported that… 据报道…
It has been proved that… 已证实… 4.What 与that 在引导主语从句时的区别
What 引导主语从句时在从句中充当句子成分，如主语．宾语．表语，而that 则不然。例如： What you said yesterday is right.三、宾语从句
名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。1.宾语从句的连接词 从属连词：连接宾语从句的从属连词主要有that,if,whether.that引导表示陈述句的宾语从句,而if和whether引导表示“是否”的宾语从句.The reporter asked if the government would take neceary measures to put down the to-do.记者问政府是否会采取必要的措施镇压骚乱.如果从句是一个客观真理,那么从句的时态不根据主句的时态而变化 The teacher said that the moon goes around the earth yesterday.老师昨天说月亮绕着地球转.当宾语从句的引导词是who,which,what,when,where,how,why等表疑问时,不能按正常语序安排,经常将这类引导词置于句首
Who do you think the public might choose as their favorite singer this year?你认为今年公众会选谁为他们最喜欢的歌手.5.动词的宾语从句
大多数动词都可以带宾语从句
We all expect that they will win , for members of their team are stronger.我们都预料他们会赢,因为他们的队员更强壮.He told us that they would help us though the whole work.他告诉我们在整个工作中,他都会帮忙的.动词短语也可以带宾语从句
常见的这些词有:make sure确保 make up one’s mind下决心 keep in mind牢记 Make sure that there are no mistakes in your papers before you turn them in.在上交试卷前确保没有任何错误.6.宾语从句的否定转移
主句的谓语动词是think,believe,imagine,suppose,consider,espect,fancy,gue等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致.I don’t think he will come to my party.而不能说成I think he won’t come to my party.我认为他不会来我的舞会.I don’t believe that man is killed by Jim,is he?
我认为那个人不是Jim所杀的,是不是? 如果宾语从句中有某个含有否定意义的形容词或副词,其反义疑问句要用肯定形式.We find that he never listens to the teacher carefully,does he? 我们发现他从来不仔细听老师讲课,是不是?
四、表语从句
1、表语从句就是用一个句子作为表语。说明主语是什么或者怎么样，和连系动词一起构成谓语。其基本结构为：主语 + 系动词 + 从句。例如：
定义：A The problem is puzzling.这问题令人困惑 主语 连系动词 形容词作表语
The problem is when we can get a pay rise.问题是什么时候我们可以得到加薪.主语 连系动词 一个句子作表语---表语从句
2、连接表语从句的连接词有：that, what, who, when, where, which, why, whether,how, 有时用as if引导。He has become what he wanted to be ten years ago.他已经成为了他10年前想成为的。She has remained where I stood yesterday for an hour.她一直在我昨天站的地方站了一个小时。His suggestion is that we should stay calm.他的建议是，我们应该保持冷静。
The question is when he can arrive at the hotel.问题是，他什么时候可以到达酒店。
who will travel with me to Beijing tomorrow.谁与我明天将前往北京。
how I can persuade her to join us in the party.我怎么能说服她加入我们的派对。
whether the enemy is marching towards us.是否敌人正向我们行进.It looks as if it is going to rain.看上去天要下雨了。
【注意】1.当主语是reason时，表语从句要用that引导而不是because。例如：
The reason was that he was lazy.
