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1、 高考英语名词性从句学案概念与分类 名词性从句相当于名词，可分别在句中作主语、表语、宾语和同位语。因此，名词性从句可分为主语从句、表语从句、宾语从句和同位语从句。w.w.w.k.s.5.u.c.o.m 从属连词that：在从句中不充当任何成分，也没有任何意思，只起连接作用，因此往往可以省略从属连词if, whether：在从句中不充当任何成分，有意义，不可以省略连接代词who, whoever, whom, whomever, which, whichever, what, whatever, whose：在从句中充当成分，有意义，不可以省略连接副词where, when, why, how：
2、在从句中充当成分，有意义，不可以省略一、主语从句.由从属连词引导的主语从句：_is something we must discuss. 那个国高考资源网家是否应该建立核电站_is known to all .光以直线传播.由连接代词引导的主语从句：w.w.w.k.s.5.u.c.o.m _ more time. some books.我们所需要的是_ doesn_www .由连接副词引导的主语从句：_hasn_4.关于形式主语 it It + be +形容词+ that-从句 It is necessary that 有必要 It is important that 重要的是 It is o
3、bvious that 很明显 It is likely that.很可能It + be + -ed 分词+ that-从句 It is believed that人们相信 It is known to all that众所周知 It has been decided that 已决定 It + be +名词+ that-从句 It is common knowledge that 是常识 It is a surprise that 令人惊奇的是 It is a fact that 事实是 可应用于此句型的名词还有fact / shame / honor / question/pity等。 I
4、t +不及物动词+ that-分句 It appears that似乎 It happens that碰巧 It occurred to me that 我突然想起 It doesnt matter whether he likes or not. 二、表语从句可以接表语从句的连系动词有 be, look, remain, seem 等。The problem is_ caused by smoking.数百万人死于由抽烟引起的疾病The question remains_.我们是否能赢得这次比赛 Thats just what I want. 我想要的This is_. 我们的问题所在The
5、 difficulty is how we can help smokers kick their habit我们如何帮助吸烟的人值得注意的是：1. 表语从句的表现形式除了用从属连词，连接代词和连接副词引导以外，还可以由as, as if ，as though引导.Things were not as they seemed.It looks as if it is going to rain.好象要下雨了。2、另外还要注意以下常用的两种结构：The reason whyis that (而不用 because)It ( This, That ) is becauseThe reason _
6、he was dismissed is _ he didnt work hard. 他为什么被开除是因为他工作不努力。It is _ the tobacco companies want to remain in business.同时还要注意:（1）引导表语从句的that不省略, that仅起连接作用, 在从句中不充当任何成分, 无任何意义。The impression he makes on me is _ he is a reliable person.（2）the reason后面的表语从句只能用that引导, 我们学生易犯“the reason is because”的错误。The
7、reason_ the little actress has been such a success is _ she is both clever and hard-working. （3）在表示命令order等, 建议suggestion, advice等的名词后的表语从句中, 谓语动词要用虚拟语气： should+动词原形, should可省略His suggestion is that we _ hold another meeting to discuss the problem.（4）whether可引导表语从句, 表“是否”, 它在从句中不充当成分, if则不能。The ques
8、tion is _we can rely on him.（5）连接代词what, which, who, whom, whose除起连接作用外, 还在从句中做主语、宾语、表语和定语。Thats what he is worried about.（在从句作中作_）The problem is who can do the work.（在从句中作_）（6）连接副词when, where, why, how起连接作用外, 还在从句中作状语。Thats _I was late. That is _he did it.（7）连词because引导表语从句, 只用在 That/This/It is bec
9、ause结构中That is _ she often works hard.三、宾语从句一）引导词的选择 宾语从句的引导词除that只起连接作用外，其他的都有各自具体的意义。因此我们在选择引导词时，要把句型结构、句意及习惯搭配结合起来，做全盘考虑。请看下面的例句：Youll have to decide _ car well use, yours or mine Youll have to decide _ car well use, the old one or the new one Youll have to decide _well use the new car for Youll
10、have to decide _well use the new car Awhich Bwhat Cwhose Dwhether 再如：I still remember _ this used to be a small village另外，要特别注意：动词或动词短语check，make sure等作肯定句的谓语时，全句在汉语意义上虽有“是否”之意，但后面常用that作引导词。如： Check _ everything is in order，please 请核对一下是否一切正常。 Make sure _ the door is locked before you leave the lab
11、在离开实验室前，务必弄清门是否锁上了。 二）that的省略与否 that在口语中常省略。但在下列情况下，that一般不能省略： 1that从句置于句首以示强调或作简短回答时，如： That he has never seen such a thing I simply cant believe What do you assume from his attitude 你从他的态度推测到什么？ That he was frightened 他很害怕。 2及物动词所带的第二个及以后的宾语从句中。 He said_ Lesson 82 was important and _ he should le
12、arn it well 他说第82课重要，他应学好它。3that从句被短语、词组分开时。如： He told us once again _he would never give up 他再次告诉我们他决不会放弃。 4在复合宾语中。如： He made it clear_he wouldnt give us an answer 他表明他不会给我们答复的。 三）从句的谓语动词的形式 当主句时态为一般过去时时，宾语从句的时态一般受其影响，要用过去的相应时态。并且，此影响延伸至宾语从句中定语从句、状语从句等。如：He said he _ come if he_time 他说有时间他会来。 但下列两种情形例外： 1当宾语从句为客观真理或普遍事实时，只用一般现在时。如： The voyage proved that the earth is round 那次航海证实了地球是圆的。 2当主句谓语动词为suggest, insist, demand等时，其宾语从句常用should型的虚拟语气，谓语为（should）动词原形。如： He demanded that t
