主语从句
高中英语知识点讲义
----主语从句
一、教学目标
1.知识目标：掌握主语从句的基本意义、形式，以及连接词的用法。
2.能力目标：会选定连接词，会运用主语从句进行口语或书面表达。
3. 情绪和态度目标：坚定学生学习英语语法的信心，从而激发学习英语语法的
学习兴趣。
二、教学重难点
1. 主语从句的连接词的选定。
2. 主语从句遵循的特点：陈述语气、缺什么补什么、不缺补that。
3. it做形式主语的情况。
三、教学步骤
1、首先，我们来看下面几个例子，请大家找出划线部分词语在句子中所做的成
分。
（1）Jeremy Lin is a basketball player.
（2）Smoking is bad for you.
（3）To find your way can be a problem.
（4）This is not funny at all.
2. 主语从句
（一）定义：顾名思义，用作主语的从句就叫做主语从句。
它是名词性从句的一种。
（注意：名词性从句分为：主语从句、表语从句、宾语从句和同位语从句。
）
（二）请看下面两个例子，大家便会对主语从句有一个初步概念。
A. The story makes me laugh. (词组)
B. That he failed the test makes me laugh.（从句）
（三）引导主语从句的连接词
连词：that/ whether
连接代词：who/ what/ which (在主语从句中做主语、宾语、表语、定语等) 连接副词：when/ where/ how/ why（在主语从句中做状语）
（即：7个wh-, 1个that, 1个how）
3. 连接词的用法
（一）that
That作为从属连词引导主语从句时，其本身没有实际意义，只起到引导作用，也不充当从句的任何成分，但不能省略。
如：That she left him made him heart-broken.
That you missed the film is really a pity.
注意：为了防止句子头重脚轻，通常把形式主语it放在主语位置，真正的主语搁置于末尾。
常用的句型有：
（1）It + 系动词 + adj. + that从句
常在此句式中的形容词有ture, certain, important, wonderful, funny, possible, natural, obvious, clear, strange, wrong, right, likely, probable等。
而且，此句式中主语从句的谓语动词常用“should+动词原形”的形式，其中should可省略。
如：It is obvious that the manager of the coffee shop was waiting for Li Fang to leave.
It is very important that a student(should) learn English well.
（2）It + 系动词 + 名词（词组）+ that从句
常用于此句式的名词（词组）有a pity, a shame, an honor, no wonder, a fact 等。
如：It is a pity that that you missed the film.
（3）It + be + 过去分词 + that从句
常用于此句式的过去分词有：said, reported, believed, thought, expected,
considered, announced, suggested, advised, required, proposed等。
如：It is suggested that the meeting be put off.
It is said that there is another good harvest this year.
（4）It + seems/ appears/ matters/ happens + that 从句
如：It seems that it is going to rain.
It appeared that he had a good time at the party.
（二）whether
Whether在引导主语从句时，虽然不做从句中的成分，但具有实在意义，不能省略。
如：Whether he will come or not is still a question.
It is still unknown if/ whether the plan will be carried out.
注意：（1）whether可以与or not 连用
（2）whether引导主语从句位于句首时，不可用if 替换。
（三）wh-疑问词及how既在从句中充当成分，又包含着特定的意思。
如：When/ Whether she will be back is still a question.
What you told me just now was really a surprise.
注意：从上述所有例子中我们可以看出，主语从句应使用陈述句语序。
4.如何选用连接词
（一）看句型，即：“it be/ 动词…句子”结构。
看到这样的句型，立即套用that, 然后还原语序，如果句子成立，那么就可以用that。
（2011年江苏卷26）It was never clear___ the man hadn’t reported the
accident sooner.
A. that
B. how
C. when
D. why
（二）看意思
如：whether意思为“是否”，“which”意思为“哪一个”。
（2007年湖北卷第37题）____ (他是否出过国) doesn’t make much difference. (he, abroad)
（三）分析句子成分
（1）看从句是否缺乏东西（主宾表），如果是，连接词选用
what(事、物)或者who（人）。
（2011年湖北卷第76题）____ (令球迷欣喜的) was that the young
player perfomed exteriorly well in the table tennis tournament. (delight) （2）如果句子成分齐全，那么考虑是否需要状语。
根据句子的意思确定
是需要时间、地点、原因、还是方式。
（when, where, why, how） (2008年湖北卷第33题) ___ （我成长的地方）is very hot and damp in summer. (grow)
（3）如果句子成分均已饱满，意思也完整，那么考虑使用that。
That the movie The Adventures of Tintins is to be on made me so excited.
四、课后习题
1. ____ suddenly occurred to him that his parents should have arrived in Beijing by this time.
A. What
B. It
C. That
D. As
2. ____ you don’t like him is none of my business.
A．What B. If C. That D. Whether
3. In some countries, ____ are called “public schools” are not owned by the state.
A. that
B. which
C. as
D. what
4. ____ we’ll go camping tomorrow depends on the weather.
A. If
B.Whether
C. That
D. Where
5. ____ makes mistakes must correct them.
A.What
B. That
C. Whoever
D. Whatever。