Learning about Language优秀教学设计

课题：

主语从句

教学目的、要求：1. 理解主语从句的概念，掌握其基本用法

2. 能熟练运用主语从句用法并独立完成练习

教学重点、难点：that, whether, what, how, who, why, where, which, when，whose, whom, what引导的主语从

的正确使用。

授课方法：

讲授法

教学参考及教具（含电教设备）：教材、练习册

板书设计或授课提纲：

主语从句

一、概述

二、四类主语从句

1. 由连词that引导

2. 用连词

whether 引导

3. 用连接代词引导

4. 用连接副词引导

三.注意点

教师活动

导入

讲解四类主语从句

举例

分析whoevevr 在句中作用

分析例句

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StepⅠ. Lead-in

概述：在句子中起名词作用的各种从句统称为名词性从句。根据它们在句中的语法作用，这类从句又可分为主语从句、同位语从句、表语从句和宾语从句。

StepⅡ.Presentation 一、主语从句主要有四类：

1. 由连词that引导的主语从句:引导词that无含义/在句中不做成分/不可以省。

例如：That you will win the medal seems unlikely.

主语从句

2. 用连词

whether 引导的主语从句:

whether有含义(是否)/在句中不做成分/不可以省。

注意：引导主语从句，不能用if，只能用whether。

例如：Whether we will hold a party in the open air tomorrow

主语从句

depends on the weather.

3. 在由连接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中，其连接代词在句中起名词性作用，担当一定成分. 例如：What you need is more practice.

主语从句

注：whatever / whoever的功用

whatever, whoever在主语从句中不含疑问意义。它引导主语从句，并在从句中作主语、宾语、表语等。

whatever = anything that; whoever = anyone who。要注意和whatever, whoever引导的让步状语从句的区别。

如：

Whoever breaks the law should be punished. （主语从句）

（

＝Anyone who breaks the law should be punished. ）

Whoever breaks the law, he should be punished. （让步状语从句）

（＝No matter who breaks the law, he should be punished. ）

4）用连接副词when, where, why, how引导的名词性从句(其连接副词有含义,在句中作状语。) 例如:Where we should leave it is a problem. 二、注意点: it构成的主语从句

学生活动

了解名词性从句的种类

分析句子结构

记笔记

比较两句例句的区别

教师活动

引导出it作形式主语的原因

分析区别

讲解

举例

给出练习题

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1. 由连词that引导的主语从句，在大多数情况下会放到句子的

后面，而用代词it作形式主语。

例如：That light travels in straight lines is known to all.

=

It is known to all that light travels in straight lines. 学生活动

记住不用it作形式主语的情况

记录it作形式主语的常用结构

分析例句

注：(但当what引导的主语从句表示“…的东西”时，一般不用it作形式主语。)

错:It is a book what he wants. 对:What he wants is a book.

另外，需要注意的是，it作形式主语代替主语从句时，要注意和as引导的定语从句的区别。试比较：

It was reported that the US was under the terrorist attack.

As was reported, the US was under the terrorist attack.

2. 常见用it作形式主语的复合句结构

It is +名词+从句

It is a fact that…

事实是……

It is good news that …

……是好消息

It is a question that …

……是个问题

It is common knowledge that …

……是常识

It is +形容词+从句

It is necessary that …

有必要……

It is clear that …

很清楚……

It is likely that …

很可能……

It is important that …

重要的是……

类似的形容词还有：strange; natural; obvious; true; good; wonderful; possible; unlikely; quite;

It is +过去分词+从句

It is said that …

据说……

It is reported that …

据报道……

It has been proved that …

已证明……

It must be proved that…

必须指出……

类似的过去分词还有：known; estimated; expected; believed; thought; hoped; noted; discussed; required;

It seems （happened / appears / doesn’t matter / makes no difference / occurred …）that …

如：It seems that they will win the game.

StepⅢ. 练习

1._____ as much as one-fifth of all timber harvested is not used. A. The estimate

B. The estimated

C. They are estimated

D. It is estimated that

教师活动

给出练习题

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学生活动

2. _____ we have achieved is attributed to the guidance of our

parents

A. Whoever

B. Whatever

C. However

D. That

完成练习

3. _____ she had forgotten to take her notebook.

A. That occurred to her

B. She occurred that

C. To her that occurred

D. It occurred to her that

课堂小结：

1.

名词性从句包括几种从句类型

2.

四类主语从句

3.

it作形式主语的情况

作业：书P126 1、3、31、34

教后札记：