宾语从句公开课教案

公开课教案

执教人：撒拉溪中学周礼秀

2014年9月17日The teaching contents(教学内容)：Object Clauses(宾语从句)

The teaching goals(教学目标)：

1. 掌握宾语从句的慨念，构成和用法.

2. 掌握宾语从句的三类引导词

3. 掌握宾语从句的时态变化

4. 掌握宾语从句的语序

The teaching important points(教学重点)

1.宾语从句的慨念

2.宾语从句的引导词

3.宾语从句的语序

4.宾语从句的时态变化

The teaching difficult points(教学难点)

1.宾语从句的时态变化

2.if和wether的区别

3. when与if的用法

The teaching process(教学过程)

Step 1.Lead-in

复习书上的内容导入新课（P9）, (叫学生划分这些句子的成分,引出该堂课的教学内容——宾语从句)

Step 2. Presentaion

一.概念：置于动词、介词等词性后面起宾语作用的从句叫宾语从句。如：, He said he was good at drawing. (动词宾语)

He began to think about what he should do. 他开始考虑应当怎样做。(介词宾语)。

（此外，除了谓语动词、介词能带宾语从句外，动词不定式，动名词形式后面也能带宾语从句，还有些形容词（afraid,sure,glad等）之后也可以带宾语从句。）

二.结构：主语+谓语+连接词+宾语从句

三.种类：根据引词不同，宾语从句可分为三类。

1.由that引导的宾语从句。如果宾语从句是由陈述句充当，用that引导，that 无词义，在口语或非正式文体中常省略。如：

The teacher said (that) he is a good student .

The teacher said (that )the earth goes round the sun．。

The teacher said (that) light travels much faster than sound.

(举此例是为下面讲时态作铺垫)

2.由if或whether引导的当宾语从句。如果宾语从句是由一般疑问句充当，就用if或whether引导，意为“是否”。如：

I don't know if ／whether it will rain today。

在宾语从句中，if和whether通常可以互换，但在下列情况下只能用whether：①在具有选择意义，尤其是直接与or not连用时，往往用whether（if…or not 也可以使用）。如：

I don't know whether or not it will rain today。(=I don't know if it will rain or not today。

②在介词之后用whether。如：

I’m thingking about whether it will rain today.

③若用if会引起歧义时，则用whether。如：

Please let me know if it will rain today.可理解为：

a．Please let me know whether it will rain today.请告诉我今天会不会下雨。

b．If it will rain today.，please let me know．如果今天会下雨，请告诉我。

④whether置于句首时，不能换用if。如：

Whether it will rain or not today，Ican't say．今天会不会下雨，我说不上来。

⑤引导主语从句和表语从句时宜用whether。如：

Whether it will rain or not today is still a question．今天会不会下雨还是个问题。

The question is whether it will rain or not today．问题是今天会不会下雨。

⑥在不定式前用whether。如：

I haven’t decided whether to go to Beijing in National Day.(= I haven’t decided to whether/if I would go to Beijing in National Day.

3.由特殊疑问词引导的宾语从句。如果宾语从句是特殊疑问句，只需用原来的特殊疑问词引导。如：

I want to know how you studied English before.

I want to know why he didn’t come yesterday.

I want to know where he will go tomorrow.

I want to know what you are doing now.

I want to know what you were doing this time yesterday.

I want to know when you go to school in the morning.

She wanted to know how you studied English before.

She wanted to know why he didn’t come yesterday.

She wanted to know where he would go tomorrow.

She wanted to know what you were doing then.

She wanted to know what you were doing this time yesterday.

She wanted to know when you go to school in the morning.

She wanted to know what your names are.

注意：if和when既可以引导宾语从句，也可以引导状语从句，应注意它们在两种从句中的意思和用法的不同。if和when引导宾语从句时，分别意为“是否”和“何时”，其时态应和主句时态相呼应；它们引导状语从句时，意思分别为“如果，假如”和“当……时候”，当主句时态是一般将来时时，其时态用一般现在时。因此，遇到它们就要认真分析一下，它们究竟是引导什么从句。如：

If it rains tomorrow, I won’t come.（时间状语从句）

I don’t know if it will rain tomorrow. （宾语从句）

I want to know when you go to school in the morning. （宾语从句）

When you go to school,please tell me. （时间状语从句）

4.归纳总结：

①当宾语从句是由陈述句充时，用that引导；

②当宾语从句是由一般疑问句充当时，用if或whether引导；

③如果宾语从句是特殊疑问句，只需用原来的特殊疑问词引导。

四. 时态（一致性原则）

引导学生从所举例子当中归纳总结得出：

含宾语从句的复合句，主、从句谓语动词的时态呼应应包括以下三点内容：

1）如果主句的谓语动词是一般现在时，从句的谓语动词可根据需要，选用相应的任何时态。