陈述句（肯定句，否定句）教案

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陈述句

一、

陈述句的概念

陈述句是用于陈述事实和观点的句子。陈述句包括肯定结构和否定结构，句末用句号。如： This is a desk. (肯定结构)

He can sing and dance. (肯定结构)

He doesn’t have a computer. (否定结构) There aren’t any pictures. (否定结构)

二、

肯定句变否定句的基本方法

1. be动词的否定式

be 动词根据不同的人称和时态有不同的形式，在一般现在时中是am , is , are可用作联系动词，构成否定式时，一律在其后面加否定词not.

He is reading. --- He is not reading. They are from China. --- They are not from China.

2. 情态动词的否定式

情态动词的否定式是在其后面直接加not. 如：

I can swim. --- I can’t swim. He can dance. --- He can’t dance. You should go to school at seven. --- You shouldn’t go to school at seven.

3. 实义动词的否定句

实义动词变否定句时，要借助助动词do , does，在一般现在时中用do或者does其句子结构为：主语+ don’t / doesn’t + 动词原形+其它 例如：

I like pop music. --- I don’t like pop music. He likes running. --- He doesn’t like running.

She does her homework at home. --- She doesn’t do her homework at home. 典型例题：

1. My sister ______ moon cakes with eggs in them.

A. don’t like B. doesn’t like C. doesn’t likes D. doesn’t liking 2. He often does his homework at home. 变为否定句

_______________________________________________________________ 3 . He doesn’t goes to the zoo every Sunday.(改错题) （ ）_________ A B C D

4. Does Li Lei likes sports? （判断正误）( )

开心练习：

姓名：李江平 电话：15298202089

最高效，最专业，让学生掌握知识，培养能力

一、

将下列句子变为否定句，每空一词。

1． This is a desk.

This ________ a desk.

2. Grandpa tells stories to us every evening.

Grandpa ________ ________ stories to us every evening. 3. He can draw pictures.

He _______ draw pictures.

4. He has a nice watch.

He _______ _______ a nice watch. 5. They do a lot of homework at school.

They ________ ________ a lot of homework at school. 6. You must play football here. You ________ play football here. 7. They are having an English class.

They _________ _________ an English class. 8. Peter goes to the zoo once a year.

Peter _________ _________ to the zoo once a year.

开心突破：

二、

下面各句四处划线部分有一处是错误的，请指出并改正。

1. He doesn’t the homework every day. ( )

A B C D

2. He doesn’t have some rice for supper. ( ) A B C D

3. This coat are red. That coat is blue. ( ) A B C D

4. He don’t go to school yesterday. ( )

A B C D 三、连词成句。

1. playing , like , I , football

_______________________________________________________ 2.aren’t , any , wall , the , pictures , there , on

_______________________________________________________ 3. waiting , bus , for , the , we , are

_______________________________________________________ 4. much , the , how , shirt , is

_______________________________________________________

姓名：李江平 电话：15298202089

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