比较级教案

形容词的比较级

教学过程：

一、预习

对上节课课后作业中的问题进行查漏补缺

二、知识讲解

知识点1：形容词的比较级的用法：用于两者之间，表示“其中一个比另外一个更……”或“较”，后面通常用连词than连接另一个比较对象，其基本句型是：

主语+谓语或者系动词+形容词比较级+than+比较对象。

Eg. Jim is taller than Mike.

Lily is more beautiful than Lucy.

知识点2：形容词比较级的变化规则：规则变化以及不规则变化。

1 规则变化

A 单音节词尾加er：tall-taller, short-shorter, long- longer

B 单音节以e结尾的只加r：fine-finer, large-larger.

C 以一个元音字母加一个辅音字母结尾并且是重读闭音节的，要双写最后一个辅音字母，再加er：hot-hotter, big-bigger.

D 以辅音字母加y结尾的单音节单词和部分双音节单词变比较级时，要先把y变为i，再加er：early-earlier, busy-busier.

E 多音节单词或者部分双音节单词在变比较级时没在前面加more：outgoing- more outgoing, difficult-more difficult.

(部分双音节单词的比较级有两种变化方式：clever-cleverer, more clever.)

2 不规则变化

good/well-better bad/ill- worse many/much- more old-older/elder far-farther/further little-less

知识点3：比较级的用法:

(一)当两个人或事物（A和B）进行比较时，我们需要用到形容词（副词）的原级或者比较级1．表达“A和B一样”，用as…as的结构。

公式: A+be动词+as+形容词原级+as…+B

A+实义动词+as+副词原级+as…+B

Eg I am as tall as you.我和你一样高。

He runs as fast as I. 他跑得和我一样快。

2．表达“A不如B”用not as…as的结构。

公式: A+be动词的否定形式+as+形容词原级+as…+B

A+助词的否定形式+动词+as+形容词原级+as…+B

Eg I am not as tall as you.我没有你高。

He doesn’t run as fast as I. 他没有我跑得快。

3．表达“A大于B”用“比较级+than”的结构。

公式: A+be动词+形容词比较级+than+B…

A+实义动词+副词比较级+than+B…

Eg I am taller than you.我比你高。

He runs faster than I. 他跑得比我快。

(二)关于形容词、副词比较级的更多用法

1．比较级前面可以加上表示“优劣程度”的词或短语，意思是“更…”，“…得…”。常见词有much, a little, even, a lot, a great deal等。

Eg He is much taller than I.他比我要高得多。

I jump a little higher than he.我跳得比他高一点点。

2.比较级前面可以加上表示具体数量差别的结构,表示具体“大多少”，“小多少”，“长多少”，“短多少”等。

Eg I am two years older than he.我比他大两岁。This building is 20 meters higher than that one. 3．“比较级+and+比较级”表示“越来越……”。

It is getting warmer and warmer．天气越来越暖和。

He is running faster and faster．他跑得越来越快。

0ur country is becoming more and more beautiful．我们祖国越来越美了。

4．“the more…，the more…”表示“越……，就越……”，

The more，the better.多多益善。

The more careful you are,the fewer mistakes you will make.你越细心，犯错就越少。

5．“the more…of the two…”表示“两个当中较。。。的一个”

The taller of the two boys is my brother

知识点4使用比较级时应该注意的问题(错题分析)

1 Your hair is longer than me.(mine)

2 The weather in Beijing is colder than Guangzhou.(that in Guangzhou)

3 Picking apples is much better than have class.(having class)

4 Jim is younger than any student in his class.(any other student)

5 Jim from class 1 is taller than any other student in Class 2.(any student)

6 The city is getting more beautiful and more beautiful.(more and more beautiful)

7 The busier he is, happier he feels.(the happier he feels)

8 Science is as more interesting as art.(as interesting as)

三、典型例题

1）---- Are you feeling ____?

---- Yes，I'm fine now.

A. well

B. better

C. good

D. quite better

答案：B. quite修饰原级，well的比较级为better.

2）The experiment was____ easier than we had expected.

A. more

B. much more

C. much

D. more much