Grammar公开课教案（教学设计）

Grammar 1. 识记、理解并能自主运用倍数的表达方法。

2. 识记、理解形容词和副词的比较级的用法。

3. 学会根据句子的真实情境体会比较级的各种含义。

4. 掌握几种表示比较的方式。

知识复习: (1) 形容词是用来修饰、描绘名词的，通常在句中作定语、表语或宾补，有时还可作状语。如：

He is honest and hardworking.

I found the book interesting.

某些形容词与定冠词连用表示一类人作主语时，谓语通常用复数形式。如：

The rich and the poor live in different parts of the city.

The English like to be with their families.

多个形容词作定语修饰名词的顺序：

冠词+序数词+基数词+性质状态（描述性）+形状大小+新旧老少+颜色+国籍+材料+名词。如：

a small round table

a tall gray building

a dirty old brown shirt

一张小圆桌子

一栋灰白色的高楼

一件脏而旧的棕色衬衫

一所著名的德国医学校

一辆昂贵的日本跑车

a famous German medical school

an expensive Japanese sports car

(2) 形容词比较等级的形式

①

规则形式

一般说来，单音节词及部分双音节词在后加-er; -est 来构成比较级和最高级；其他双音节词及多音节词在前加more, most.如：

great—greater—greatest

busy—busier—busiest

important—more important—(the)most important

②

不规则形式

good (well)—better—best

bad (ill)—worse—worst

many (much)—more—most

little—less—least

（3）形容词比较等级的用法

①表示两者的比较，用形容词的比较级+than. 如：

He is cleverer than the other boys.

This one is more beautiful than that one.

②

表示两者以上的比较，用"the +形容词最高级（+名词）+of (in) …"如：

He is the cleverest boy in his class.

③

表示两者是同等程度，用"as +形容词原级+as". 如：

He is as tall as I.

I have as many books as you.

④

越… 越…

例如：The more I learn, the happier I am.

⑤ You can never be too careful. 越小心越好

You can never praise the teacher too highly.

你怎么赞扬这个老师也不过分。

⑥ I have never spent a more worrying day.

那一天是最令我担心的一天。

I have never had a better dinner.

⑦ My English is no better than yours.

知识探究：

阅读下列句子, 注意比较的基本用法。

1. 原级比较

Iron is almost as useful as steel. 铁差不多与钢一样有用。 She has not been quite as(so) unlucky as she pretends. 她还没有像她装出的那样不幸。 He has learned as many English words as his brother (has).

他已学了和他哥哥一样多的英语单词。 He is as kind a person as his father. 他和他爸爸一样都是善良的人。 2. 比较级

表示“比……更……”。

They worked even harder than they promised. 他们工作得比他们允诺的还要卖力。 This street is narrower than that one. 这条街比那条街窄。 3. 倍数表达方法

Asia is four times as large as Europe.

亚洲是欧洲的四倍大。 Our school is twice bigger than yours.

我们学校比你们学校大两倍。 The new building is three times the height of the old one. 这座新楼是那座旧楼的三倍高。

通过观察以上句子, 我们发现原级比较的句型有(1)

, (2)

;比较级的句型是(3)

。常见的倍数的表达方法有(4)

种, 它们分别是(5)

__________________________________________________________。

运用要点：

1. 使用比较级要注意合乎逻辑。

我的电脑比她的贵。

误:My computer is more expensive than her.

正:My computer is more expensive than hers.

分析:从逻辑上说, 应该是my computer与her computer作比较, 而不是my computer与her比较, 句中的hers=her computer。

2. 双方比较表示一方超过另一方的度数或数量时, 可在比较级前加上副词修饰语, 表示程度。常见的有:even,

still,

rather,

any(疑问句、否定句或条件状语从句),

no,

far,

a 这是我吃过的最好的一顿饭。

我的英语和你的英语都不怎么样。

little,

a bit,

a lot,

a great deal 等。

She felt a great deal more comfortable. 她感觉舒服多了。

3. 比较级中的特殊结构。

(1)比较级+and+比较级

“越来越……”

When winter is coming,

it gets colder and colder. 冬天来了, 天气变得越来越冷了。

My hometown is getting more and more beautiful. 我的家乡正变得越来越美丽。

(2)The+比较级(+主语+谓语), the+比较级(+主语+谓语)“越……;就越……”

The busier he is,

the happier he feels. 他越忙就越高兴。

The sooner,

the better. 越快越好。

(3)the+比较级+of the two “两个中比较……的”

This watch is the cheaper of the two. 这块手表是两块中比较便宜的。

The younger of the two is my cousin. 两人中较年轻的那个是我表弟。

4. 用比较级形式表达最髙级含义的几种情况。

(1)否定词(not, no,

never等)在比较句型中使用时表示最髙级含义。

I have never heard a more interesting story. 我从来没有听过比这更有趣的故事。

I can’t agree with you more. 我再同意你不过了(我非常同意你)。

No other building is as grand as the new hotel. 新建的旅馆是最豪华的。

(2)在比较状语中用any,

other,

else等词时, 比较级形式表示最高级含义。

Tom cared more for money than for anything else. 汤姆最喜欢钱。

Li Ming is much cleverer than any other student in their class.

李明是他们班里最聪明的学生。(李明属于他们班) China is larger than any country in Africa. 中国比非洲的任何国家都大。(中国不属于非洲) 5. “no+比较级+than”与“not +比较级+than”。

no+比较级

+ than “和……一样不……”

表示对两个比较对象都进行否定(可由

neither. . .

nor. . . 结构来改写) not + 比较级+than 表示在程度上前者不如后者(相当于not so / as. . .

as. . . ) I’m no more foolish than you. 我们俩都不傻。(相当于

Neither I nor you are foolish. ) This book is not more interesting than that one. 这本书不如那本书有趣。(相当于This book is less interesting than that one. 或

This book is not so interesting as that one. )

牛刀小试：

用所给词的适当形式填空

1. Which is

(small), the sun, the moon or the earth? 2. The air in Beijing is getting much

(clean) now than a few years ago. 3. Mobile phones are very popular now and they are

(cheap) than before. 4. This room is twice

(big) as that one. 5. This necklace looks

(nice) and sells

(well). 6. Hainan is a very large island. It’s the second

(large) island in China.

7. (2014新课标全国Ⅰ)Finally,

that hard work paid off and now the water in the river

is

(clean) than ever. 8. (2014广东) We had made our reservation six months

(early),

but the man at the

front desk said there had been a mistake. 9. (2014辽宁)The

(hard) you try to beat him,

the more likely you will get hit.

He controls you! 语法填空

Good morning,

ladies and gentlemen.

Welcome

1

our school,

Eton College. Now please allow me

2

(introduce) our lab to you. In recent years, our school develops quickly and great changes

3

(take) place here so far. On the one hand,

we have wide and bright labs which

4

(equip) with all kinds of advanced laboratory

5

(facility). On the other hand, the science teachers,

6

teach us physics and chemistry,

are

7

ordinary but very excellent. They always make classes lively,

interesting and meaningful. And to aim at

8

(get) the right data(数据),

the students always listen carefully, think deeply and practice actively according to the teachers’

instructions. So our abilities of observing and practicing improve rapidly. To draw a

9

(conclude), every one of us treasures the beneficial conditions and makes good use of our lab

10

(help) us study. 答题处：1.________

2. ________ 3. _________ 4. _________ 5. _________

6. _______ 7. ________ 8. _________ 9. _________ 10. _________