Grammar教案范文

Section ⅢGrammar

—

比较等级

语法图解

探究发现

①The earth is forty-nine times as large as the moon. ②The earth is forty-nine times larger than the moon. ③This stone bridge is twice the length of

the wood one. ④The book is as interesting as that one. ⑤It’s getting brighter and brighter! ⑥The closer you are, the more you’ll see. ⑦We need a piece which is much bigger than that. ⑧The physics lesson was a lot more interesting than the chemistry lesson. ⑨He has never spent a more worrying day. ⑩His whole school education added up to no more than one year. [我的发现]

(1)例句①②③为倍数表达法，其结构分别是：句①倍数＋as＋形容词＋as；句②倍数＋比较级＋than；句③倍数＋the＋性质名词。

(2)例句④为原级比较，其结构是：as＋形容词＋as。

(3)例句⑤⑥⑦⑧⑨⑩是比较级的表达。其中例句⑤的结构是“比较级＋and＋比较级”；例句⑥的结构是“the＋比较级，the＋比较级”；例句⑦⑧中分别用

much,_a_lot 修饰比较级；例句⑨中用“否定词＋比较级”表示最高级；例句⑩是比较级的特殊句式。

一、英语倍数表达法

1．倍数表达法的三个常用句型

(1)倍数＋as＋adj./adv.＋as

This big stone is three times as heavy as that one. 这块大石头的重量是那一块的三倍。

(2)倍数＋比较级＋than This hall is five times bigger than our classroom. 这个大厅是我们教室的五倍大。

(3)倍数＋the＋性质名词(size, height, width, depth, length等)＋of This hill is four times the height of that small one. 这座山的高度是那座小山的四倍。

[名师点津]

英语中，用twice或double表示两倍，三倍或三倍以上用基数词＋times，如three times, four times。

[即时演练1]

一句多译

这条街是那条街的四倍长。

①This street is four_times_longer_than that one. ②This street is four_times_as_long_as that one. ③This street is four_times_the_length_of that one. 2．倍数表达法的两个变体

(1)倍数＋what从句

The rainfall this year is twice what it was last year. 今年降雨量是去年的两倍。

(2)倍数＋as many/much＋名词＋as We have produced three times as many computers as we did last year. 我们生产的计算机是去年的三倍多。

[即时演练2]

(1)完成句子

①The price of the house in Shanghai this year is twice_what_it_was last year. 今年上海的房价是去年房价的两倍。

②There are three_times_as_many_students_as we expected. 学生数量是我们预期的3倍。

(2)句型转换

①The big tree is twice as high as the small one. →Theheight

of the big tree is twice

thatof

the small one. ②His books are three times as many as his younger sister. →He has got threetimesasmanybooksas

his younger sister. 二、形容词和副词的比较等级

1．形容词和副词的比较等级的基本句式

(1)原级比较：“...as＋形容词/副词原级＋as ...”表示“和……一样”，否定式为“...not as/so＋形容词/副词原级＋as ...”

This picture is as beautiful as that one. 这幅画和那幅画一样漂亮。

The work is not as/so difficult as you imagine.

这工作没有你想象的那么难。

[名师点津]

在此句式中，若形容词原级后面跟单数可数名词，则应注意冠词与形容词的位置关系，即“as＋形容词原级＋a(n)＋单数可数名词＋as”。

He is as clever a boy as his brother. 他是和哥哥一样聪明的男孩子。

(2)比较级：“形容词/副词比较级＋than”意为“比……更……”

She speaks louder than her mother. 她比她妈妈说话声音大。

My computer is more expensive than hers. 我的电脑比她的贵。

[即时演练3]

单句改错

①The girl can run so fast as her elder sister.so→as ②I didn’t do my homework as careful as you.careful→carefully ③This book is as interesting book as that one.interesting_后加_a ④John plays football as well, if not better than, David.well_后加_as 2．形容词和副词比较级的特殊句式

(1)“the＋比较级，the＋比较级”表示“越……，就越……”

The more careful you are, the fewer mistakes you’ll make. 你越仔细，犯的错误就越少。

(2)“比较级＋and＋比较级”表示“越来越……”

With summer coming, the day is becoming longer and longer. 随着夏天的到来，白天变得越来越长。

My hometown is getting more and more beautiful.

我的家乡正变得越来越美丽。

(3)“the＋比较级＋of the two＋n.”表示“是两者中较……的那个”

The younger of the two brothers is a lawyer. 两兄弟中较年轻的那个是一名律师。

(4)no more than与not more than

no more than相当于only，表示“仅仅，不超过”；而not more than相当于at most，意为“至多；最多”。

She has no more than one yuan in her pocket. 她兜里只有一元钱。

We can learn not more than 20 new words this week. 我们这周最多只能学20个生词。

(5)no more ...than ...与not more ...than ... no more ...than ...表示“和……一样不……”，而not more ...than ...则表示“不如……”。

She is no

more careful than her sister. 她并不比妹妹细心。(她和妹妹都不细心) She is not more careful than her sister. 她不如妹妹细心。

(6)no less than与not less than no less than表示“不比……少”，相当于as much as，说明这个数是大的；而not less than表示“不少于”，不强调这个数的大小，只说明数据本身。

I have no less than ten dictionaries. 我起码有10本词典。(意味着“我的词典多”) I have not less than ten dictionaries. 我拥有的词典不少于10本。(只说明事实) (7)more ...than ...用于同一人或物的两种性质或状态，可翻译成“与其……，倒不如说……”。

He is more wise than diligent. 与其说他勤奋，倒不如说他聪明。

(8)“more than＋主语＋can＋谓语”表示“超出……的范围”

The noise is more than I can put up with.

这种噪音我忍受不了。

(9)“否定词＋比较级”结构表示最高级含义

I have never seen a more interesting book. 这是我所看过的最有趣的书。

You couldn’t find a better place to live in. 这是你能找到的最好的居住地。

[即时演练4]

(1)完成句子

①It becomes colder_and_colder when winter comes. 冬天来了，天气变得越来越冷。

②The_harder you study, the_greater_progress you will make. 你学习越努力，取得的进步就越大。

③The_taller_of_the_two_boys is our monitor. 两个男孩中较高的那个是我们的班长。

④I have never seen a_better_film.

我从未看过比这更精彩的影片。

⑤He is more_a_writer_than_a_teacher. 与其说他是老师不如说他是作家。

⑥The beauty of the city is more_than_I_can_describe. 这座城市的美丽并非我所能描述。

⑦He is feeling no_better_than yesterday. 他感觉并不比昨天好多少。

⑧No_less_than ten people were injured in the accident. 在事故中受伤的多达10人。

(2)单句改错

①But before the better idea is put forward, we’ll make do with this suggestion.the→a ②I’ve never had a most pleasant trip before.most→more ③The more you eat, fatter you will become.fatter_前加_the ④Our school is becoming the more and more beautiful.去掉_the 3．比较等级的程度状语

(1)比较级前可以用一些表示程度的词修饰，说明两者相比差异程度的大小。常用的有：a little, a bit, a lot, much, far, by far, a great deal, greatly, even, still, yet, no, rather等。

He did much better than I in maths. 他数学学得比我好多了。

She arrived a little earlier than I this morning. 今天早上她比我稍早一点到达。

We must unite to win a even greater victory. 我们必须团结起来，争取更大的胜利。

(2)比较级前还可以用表示倍数的词或度量名词作修饰语。例如a head, two meters等。

This rope is two meters longer than that one. 这根绳子比那根长两米。

(3)疑问句中用any修饰比较级。

Are you feeling any better today? 你今天感觉好些了吗？

[即时演练5]

翻译句子

①他比他弟弟高多了。(far) He_is_far_taller__than_his_younger_brother. ②他比他妈妈高一头。(a head) He_is_a_head_taller_than_his_mother. ③他对此事的了解甚至比我还少。(even) He_knows_even_less_about_it_than_I_do. ④你开得太快了，你能开慢点吗？(a bit) You_are_driving_too_fast._Can_you_drive_a_bit_more_slowly?

Ⅰ.单句语法填空

1．I think it’s too expensive. I’d like a cheaper (cheap) one. 2．The more difficult the problem is, the more careful you should be. 3．The new building is three times the height (high) of the old one. 4．The restaurant wasn’t half as good as that other restaurant we went to. 5．How much better (good) she looks without her glasses. 6．The value of the house is twice what it was. 7．Professor Wang has written some short stories, but he is better (well) known for his plays. 8．My uncle’s house in the downtown area is much smaller than ours, but it’s twice as expensive. 9．—Tom is wise enough to achieve his success. —But in my opinion, he is more_lucky (lucky) than wise. 10．—The weather isn’t good enough for an outing, is it? —Not in the least. We can’t have a worse (bad) day at this time of the year. Ⅱ.完成句子

1．It is much_more_difficult to judge oneself than to judge others. 判断自己比判断别人要难得多。

2．This bridge is 9_meters_longer_than that one. 这座桥比那座桥长9米。

3．ChinaDaily is more_than_a_newspaper. It can broaden our horizon. 《中国日报》不仅仅是份报纸，它能开阔我们的视野。

4．How beautifully she sings! I’ve never_heard_a_better_voice. 她唱得多好啊！这是我听到的最美的声音。

5．The_closer you stay to nature, the_more you will appreciate her beauty.

你愈接近大自然，就愈能欣赏她的美。

6．This room is twice_the_length_of that one, but it is much_narrower. 这个房间的长度是那个房间的两倍，但窄得多。

7．I find flying is a_lot_more_interesting_than going by sea. 我发现乘飞机比乘船有趣得多。

8．As time went on, he found it more_and_more_difficult to support his family. 随着时间的推移，他发现养家越来越困难了。

Ⅲ.短文改错

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线()划掉。

修改：在错的词下画一横线，并在该词下面写出修改后的词。

注意：1.每处错误及其修改均仅限一词；

2．只允许修改10处，多者(从第11处起)不计分。

During the weekend I travelled by the air for the first time in my life. I usually travel by train because of it is much cheaper and safe. But to fly in the sky was something new to me. In the very beginning I feel a little nervous. I looked around and saw many smiling faces and determined eyes, who made me calm down very soon. After a while, I became excited when I found me high in the sky among the clouds. I also found that mountains, fields, rivers and so on was interestingly small. I enjoyed the frightening and comfortable journey very much. After all, it is much interesting to take a plane than to take a car. I will never forget this wonderfully trip by plane. 答案：第一句：去掉air前的the 第二句：去掉of; safe→safer 第四句：feel→felt 第五句：who→which 第六句：me→myself 第七句：was→were 第八句：and→but 第九句：much→more 第十句：wonderfully→wonderful