1、Section Grammar 比较等级语法图解探究发现The earth is fortynine times as large as the moon.The earth is fortynine times larger than the moon.This stone bridge is twice the length of the wood one.The book is as interesting as that one.Its getting brighter and brighter!The closer you are, the more youll see.We nee
2、d a piece which is much bigger than that.The physics lesson was a lot more interesting than the chemistry lesson.He has never spent a more worrying day.His whole school education added up to no more than one year.我的发现(1)例句为倍数表达法，其结构分别是：句倍数as形容词as；句倍数比较级than；句倍数the性质名词。(2)例句为原级比较，其结构是：as形容词as。(3)例句是比
3、较级的表达。其中例句的结构是“比较级and比较级”；例句的结构是“the比较级，the比较级”；例句中分别用 much,_a_lot 修饰比较级；例句中用“否定词比较级”表示最高级；例句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asadj./adv.asThis 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thanThis 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(s
4、ize, height, width, depth, length等)ofThis 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。This street is four_times_longer_than that one.This street is four_times_as_long_as that one.This street i
5、s 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asWe 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The price of the house in Shanghai this year is twice_what_i
6、t_was last year.今年上海的房价是去年房价的两倍。There are three_times_as_many_students_as we expected.学生数量是我们预期的三倍。(2)句型转换The big tree is twice as high as the small one.The_height of the big tree is twice that_of the small one.His books are three times as many as his younger sisters.He has got three_times_as_many_b
7、ooks_as 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 imagined. 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
8、 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The girl can run so fast as her elder sister.soasI didnt do my homework as careful as you.carefulcarefullyThis book is a
9、s interesting book as that one.interesting_后加_aJohn plays football as well, if not better than, David.well_后加_as2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 youll 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
10、.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 twon.”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 thanno 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
11、 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
12、 thanno 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)“m
13、ore 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 couldnt 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It becomes colder_and_colder when winter comes.冬天来了，天气变得越来越冷。The_harder you stud
14、y, the_greater_progress you will make.你学习越努力，取得的进步就越大。The_taller_of_the_two_boys is our monitor.两个男孩中较高的那个是我们的班长。I have never seen a_better_film. 我从未看过比这更精彩的影片。He is more_a_writer_than_a_teacher.与其说他是老师不如说他是作家。The beauty of the city is more_than_I_can_describe.这座城市的美丽并非我所能描述。He is feeling no_better_
15、than yesterday.他感觉并不比昨天好多少。No_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But before the better idea is put forward, well make do with this suggestion.theaIve never had a most pleasant trip before.mostmoreThe more you eat, fatter you will become.fatter_前加_theOur school is b
16、ecoming the more and more beautiful.去掉_the3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。Eve
17、n worse, the amount of fast food that people eat goes up.(2017全国卷)更糟糕的是，人们吃的快餐数量上升了。(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翻译句子他比他弟弟高多了。(far)He_is_far_taller_than_his_yo
18、unger_brother.他比他妈妈高一头。(a head)He_is_a_head_taller_than_his_mother.他对此事的了解甚至比我还少。(even)He_knows_even_less_about_it_than_I_do.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?.单句语法填空1I think its too expensive. Id like a cheaper (cheap) one.2The more difficult the problem
19、 is, the more careful you should be.3The new building is three times the height (high) of the old one.4The restaurant wasnt half as good as that other restaurant we went to.5How much better (good) she looks without her glasses.6The value of the house is twice what it was.7Professor Wang has written
20、some short stories, but he is better (well) known for his plays.8My uncles house in the downtown area is much smaller than ours, but its twice as expensive.9Tom is wise enough to achieve his success.But in my opinion, he is more_lucky (lucky) than wise.10The weather isnt good enough for an outing, i
21、s it?Not in the least. We cant have a worse (bad) day at this time of the year.完成句子1It is much_more_difficult to judge oneself than to judge others.判断自己比判断别人要难得多。2This bridge is 9_meters_longer_than that one.这座桥比那座桥长9米。3China Daily is more_than_a_newspaper. It can broaden our horizons.中国日报不仅仅是份报纸，它能
22、开阔我们的视野。4How beautifully she sings! Ive never_heard_a_better_voice.她唱得多好啊！这是我听到的最美的声音。5The_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。6This 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。7I find flying is a_lot_more_interes
23、ting_than going by sea.我发现乘飞机比乘船有趣得多。8As 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。.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
24、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
25、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：去掉第二个the第二句：去掉of; safesafer第四句：feelfelt第五句：whowhich第六句：memyself第七句：waswere第八句：andbut第九句：muchmore第十句：wonderfullywonderful