[语法初识]
原句感知 ①The earth is forty-nine times larger than the 1.①②③句是倍数表达的三种常见形式，即：moon. 倍数＋as_..._as；倍数＋比较级＋than；倍数②The earth is forty-nine times as large as the ＋the＋性质名词＋of_...。 moon. 2．④⑤句是比较级的两种特殊用法：the ③This road is six times the length of that one. more ..., the more ...越……就越……；more and ④The more money you make, the more you more ...越来越……。 spend. 3．由第⑥⑧句知，比较级前可用⑤It's getting warmer and warmer. much,_even,_still,_a_great_deal等修饰。 ⑥We need a piece which is a great deal bigger 4．⑦句表示否定词和比较级连用可表达最高than that. 级含义。 ⑦Nothing ismore important than health. 5．通过⑧句可知，在进行比较时，比较的对⑧The population of Shanghai is much larger 象必须一致。 than that of Jinan.
[语法剖析]
语法点一
1．倍数＋as＋形容词或副词的原级＋as ... The building is four times as large as that one. 这座大楼是那座大楼的四倍大。
倍数的表达法 自主探究 高中英语专题
2．倍数＋形容词或副词的比较级＋than ... Their garden is three times bigger than ours. 他们的花园是我们的四倍大。
3．倍数＋the＋性质名词(size，height，depth，length，width)＋of ... The hill is eight times the height of the small one. 这座山是那座小山的八倍高。 4．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。 5．倍数＋that of ...
In our county now the grain output is six times that of before liberation. 现在我们县的粮食产量相当于解放前的六倍。 集中演练1 1－1.单句改错
①The production now is four times that it was ten years ago. that→what ②The population of our city is five times larger than their city. than后加that_of
③The yield of the early rice of our area this year is three times what of five years ago. what→that ④The wheels of the old wagon are nearly twice size of those of a modern car. size前加the ⑤Peter's jacket looked just the same as Jack's, but it cost much as twice as his. much_as_twice→twice_as_much 1－2.句型转换
⑥The big tree is twice as high as the small one. →Theheight of the big tree is twice thatof the small one. ⑦His books are three times as many as his younger sister. →He has got threetimesasmanybooksas his younger sister. 1－3.一句多译
这张桌子是那张桌子的三倍长。
⑧This desk is three times as long as that one. ⑨This desk is three times longer than that one.
高中英语专题
⑩This desk is three times the length of that one.
语法点二
1．基本用法
(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＋原级＋as ...”
He is as careful as I. 他和我一样细心
He doesn't ran as/so fast as Tom. 他跑得没汤姆快。
(2)比较级：“形容词/副词比较级＋than ...”表示“比……更……” This picture is more beautiful than that one. 这幅画比那幅漂亮。
Yao Ming is taller than Michael Jordan. 姚明比迈克尔·乔丹高。 2．特殊用法
(1)the＋比较级 ... the＋比较级 ... 表示“越……，越……” The more we get together, the happier we will be. 我们相聚越多就越快乐。
(2)“比较级＋and＋比较级”表示“越来越……” The girl is more and more beautiful. 这个女孩越来越漂亮了。
(3)“否定词＋比较级”表示最高级含义
How beautifully she sings! I have never heard a better voice. 她唱得多好啊！我从未听过她这么好的声音。
(4)“the＋形容词/副词比较级＋of ...”表示“两者之中比较……的一个” This is the bigger of the two rooms.
形容词或副词的比较级 高中英语专题
这个房间是两个中比较大的一个。
(5)more than ... can ...“……是某人所不能……的” The beauty of Hangzhou is more than I can describe. 杭州之美是我所不能描述的。
(6)A is less＋原级＋than B“A在某一方面不如B” She speaks less loud than her mother. 她不如她妈妈说话声音大。
集中演练2 2－1.单句改错
①The experiment was much more easier than we had expected. 去掉more ②He has never spent a most worrying day. most→more ③It becomes the colder and colder when winter comes. 去掉the ④He walked less faster than I did. faster→fast
⑤The more you eat, the more fat you will become. more_fat→fatter 2－2.完成句子
⑥我对英语的掌握不如你的一半好。
My command of English is not_half_so_good_as_yours． ⑦你考虑的越多，你就会越担心。
The_more you consider, the_more_worried you will feel. ⑧随着时间的推移，他在这次夏季培训中越来越轻松。
With time going by, he became more_and_more_relaxed in the summer training. ⑨我还没有见过一个像他这么聪明的人。 I have not seen a person as/so_clever_as_he_is. ⑩这种噪音我忍受不了。
The noise is more_than_I_can_put_up_with． ⑪两兄弟中较年轻的那个是一名律师。 The_younger_of_the_two_brothers is a lawyer.
高中英语专题
语法点三
在形容词比较级前可以用a bit, a little, rather, much, any (用于疑问句或否定句中), far, by far, a lot,
a
great
deal,
greatly
(……得多),
still,
even
比较级的修饰语 (更加……)等副词来修饰。还可以用表示倍数的词或度量名词作修饰语。
He did much better than I in English. 他英语学得比我好多了。 He is taller by far than his brother.
他比他哥哥高多了。(注意by far的不同位置)
集中演练3 3－1.单句改错
①She is by far prettier of the two sisters. far后加the ②Do you mind if we stay a bit of longer today?去掉of ③It is even cold today. cold→colder
④But it doesn't mean they can do it some better than the rest of us.some→any ⑤A bike runs much more slowlier than a motorbike.slowlier→slowly 3－2.完成句子
⑥——你认为我们需要多穿点衣服吗？ ——或许吧，收音机上说明天有点冷。 —Do you think we need to take more clothes?
—Perhaps. The radio says it will be a_bit_colder tomorrow. ⑦我想买的那台个人电脑比我预想的要贵得多。
The personal computer that I want to buy is far_more_expensive_than I expected. ⑧你今天感觉好些了吗？ Are you feeling any_better today? ⑨你开车太快了，能开得稍慢些吗？
高中英语专题
You're driving too fast. Can you drive a_bit_more_slowly? ⑩这台电视机比那台便宜得多。 This TV set is much_cheaper_than that one.
[链接高考]
单句语法填空/完成句子
1．(2014·全国卷Ⅰ)Finally, that hard work paid off and now the water in the river is cleaner(clean) than ever.
解析：句意：最后，努力工作有了回报，现在河里的水比以前干净了。此处表达了与以前相比更干净，故用比较级。
2．(2014·辽宁高考) The harder (hard) you try to beat him, the more likely you will get hit.He controls you!
解析：句意：你打他越重，你越可能被打，他控制你。此处用了“the more ..., the more ...”句型，故用比较级。
3．(2014·广东高考) After our plane landed, we went to the hotel. We had made our reservation six months earlier(early), but the man at the front desk said there had been a mistake. 解析：根据句意可知，我们提前六个月就已经预订了，意为比现在早六个月，故用比较级。 4．(2013·全国卷Ⅱ)It may not be a great suggestion. But before a better (good) one is put forward, we'll make do with it.
解析：句意：这可能并不是一个好的建议。但是在提出更好的建议前，我们先勉强采纳它。此处表达和以前的建议相比更好的建议，故用比较级。
5．(2013·天津高考)I think watching TV every evening is a waste of time — there are more_meaningful_(meaningful) things to do. 解析：句意：我认为每天晚上看电视是浪费时间——有更有意义的事情要做。more meaningful things意为“更有意义的事情”。
6．(2013·江西高考)There are a small number of people involved, possibly as_few_as_twenty(少到只有20人)．
解析：句意：牵涉其中的只有少数人，可能只有20人。根据句意可知，强调少的概念用as
高中英语专题
few as。
7．(2013·安徽高考)It's said that the power plant is now twice_as_large_as_what_it_was (是过去的两倍大)．
解析：句意：据说现在发电厂是过去的两倍大。表示倍数用“倍数＋as＋形容词或副词原级＋as＋what从句”。
[针对演练]
Ⅰ.单句语法填空
1．Which is the_smallest (small), the sun, the moon or the earth? 2．The air in Beijing is getting much cleaner(clean) now than a few years ago. 3．Mobile phones are very popular now and they are cheaper(cheap) than before. 4．He runs twice as quickly (quick) as I. 5．This necklace looks nice(nice) and sells well (well)．
6．Hainan is a very large island. It's the second largest(large) island in China. 7．I have never spent a more_worrying(worrying) day. 8．My dictionary is not as useful as yours(you)． 9．Asia is four times larger than Europe. 10．The more(many), the better(good)． Ⅱ.完成句子
1．这个城市是我家乡的十倍大。
The city is ten_times_the_size_of my hometown. 2．——在晚会上你过得愉快吗？
——是的，我以前从没有参加过比这更好的晚会。 —Did you enjoy yourself at the party?
—Yes, I've never been to a_more_exciting_one before. 3．这个小城自1978年以来已经发展成了一个现代化的大城市，比以前的两倍还大。 The
little town has grown into a modern big city since 1978 and more_than_twice_as_big_as_what_it_used_to_be．
4．她等的时间越长，她变得越不耐烦。
is
高中英语专题
The_longer she waited, the_more_impatient she became. 5．密西西比河比美国其他任何一条河都长。
The Mississippi River is longer_than_any_other_river in the United States. Ⅲ.短文改错
Li Ming went to the park in last Saturday afternoon after he had already finished his homeworks. He saw several boys skating in the pond happily. Suddenly he heard a cry for help. Looked ahead, he found one of the boys had fell into the water. Li Ming jumped into the icy water immediately and tried to pull the boy to safe. Then the boy was given first aid but soon came to myself. The boy's parents came soon after they received the phone call. They were very grateful Li Ming, who was trembling there with cold.
答案：第一句：去掉in; homeworks→homework 第二句：in→on
第四句：looked→looking; fell→fallen 第五句：tried→managed; safe→safety 第六句：but→and; myself→himself 第八句：grateful后加to
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