四、比较中的省略。

1. 同级比较中的省略

①as⋯as 中，as 从句的省略结构，可省略整个谓语部分，保留主语， 如：

She sings as well as her sister.她跟她的姐姐唱得一样好。

②可以省去谓语部分，保留主语和 be、have 等助动词：Susan has done as much housework as you have.(Susan 干的家务活和你一样多)。

③可以省去主语和谓语，只剩下状语，如：It is not as cold in Beijing as in Datong.北京的天气没有大同冷。

1. 比较级中的省略

①than 从句也可以省去整个谓语部分，保留主语，如：Tom is younger than Jane.汤姆比简大。（省去了 is young）/They say that blood is thicker than water,that our relatives are more imprtant to us than others.他们说血浓于水，亲属对我们来说比其他人更重要。

②than 从句省去部分谓语部分，保留主语和 be,have 或助动词，如： The white collar workers earn more than the blue workers do. 白领工人比蓝领工人挣得多。

这时我们可以进行倒装，即将 than 后从句中的 be,have 或助动移到该从句的前边，如：After all,big changes are relatively easier to make than are small ones.相对来说，大变动比小变动毕竟容易些。/The fact,is that some drug addicts are much better able to cure addiction in each other than are psychiatrists;some convicts can run better rehabilitation programs for convcts than do correctional officers;some patients in mentalhospitals are better for each other than is the staff. 事实上，吸毒成瘾者之间戒瘾比精神病医生的作用还好；有些罪犯在改造其他罪犯方面比教改人员强；医院里的病人与病人之间的沟通比医务人员与病人间的沟通还强。

③than 从句可以省去主语和部分谓语，保留宾语：如：Grandma gives more candies to her grandson than her granddaughter.奶奶给孙子的糖比给孙女的多。（省去了 she gives candies to）

④than 从句可以省去主语和谓语，保留状语，如：There are more books in this library than in that library.这个图书馆的书比那个多。（省去了 there are many books）/She is much better than yesterday. 她比昨天好多了。（省去了 she was ） /Signs of dishonesty inschool,business,and government seem much more numerous in recent years than in the past.近些年来在学校、

商业和政府中欺诈的迹象很多。

⑤than 从句可以省去主语，保留谓语部分，如：His speed of doing the work was much faster than had expected.他干此事的速度远比想象的快。（省去了 he 或 we）

⑥有时可以省去整个 than 从句，如：He is much healthier and happier.她比以往任何时候都健康幸福。（省去了 than he was ever before.）

五、no more than⋯表示“只不过”；not more than⋯表示“不多于”； no less than 表示“不亚于”；而 not less than 表示“不少于”； more often than not 表示“多数情况下”，例如：

There are no less than five hundred people present at the New Year party.

出席新年晚会的有五百人之多。（出席的人较多）

There are not less than five hundred people present at the new Year party.

出席新年晚会的只有五百人。（出席的人较不多）

During observations made over a fifty-year period,the powerout-put of the Sun has than a few tenths of one percent.

1. varied by no more B)varied no more by C)not varied more by D)more varied by not

1. 为正确答案。

六、比较级+and+比较级（后面不可接 than 从句）表示“越来越⋯⋯”

如：

Spring has come,and the days are getting longer and longer. 春天来了，白天变得越来越长了。

**七、**the more⋯the more 表示“越是⋯⋯，就越⋯⋯”如：

The better your health is ,the more work you can do.你身体越好，就越能干更多的工作。

八、隐含比较级 有时比较级并不一定出现 than，这时通过上下文可暗示出，如：The price in Beijing is rising every day.（北京的物价一天比一天高。）