高中英语：Module5 A lesson in a lab-grammar素材（外研版必修1）

Module5 A Lesson in a Lab- Grammar 素材1． 形容词和副词的比较等级的用法：1） 原级比较：表示两者程度相同。用句型表示：(倍数+)as+adj./adv.原级+ as …,否定句式：not +(倍数+)as/so+ adj./adv.原级+as…,如:e.g. Dick is as tall as his brother. I have never seen a person as/so clever as he is.2） 比较级：A.表示 A 超过 B。此时使用句型： A is (倍数+)形容词和副词的比较等级+than+B 如：Our classroon is brighter than yours.Dogs run faster than rabbits.I don’t think maths is more important than physics.B.表示 A 不如 B。用句型：less + adj./adv.原级表示。如：Rabbits ran less fast than dogs.Jenny is less clever than her sister.It rains less often here in autumn than in spring.3） A is three(four …)times the size(height,length,width,depth,…)of B.e.g. The new building is four times the size of the old one.注意：一倍用：once 二倍用：twice/double 三倍及以上使用：three/four …times.4） 形容词和副词的比较等级的特殊用法：A.“越来越……”e.g. You are growing taller and taller. English is becoming more and more important.B. “越……,越……”e.g. The harder you push, the more quickly the cart will move. The more careful you are, the better you will do in the exam.C.“两者之中比较……的一个”：用 of 引导，比较级前加上 the,如：Jack is the taller of the two brothers.D.no more than 表示“只”，“不超过，不多于”相当于 only.e.g. She has on more than one yuan in her pocket.用心 爱心 专心E.no more …than 表示“……一样不……”；而 not more …than 则表示“不像……那样”，相当于“not so … as ”.e.g. He is feeling no better than yesterday.他觉得不比昨天好多少。（即今天昨天感觉都不好） She is not more generous than her younger sister. 她不如她妹妹那样慷慨大方。=She is not so generous as her young sister.F.no less than 表示“多达，……那样多；至少，起码”，相当于 as much (or many )as, 蕴含...