21. in case that… 万一; 以防; in case of + n 万一

　　In case (that) John comes/ should come, please tell him to wait.

　　(in case that 后谓语用一般现在时或should +动词原型)

　　Please remind me about it in case I forget / should forget.

　　Please take my umbrella in case (that) it rains/ should rain.

　　In case of fire, what should we do?

　　22. 祈使句(表条件)+ or else/ or / otherwise+ 主句(表结果)….否则…,要不然….

　　Please call me up before you come, otherwise/ or else/ or we might be out.

　　Hurry up, or you will be late.

　　祈使句(表条件)+ and + 主句(表结果)

　　Give him an inch and he will take a mile.

　　Be united and cooperate with each other and only in this way can we save our earth.

　　23. as(so)…as…和…一样

　　Henry is as good a player as Peter (is).

　　He worked as fast as a skilled worker (did).

　　We will give you as much help as we can.

　　24. 形容词/副词比较级+than

　　注意: 形容词和副词的比较级前还可以加一个表示程度的修饰语,常用的修饰语是:

　　(1).a little, a bit, slightly稍微;一些

　　(2). Much, a lot, greatly, a great deal, far, by far….得多

　　(3). Still, even, rather 更

　　(4). Any一般用于疑问句,表示 ‘一些”; “稍微”

　　(5). 倍数或数量词.

　　This text is a little (a bit) more difficult than the other.

　　He has made far greater progress this term than he did last term.

　　With the development of society, people in China are a good deal richer than before.

　　He is two years older than = he is older than I by two years.

　　Asia is three times larger than Europe.

　　=Asia is three times as large as Europe.

　　=Asia is three times the size of Europe.

　　还应注意,当more 作为many, much 的比较级时,其修饰语分别是

　　(1).many, a few, + more + 可数名词复数

　　(2)much, a little , a bit, a great deal+ more + 不可数名词

　　(3).a lot, some, far, any +more+ 可数或不可数均可,more译作 “另外”

　　I’ve made a lot (many) more mistakes than you’ve

　　He has built up a large business and earned much more money than before.

　　25. by far 最….; 比….得多

　　注意:by far既可修饰比较级又可修饰最高级,注意by far在句中的位置.

　　He worked harder by far than his elder brother.

　　He is by far the taller of the two basketball players.

　　He is by far the tallest of all the players on the team.

　　His explanation is by far clearer than the old one.

　　26. the +比较级…., the +比较级……越…,越…..

　　The more you need, the better you understand.

　　The higher up you go, the colder it becomes.

　　A body weighs less the further it gets from the surface of the earth.

　　=The further it gets from the surface of the earth, the less the body weights.

　　The sooner, the better.

　　27. no +比较级+ than 表示 “ A和B 都不……”

　　Not + 比较级 + than 表示 “ A不如B……”

　　This book is no more interesting than that one.

　　He works no harder than I .他和我都不用功.

　　He doesn’t work harder than I .他不如我用功

　　More than 不仅仅 no more than 只不过,仅仅 not more than = at most 不多于

　　There are no more than ten students in the classroom.

　　There are not more than ten students in the classroom.

　　He is no more than a child, so I don’t take him too seriously.

　　In our students’ eyes, he is more than a teacher, he is more like our friend.

　　More + adj/ n + than + adj / n 与其说……倒不如说……

　　He is more of a student than of a teacher.与其说他是个老师,倒不如说他是个学生.

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

　　28. superior 较高的,上好的, 出众的,高傲的

　　Senior 年长的,资格较老的,地位较高的,高级的

　　Junior 年少的,下级的,和to搭配

　　This western restaurant is superior to the one we went to last week.

　　He is three years junior to me= He is junior to me three years.

　　She is senior to everyone else in the company.

　　29. so + adj / adv + that ; such ( a/an ) + adj + that “如此…..以至于…..”引导结果状语从句.

　　His English was so limited that he couldn’t understand what the native speakers said.

　　He was so devoted to his students that he often fell ill from overworking.

　　It was such warm weather that we went swimming.

　　Table tennis is such a popular game that people all over the world play it.

　　还应注意:

　　(1)当名词前有many /much /few / little修饰时,

　　用so+ n = that结构.即so many/ much/few/ little+n+that…

　　There were so many people in the street watching the fire that firefighters couldn’t get close to the building.

　　The Westerners eat so much fat and sugar that they put on weight easily.

　　The country has so little coal that it has to import large quantities of coal.

　　There are so few fish in the pool that we can’t fish them easily.

　　(2)such+ a/ an + adj. + n + that = so + adj.+ a/ an +n + that

　　He is such an honest person that you can depend on him when you’re in trouble.

　　He is so honest a person that you can depend on him when you’re in trouble.

　　(3)由so…that和such…that引导的结果状语从句的倒装结构.当so和其后的形容词或副词; such 连词后的名词放在句首时,主句使用倒装结构

　　Such great progress has he made in his studies that we all admire him.

　　(4)such…that 句型的特殊性:such后可以不出现adj和n,也可以倒装.

　　His behavior was such that all his friends deserted him.

　　=Such was his behavior that all his friends deserted him.

　　The force of the explosion was such that all the windows were broken.

　　=Such was the force of the explosion that all the windows were broken.

　　30. in order that ; so that (为了….)引导目的状语从句

　　He got up early in order that / so that he could catch the first bus.

　　He closed all the windows while driving so that he shouldn’t catch cold.

　　(so that 否定句要用shouldn’t)

　　So that 引导结果状语从句

　　对比: (1).he set off early, so that he caught the first bus.

　　(2).he set off early so that he could catch the first bus.

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