1）比较的成分要对等。
　　【例如】
　　He is more concerned about others than about himself. My father is in better health now than last year. The population of China is larger than that of America.
　　2）the +比较级……，the +比较级……意为“越……，越……”。前面部分是从句，后面部分是主句。
　　【例如】
　　The harder you work, the more successful you will be. The ear

　　1）fairly, quite, rather表示“十分，非常”。fairly语气最弱，放在不定冠词之后；quite语气较强，放在不定冠词之前；rather语气最强，可放在不定冠词前后，也可放在比较级前和too之前。
　　【例如】
　　This is a fairly interesting story. I want to tell it to my friends.
　　You have made quite a few mistakes in you writing. (quite a few =many)The weather is rather colder today than I have expected. The s

　　【例如】
　　Floods cause billions of dollars worth of property damage ____. (CET-4 1998,6)
　　A) relatively B) actually
　　C) annually D) comparatively
　　relatively：相对地，比较地；actually：实际上；annually：每年；comparatively：比较地；根据句意：每年洪水都造成价值数十亿美元的财产损失，应选择B。
　　These goods are ____for export, though a few of them may be sol

　　1）修饰形容词或副词时，通常放在前面。
　　2）当句子的谓语动词是行为动词时，频度副词一般放在谓语动词之前。句中有be或助动词、情态动词时，放在其后。
　　【例如】
　　I often go to the cinema on weekend with my husband. I can hardly understand him for what he said was really confusing.have never been abroad until now.
　　3）程度副词修饰形容词或副词，通常放在被修饰的形容词之前。但是enough总是放在所修饰的形容词或副词之后。
　　【例如】

　　英语中有些音、形、义非常接近的形容词，辨析这些形容词是掌握形容词用法的重点，也是大学英语四级考试中“词汇与结构”的一个重点项目。
　　【例如】
　　No one imagined that the apparently ____professor was actually a criminal.
　　A) respectful B) respectable
　　C) respective D) respecting
　　respectful表示“尊敬他人的”；respectable表示“受人尊敬的”；respective则表示“各自的”；respecting常用作介词，表示“关于”。根据句意：没有人想

　　有几个形容词修饰同一名词时，词序无固定规律，一般的顺序为：1）限定词（冠词/代词/数词）→2）性质→3）大小/形状/新旧/年龄/颜色→4）名词性定语（包括动名词）→5）名词。
　　【例如】
　　China is a great, modernized socialist country.
　　Nancy is reading an old, exciting, romantic love story.
　　Mary has just bought herself a pretty green cotton dress.
　　My sister knew a tall intelligent young

　　1）有些形容词（包括已变为形容词的分词）可以接不定式。
　　【例如】
　　I am eager to see him and tell him the truth. I am sure to pass the exam because I have made very good preparation.
　　这样用的形容词多是表示感情的。如：content（满意的），afraid（害怕的），anxious（渴望的），lucky（幸运的），careful（小心的），inclined（有意的），willing（情愿的），sorry（难过的），eager（热切的），sure（肯定的），determined（有决心的），foolish（愚蠢的

　　1）很多以a开头的形容词，如asleep, afraid, awake, alone, aware, alive, ablaze, alike等，一般只作表语。
　　【例如】
　　He was so tired that he soon fell asleep. Whether he was alive or dead in the earthquake is still unknown.
2）这类形容词有时可以放在名词后作后置定语。
　　【例如】
　　He is one of the persons alive after the flood. The old man was the only pe

      单个形容词修饰名词的时候，一般前置。但是下列情况下形容词却要后置。
　　1）当形容词修饰由some, no, any，加上thing, body, one构成的复合代词时，总是后置。
　　【例如】
　　I have something urgent to do, so I have to go now.
　　There must be something wrong with him.
　　2）以able或ible结尾的形容词与all, every, only或形容词最高级连用时，常常后置。
　　【例如】

　　前节说过，分词（短语）有意义上的逻辑主语，它或是句子的主语，或者另有自己的主语，不然称这种分词为“悬垂分词”，这样的句子一般认为是不能接受或错误的。
　　【例如】
　　※Looking out of the window of our hotel room, there are lots of mountains.（这句话听起来好象是那些山从窗户往外看。）
　　※Admired by everybody, dozens of letters reached the veteran soldier.（这句话听起来好象是信件被赞扬。）
　　※Sitting under an apple tree one night, an

　　在分词作状语时，其逻辑主语一般应与句子的主语一致。如果不一致的话，分词前面可以带有自己的逻辑主语（名词或代词），构成分词的独立结构（或称为带逻辑主语的分词结构）。分词独立结构可表示伴随情况、陪衬动作、附加说明以及表示时间、原因、条件等。
　　【例如】
　　The moon has no light of its own, only sunlight shining on it. （附加说明）
　　She rushed out the room, the little baby carried in her arms. （伴随动作）
　　Maggie ran back to the kitchen, eggs held

　　现在分词的完成被动式表示分词的动作发生在谓语的行为之前，且动作由逻辑主语所承受（即与逻辑主语是被动关系）。
　　【例如】
　　Having been given such a good chance, he planned to work hard.
　　Having been experimented several times, this new product will be putsintosmass production.
　　All the compositionsshavingsbeen written and collected, the teacher dismissed the students

　　现在分词的完成式主要用在状语中，表示这个动作在谓语所表示的动作之前完成。
　　【例如】
　　Having succeeded in the last examination, she was more confident of another success in the coming one.
　　Having found the cause, they were able to propose a remedy.
　　Having finished his homework, the boy went to play computer game.Notshavingsmade adequate preparati

　　在表示一个被动动作时，如果这个动作正在进行，或是与谓语表示的动作同时发生，我们可以用现在分词的被动形式。
　　【例如】
　　The bridge being built now will be completed in three months.This is one of the experiments being carried on in our laboratory.
　　Being surrounded by the students, the teacher was answering questions one by one.
　　If I correct someone, I will do it wi

　　1）我们不知道或没有必要说明动作的执行者是谁的时候（这时不带by引起的短语）。
　　Printing was introducedsintosEurope from China. Look! There is nothing here. Everything has been taken away.
　　2）当我们强调或兴趣在动鞯某惺苷呤保ㄕ馐笨纱鴅y引起的短语）。
　　The song was composed by a student. A good time was had by all.
　　3）当我们出于礼貌、措辞圆通等方面的考虑不愿说出动作的执行者是谁时。
　　You are request