③ 作"如 (不如)......一样"解，引导方式状语从句或比较状语从句。He does not speak as the other people do. 他不像其他人那样肯说话。He is not so diligent as you. 他不如你勤奋。(so...as...只用于否定句。若为肯定句必须用as...as...)
④引导让步状语从句时，作"虽然"、"尽管" 解，这时，要将表语或状语提到主语之前，使句子部分倒装。如果表语是名词，放在句首时不能加冠词。Young as he is, he knows a lot. 尽管年轻，他懂得很多。Old man as he is, he still works hard. 尽管他是个老人，他仍然工作很努力。
(2) as用作代词
① 作关系代词，引导限制性定语从句，先行词前常有such，the same与之呼应，构成such...as，the same (...) as...。We'll make such computers as are needed in different branches of science. 我们将制造出科学的各部门所需要的那种计算机。/ I'm reading the same books as you. 我读的书与你读的书相同。
②引导非限制性定语从句，as常常作主语、定语、表语等，在这种情况下as指的是前面或后面的整个句子。The two cities are far away from each other, as you can see in the map. 正如你在地图上看见的那样，这两座城市相距甚远。/ As everybody knows, all that glitters is not gold. 大家都知道，闪光的东西不都是金子。
3) as if (as though) 用作连词，作"就像...似的""仿佛"解 (1) as if (as though)引起的方式状语从句或表语从句中动词一般用虚拟语气, be通常为were或was。如从句动作与主句动作同时发生，从句用一般过去时；若从句动作在主句动作之前发生，从句用过去完成时。Jane shouted in surprise as if she saw the land. 珍妮惊喊着，好像看见了陆地。/ Tom is talking about China as if he had been there. 汤姆正在谈着中国，好像他去过一样。
(2)若主句谓语动词为look，seem，taste，smell等词时，as if引导的表语从句常常使用陈述语气。 It looks as if it is going to rain. 看起来天好像耍下雨。/ This meat tastes as if it has already gone bad. 这肉尝起来好像已变坏了。
(3)当从句中主语和句子主语一致，从句谓语又包含动词be时，这个主语和be可以省略。He glanced about as if (he was) in search of something. 他四处打量着好像在搜寻什么。
(4) as if (as though)可以接一个不定式短语。He waved his hand to me as if to have something to tell me. 他向我挥了挥手好像有事要告诉我。
辨析：as，when与while
as，when，while作为连词，都有"当......的时候"的意思。* as常可与when或while通用，但它较强调主句和从句中的动作或事情同时发生。因此，常作"一面......一面......"解。 * while常表示一段较长的时间或一个过程，强调主句的动词和从句的动词所表示的动作或状态是同时发生的。用while引导的从句中用延续性动词。
As (When／While) I was walking down the street, l noticed a police car in front of Number 37. 我沿着大街往前走的时候，注意到37号门前停着一辆警车。/ When the clock struck twelve, all the lights went out. 钟敲12下时，灯全熄了。/ When I went into the lab, the professor was doing an experiment. 当我走进实验室时，那位教授正在做实验。/ Please keep quiet while others are studying. 别人在学习的时候，请保持安静。/ While I was writing letters last night, he was watching TV. 昨晚我在写信的时候，他在看电视。
误：As he is old, my teacher works hard.
正：Old as he is, my teacher works hard.
尽管我的老师年龄很大了，但是工作很努力。
误：So as to catch the early bus, he got up very early.
正：He got up very early so as to (in order to) catch the early bus. 他起早是为了赶早班车。
拓展：as a matter of fact实际上; as a result (of)结果; as far as就......而言；远至as follows如下as for至于，关于as long as只要; as well as还，也; as to至于，关于; as many as (表可数)和......一样多，达......之多
9. The science park is also home to a growing number of overseas Chinese who have grasped the opportunity to develop their ideas at home. 越来越多的海外华人抓住机会到国内来实现他们的理想。（p.3第三段第1行）
grasp的用法：(1) 抓住 v. grasp sb. by the arm 抓住某人的胳膊 (2) ([同]understand) 掌握，领会n. grasp sb.'s meaning 懂某人的意思 (3) n. [常用单数]紧握；把握；理解；理解力
辨析：grasp，grip，seize，snatch与grab
grasp抓紧 / grip紧握；比grasp更强 / seize抓紧；还有"夺过去强占"的含义 / snatch较突然迅速的"掠夺" / grab匆忙，以满有把握的动作抓住某事
(1) I grasped him by the arm. 我抓住他的手臂。
(2) The frightened girl gripped her mother's arm. 那受惊的女孩紧抓住她母亲的手臂。
(3) They seized all the belongings of the peasants. 他们抢走了农民所有的财物。
(4) The man snatched her bag and ran away. 那人抢了她的包逃跑了。
(5) Each of you may have a sweet, but don't grab. 你们每人可以吃一块糖，但不要抢。
拓展：beyond sb.'s grasp力量达不到 Grasp all, lose all. [谚]样样都要，全数失掉。within sb.'s grasp力量达得到
10. Zhongguancun made it possible for him to follow his dreams and help the country he loves. 中关村使他有可能实现自己的梦想，同时为他所热爱的国家做出自己的贡献。(p.3 第三段第3－4行) follow:
(1) vt. 遵照，遵循 Gandhi was married at the age of thirteen, following the local custom. 甘地按照当地的风俗，十三岁就结了婚。
(2) vt. 听从，服从 The soldiers must follow the officer's orders. 士兵们必须执行军官的命令。
(3) vt. 明白；懂 He spoke so fast that I could not follow him. 他说得太快，我听不懂他的话。
(4) vt. 沿着......前进 We followed the road to the top of the hill. 我们沿着这条路走到了小山顶。
(5) vt. 跟随 The children followed their mother into the
room. 孩子们跟着母亲进了房间。
The results are as follows ... 结果如下......。
to follow through a plan 实行计划 That's an interesting idea, and we'll certainly follow it up. 那是一个有意义的想法，我们一定要进一步予以研究。
拓展：as follows如下; follow through完成；把......进行到底; follow up追究，追查；(对......)采取进一步的行动
11. I studied abroad because I wanted to see more of the world and work with some of the top scientists in my field. 我到国外学习是因为我想多看看外边的世界，并在我所学的领域跟一些顶极科学家们一起工作。(p.3第四段 第1行)
more: (1) n. 较大量，较多量 I'm afraid I've eaten more than enough. 我怕我是吃得过多了。(2) adj. & adv. (many和much的比较级) 更多的(地)；较多的(地)；更This lesson is more difficult than that one. 这课比那课难些。They have more books than us. 他们的书比我们的多。We have more time than before. 我们比以前有较多的时间。
拓展：① more and more愈来愈多More and more people are learning how to use computers. 越来越多的人在学如何用计算机。② more or less或多或少，在一定程度上What he has said will be proved more or less right．他说的话或多或少是对的。③ more than多于; ...多She is more than thirty．她三十多岁了。④ no more = not...any more不再He smokes no more. (He didn't smoke any more.) 他不再吸烟了。⑤ no more than仅仅；同......一样不...... The writer wrote no more than two novels. 那位作家仅仅写了两部小说。This book is no more interesting than that one. 这本书和那本一样没趣。⑥ not more than 至多，不超过；不比......更There are not more than five students in the classroom. 教室里至多有五名学生。Lesson 2 is not more difficult than Lesson 3. 第二课不比第三课更难。⑦ once more (=once again) 再一次You'd better try it once more. 你最好再试一次 ⑧ 句型：The more...+主句the more...；The + 比较级... the + 比较级...越......就越...... The more I look at the picture the less I like it. 这张画我越看，我就越不喜欢它。
12. I was so happy. It was wonderful, like a dream come true. 我真高兴，这太棒了，就像梦想成真一样。(p.4 第三段 第1行)
(1) like doing sth. 喜欢做某事(经常性ai好) I like drawing and collecting stamps. 我喜欢画画和集邮。
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