1、 (for a teenager) to drive a car without a license.(2) It be adj. of sb. to do sth.此处adj. 通常为描述人的形容词：kind, unkind, nice, rude, cruel, considerate, thoughtful, thoughtless, careful, careless, silly, foolish, stupid, clever, wise, crazy.例 Its kind of you to help me with the problem.(3) It替代作主语的动名词的常见句
2、型Its no good/use doingIts (well)worth doingIts (well)worth ones while doing/to doIts (well)worth while doing/ to do例 Its no use crying over spilt milk.2. It替代作主语的从句常见句型(1) It is + noun +从句例 It is no secret that the president wants to have a second term at office.(2) It is adj. +clauseIts surprising
3、that (should)竟然Its a pity/shame that(should)竟然例 Its important that you should apologize to her for your rudeness.(=Its of much importance that you should apologize to her for your rudeness.)(3) It verb sb. + clause= It is v-ing + clauseIt+surprise/delight/interest/disappoint/worry/disturb/annoy/amaz
4、e/bother/concern/frighten/please/anger sb. that例 It worried me that she drove so fast.(= It was worrying that she drove so fast.)(4) It verb (to sb.) that= sb/sth verb to do(verb = appear, seem, come about, emerge, follow, chance, happen, occur, transpire, turn out , work out)例 It (so) happened/chan
5、ced that they were out.(= They happened/chanced to be out.)(5) It is v-ed that=sb/sth is to do(verb=say, report, think, believe, hope, expect, agree, accept, decide, determine, intend, plan, understand, know)例 It is said that the couple have gotten divorced.(=The couple are said to have gotten divor
6、ced.)(6) It is v-ed that (should)(verb=demand, request, require, order, suggest, advise, recommend例 It is suggested that they should begin with the third question.三、It作主语的句型1. It takes sb. to do(=sb takesto do)某人用多长时间做某事例 It took the men a week to mend our roof.(= The men took a week to mend our roo
7、f.)2. Its (just)(un)like sb. to do(不)像某人做某事的风格例 It was (just) like him to think of helping us.3. Its (about/high) time that should /v-ed是该做某事的时候了例 Its(about/high) time that we should take action.4. Its the x-th time (that) have v-ed第几次做某事了例 Its the third time that he has failed the driving test.5. I
8、t is/has been since continuous v-ed(延续性动词) 某动作已有多长时间不发生了例 Its 10 years that he lived here6. It was(not) before过(不)了多长时间某动作发生了例 It was not long before they arrived.四、It 作形式宾语用来替代作宾语的从句、动词不定式、动名词，而把真正作宾语的从句、动词不定式、动名词置于句尾。It 作形式宾语的常见句型：1. verb+ it+ adj./noun (for/of) to do/clause (verb=think, believe,
9、suppose, consider, feel, make, keep)例 I think it hard for you to do the task on your own./I think it hard that youll do the task on your own.2. verb+it+adj./noun (ones) doing (adj.=useless/worth/worthwhile)(noun=no use/no good/worth ones while/a waste of time/money/energy/words) (verb=think, believe
10、, suppose, consider, feel, make, keep)例 Ill make it worth your while telling me about his secret.3. verb+it+ important/unimportant/necessary/unnecessary/natural/essential that (should)verb+it+of much/great/no/little importance that(should)(verb=think, believe, suppose, consider, feel, make, keep)例 I
11、 think it important that you (should) attendthe conference.4. verb + it+ as+ noun/adj.+ clause (verb=accept, regard, take, see, view)例 The lecturer takes it as encouraging when so many students attend his lecture.5. v. +it + prep. + thatowe it to sb. that把归功于leave it to sb that把留给某人去做take it for gra
12、nted that 想当然keep it in mind that例 Dont bother to arrange anything. Just leave it to me to sort out.6. It用在不能直接跟宾语从句的动词后面，尤其是表示好恶的动词后，enjoy, like, love, dislike, resent, hate, dont mind, be fond of, feel like, see to 宾语从句紧跟it之后例 I hate it you can swim so well and I cant.7. It用在不能直接跟宾语从句的介词后面，宾语从句紧跟i
13、t之后(except that例外)例 Im for it that you will follow their advice.五、强调句型It is/was+被强调部分+ that(who) 强调句型用来强调谓语动词以外的任何句子成分。当被强调部分是人时也可以用who。在使用强调句型时需注意以下几点：1. 请注意强调句型的特殊疑问句例 When was it that he changed his mind to take part in the activity?2. 在强调原因状语从句时，只能强调由because所引导的从句例 It was because he was ill that
14、 he didnt come to school yesterday.3. 在强调not until结构时必须把not与until一起放到被强调的位置上例 It was not until she took off her dark glasses that I realized she was my brother.4. 注意强调句型与定语从句的区别例 It was at 7 oclock that he came here yesterday.( 强调句型)It was 7 oclock when he came here yesterday.(定语从句)六、It 常用的固定搭配1. ma
15、ke it(1).在口语当中相当于succeed,表示：成功、做到、说定、赶上、及时到达例 Its hard to make it to the top in show business.(2).在口语中相当于fix the date for,表示“约定好时间”例 Shall we meet next week?OK. We just make it next Saturday.2. as it is(1).相当于in fact, in reality表示“事实上，实际情况是”例 We had planed to finish the task today, but as it is we p
16、robably wont finish it until next week.(2).相当于方式状语从句，表示“照原样”例 Leave the table as it is.3. as it were 相当于as one might say, that is to say, 表示“也就是说，可以说，换句话说”例 He is, as it were, a modern Sherlock Holmes.4. if it werent for/if it hadnt been for用来引导虚拟语气，相当于without, or but for, 表示“如果不是，要不是”例 If it werent
17、 for Tom, I wouldnt be alive today.5. thats it(1). 相当于Thats all. Thats so much. 表示“至此为止，没有别的了”例 You can have one more sweet, and thats it.(2). 相当于 Thats right.表示“对啦”例 I guess the key to the problem is thechoice “A”Thats it.6. catch it 在口语中，相当于be punished/scolded for doing sth. wrong. 表示“因做错事而挨骂，受责备，
18、受批评，受惩罚”例 Well really catch it form our teacher if were late for class again.7. have it(1).相当于say, insist表示“说，主张，表明，硬说”例 Rumour has it that they are getting divorced.(2).相当于get to know something,表示“了解，知道，获悉”例 I had it from John that she was going abroad.8. have what it takes在口语中，相当于be well qualified
19、 for, 表示“具有成功的条件”例 You can take it from me that your daughter has what it takes to be a star.9. so it seems / appears.10. Keep at it! (Dont give up!)相当于go on,表示“继续做，不放弃”例 My teacher asked me to keep at it.11. Go it! (Go on!) 拼命干, 莽撞12. Now you have done it! (You have done sth. wrong.)13. Now youll c
20、atch it! (Youll be punished.)14. As it happened, 在口语中，相当于its a pity that, 表示“真不凑巧，真遗憾”例 As it happened, they were out.15. As it turned out,在口语中，相当于it was found to be in the end, 表示“最后被证明是”例 As it turned out, his statement was false.16. Such as it is(they are) 在口语中，相当于although it may not be worth muc
21、h, 表示“虽然没有多大价值”例 You can borrow my exam notebook, such as it is.17. Take it/things easy. 相当于Dont worry or dont hurry. 用来劝告别人，表示“不要慌，别担心，存住气”例 Take it easy! He will do it well.18. Take it from me.在口语中，相当于believe me what I say.表示“请相信我的话，我敢担保”例 You can take it from me that he will make it this time.19.
22、 For what it is worth在口语中，相当于although Im not sur50 个句子就可以记完 7000 单词！单词是我们心中永远的痛，从 100 套真题中提炼而出的经典句子 1.Typical of the grassland dwellers of the continent is the American antelope, or pronghorn. 1. 美洲羚羊，或称叉角羚，是该大陆典型的草原动物。 2.Of the millions who saw Haley s comet in 1986, how many people will live long
23、enough to see it return in the twenty-first century. 2.1986 年看见哈雷慧星的千百万人当中，有多少人能够长寿到足以目睹它在二十一世纪的回归呢？ 3.Anthropologists have discovered that fear, happiness, sadness, and surprise are universally reflected in facial expressions. 3. 人类学家们已经发现，恐惧，快乐，悲伤和惊奇都会行之于色，这在全人类是共通的。 4. Because of its irritating e
24、ffect on humans, the use of phenol as a general antiseptic has been largely discontinued. 4. 由于苯酚对人体带有刺激性作用，它基本上已不再被当作常用的防腐剂了。 5.In group to remain in existence, a profit-making organization must, in the long run, produce something consumers consider useful or desirable. 5. 任何盈利组织若要生存，最终都必须生产出消费者可用或
25、需要的产品。 6.The greater the population there is in a locality, the greater the need there is for water, transportation, and disposal of refuse. 6. 一个地方的人口越多，其对水，交通和垃圾处理的需求就会越大。 7.It is more difficult to write simply, directly, and effectively than to employ flowery but vague expressions that only obscu
26、re one s meaning. 7. 简明，直接，有力的写作难于花哨，含混而意义模糊的表达。 8.With modern offices becoming more mechanized, designers are attempting to personalize them with warmer, less severe interiors. 8. 随着现代办公室的日益自动化，设计师们正试图利用较为温暖而不太严肃的内部装饰来使其具有亲切感。 9.The difference between libel and slander is that libel is printed whil
27、e slander is spoken. 9. 诽谤和流言的区别在于前者是书面的，而后者是口头的。 10.The knee is the joints where the thigh bone meets the large bone of the lower leg. 10. 膝盖是大腿骨和小腿胫的连接处。 11.Acids are chemical compounds that, in water solution, have a sharp taste, a corrosive action on metals, and the ability to turn certain blue
28、vegetable dyes red. 11. 酸是一种化合物，它在溶于水时具有强烈的气味和对金属的腐蚀性，并且能够使某些蓝色植物染料变红。 12.Billie Holiday s reputation as a great jazz-blues singer rests on her ability to give emotional depth to her songs. 12.Billie Holiday s 作为一个爵士布鲁斯乐杰出歌手的名声建立在能够赋予歌曲感情深度的能力。 13.Essentially, a theory is an abstract, symbolic repre
29、sentation of what is conceived to be reality. 13. 理论在本质上是对认识了的现实的一种抽象和符号化的表达。 14.Long before children are able to speak or understand a language, they communicate through facial expressions and by making noises. 14. 儿童在能说或能听懂语言之前，很久就会通过面部表情和靠发出噪声来与人交流了。 15.Thanks to modern irrigation, crops now grow
30、 abundantly in areas where once nothing but cacti and sagebrush could live. 15. 受当代灌溉 ( 技术设施 ) 之赐，农作物在原来只有仙人掌和荞属科植物才能生存的地方旺盛的生长。 16.The development of mechanical timepieces spurred the search for more accurate sundials with which to regulate them. 16. 机械计时器的发展促使人们寻求更精确的日晷，以便校准机械计时器。 17.Anthropology
31、is a science in that anthropologists use a rigorous set of methods and techniques to document observations that can be checked by others. 17. 人类学是一门科学，因为人类学家采用一整套强有力的方法和技术来记录观测结果，而这样记录下来的观测结果是供他人核查的。 18.Fungi are important in the process of decay, which returns ingredients to the soil, enhances soil
32、 fertility, and decomposes animal debris. 18. 真菌在腐化过程中十分重要，而腐化过程将化学物质回馈于土壤，提高其肥力，并分解动物粪便。 19.When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time. 19. 音叉被敲击时，产生几乎纯质的音调，其音量经久不衰。 20.Although pecans are most plentiful in the southeastern part of
33、the United States, they are found as far north as Ohio and Illinois. 20. 虽然美洲山河桃树最集中于美国的东南部但是在北至俄亥俄州及伊利诺州也能看见它们。 21.Eliminating problems by transferring the blame to others is often called scape-goating. 21. 用怪罪别人的办法来解决问题通常被称为寻找替罪羊。 22.The chief foods eaten in any country depend largely on what grow
34、s best in its climate and soil. 22. 一个国家的主要食物是什么，大体取决于什么作物在其天气和土壤条件下生长得最好。 23.Over a very large number of trials, the probability of an event s occurring is equal to the probability that it will not occur. 23. 在大量的实验中，某一事件发生的几率等于它不发生的几率。 24.Most substance contract when they freeze so that the densit
35、y of a substance s solid is higher than the density of its liquid. 24. 大多数物质遇冷收缩，所以他们的密度在固态时高于液态。 25.The mechanism by which brain cells store memories is not clearly understood. 25. 大脑细胞储存记忆的机理并不为人明白。 26.By the middle of the twentieth century, painters and sculptors in the United States had begun to
36、 exert a great worldwide influence over art. 26. 到了二十一世纪中叶，美国画家和雕塑家开始在世界范围内对艺术产生重大影响。 27.In the eastern part of New Jersey lies the city of Elizabeth, a major shipping and manufacturing center. 27. 伊丽莎白市，一个重要的航运和制造业中心，坐落于新泽西州的东部。 28.Elizabeth Blackwell, the first woman medical doctor in the United S
37、tates, founded the New York Infirmary, an institution that has always had a completely female medical staff. 28.Elizabeth Blackwell，美国第一个女医生，创建了员工一直为女性纽约诊所。 29.Alexander Graham Bell once told his family that he would rather be remembered as a teacher of the deaf than as the inventor of the telephone
38、. 29.Alexander Graham Bell 曾告诉家人，他更愿意让后人记住他是聋子的老师，而非电话的发明者。 30.Because its leaves remain green long after being picked, rosemary became associated with the idea of remembrance. 30. 采摘下的迷迭香树叶常绿不衰，因此人们把迷迭香树与怀念联系在一起。 31.Although apparently rigid, bones exhibit a degree of elasticity that enables the sk
39、eleton to withstand considerable impact. 31. 骨头看起来是脆硬的，但它也有一定的弹性，使得骨骼能够承受相当的打击。 32.That xenon could not FORM chemical compounds was once believed by scientists. 32. 科学家曾相信：氙气是不能形成化合物的。 33.Research into the dynamics of storms is directed toward improving the ability to predict these events and thus t
40、o minimize damage and avoid loss of life. 33. 对风暴动力学的研究是为了提高风暴预测从而减少损失，避免人员伤亡。 34.The elimination of inflation would ensure that the amount of money used in repaying a loan would have the same value as the amount of money borrowed. 34. 消除通货膨胀应确保还贷的钱应与所贷款的价值相同。 35.Futurism, an early twentieth-century
41、 movement in art, rejected all traditions and attempted to glorify contemporary life by emphasizing the machine and motion. 35. 未来主义，二十世纪早期的一个艺术思潮。拒绝一切传统，试图通过强调机械和动态来美化生活。 36.One of the wildest and most inaccessible parts of the United States is the Everglades where wildlife is abundant and largely
42、protected. 36.Everglades 是美国境内最为荒凉和人迹罕至的地区之一，此处有大量的野生动植物而且大多受 ( 法律 ) 保护。 37.Lucretia Mott s influence was so significant that she has been credited by some authorities as the originator of feminism in the United States. 37.Lucretia Mott s 的影响巨大，所以一些权威部门认定她为美国女权运动的创始人。 38.The activities of the intern
43、ational marketing researcher are frequently much broader than those of the domestic marketer. 38. 国际市场研究者的活动范围常常较国内市场研究者广阔。 39.The continental divide refers to an imaginary line in the North American Rockies that divides the waters flowing into the Atlantic Ocean from those flowing into the Pacific. 39. 大陆分水岭是指北美洛矶山脉上的一道想象线，该线把大西洋流域和太平洋流域区分开来。 40.Studies of the gravity field of the Earth indicate that its crust and mantle yield when unusual weight
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