50个句子记忆个句子记忆个句子记忆个句子记忆3500单词单词单词单词 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 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 effect 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 obscure 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 while 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 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. (give something to something) 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。

2. 求英语四级高频词汇和一些作文经典句子

这是我们老师总结的希望可以帮到你！以下是短文写作中使用率最高、覆盖面最广的基本句式，每组句式的功能相同或相似，可根据自己的情况选择其中的1-2个，做到能够熟练正确地仿写或套用。

1.表示原因 1)There are three reasons for this. 2)The reasons for this are as follows. 3)The reason for this is obvious. 4)The reason for this is not far to seek. 5)The reason for this is that。 6)We have good reason to believe that。

例如： There are three reasons for the changes that have taken place in our life.Firstly, people's living standard has been greatly improved.Secondly, most people are well paid, and they can afford what they need or like.Last but not least, more and more people prefer to enjoy modern life. 注：如写第一个句子没有把握，可将其改写成两个句子。如：Great changes have taken place in our life. There are three reasons for this.这样写可以避免套用中的表达失误。

2.表示好处 1)It has the following advantages. 2)It does us a lot of good. 3)It benefits us quite a lot. 4)It is beneficial to us. 5)It is of great benefit to us. 例如： Books are like friends.They can help us know the world better, and they can open our minds and widen our horizons.Therefore, reading extensively is of great benefit to us. 3.表示坏处 1)It has more disadvantages than advantages. 2)It does us much harm. 3)It is harmful to us. 例如： However, everything divides into two.Television can also be harmful to us.It can do harm to our health and make us lazy if we spend too much time watching television. 4.表示重要、必要、困难、方便、可能 1)It is important(necessary, difficult, convenient, possible)for sb.to do sth. 2)We think it necessary to do sth. 3)It plays an important role in our life. 例如： Computers are now being used everywhere, whether in the government, in schools or in business.Soon, computers will be found in every home, too.We have good reason to say that computers are playing an increasingly important role in our life and we have stepped into the Computer Age. 5.表示措施 1)We should take some effective measures. 2)We should try our best to overcome(conquer)the difficulties.3)We are supposed (thought, suggested, advised, recommended) to 6.表示变化 1)Some changes have taken place in the past five years. 2)A great change will certainly be produced in the world's communications. 3)The computer has brought about many changes in education. 例如： Some changes have taken place in people's diet in the past five years.The major reasons for these changes are not far to seek.Nowadays, more and more people are switching from grain to meat for protein, and from fruit and vegetable to milk for vitamins. 好的变化 change for better, change for worse.7.表示事实、现状 1)We cannot ignore the fact that。 2)No one can deny the fact that。

3)There is no denying the fact that。 4)This is a phenomenon that many people are interested in. 5)However, that's not the case. 例如： We cannot ignore the fact that industrialization brings with it the problems of pollution.To solve these problems, we can start by educating the public about the hazards of pollution.The government on its part should also design stricter laws to promote a cleaner environment. 8.表示比较 1)Compared with A,B。

2)I prefer to read rather than (more than ) watch TV. 3)There is a striking contrast between them. 例如： Compared with cars, bicycles have several advantages besides being affordable.Firstly, they do not consume natural resources of petroleum.Secondly, they do not cause the pollution problem.Last but not least, they contribute to people's health by giving them due physical exercise. 9.表示数量 1)It has increased(decreased)from。to。

2)The population in this city has now increased (decreased)to 800,000. 3)The output of July in this factory increased by 15% compared with that of January. 例如： With the improvement of the living standard, the proportion of people's income spent on food has decreased while that spent on education has increased. 再如： From the graph listed above, it can be seen that student use of computers has increased from an average of less than two hours per week in 1990 to 20 hours in 2000. 注：“From the graph listed above, it can be seen that” 10.表示看法 1)People have(take, adopt, assume)different attitudes towards sth. 2)People have different opinions on this problem. 3)People take different views of(on)the question. 4)Some people believe that。Others argue that。

（“态度”之后考虑使用同位语从句） 例如： People have different attitudes towards failure.Some believe that failure leads to success. Every failure they experienc。

3. 请发给我一些写四级英语作文常用的句子和短语

英语写作最TOP80个使用高频词搭配 1. 随着经济的繁荣 with the booming of the economy2. 随着人民生活水平的显著提高 with the remarkable improvement of people's living standard3. 先进的科学技术 advanced science and technology 4. 为我们日常生活增添了情趣 add much spice / flavor to our daily life 5. 人们普遍认为 It is commonly believed that… 6. 我同意前者（后者）观点 I give my vote to the former / latter opinion. 7. 引起了广泛的公众关注 Sth. has aroused wide public concern. / Sth has drawn great public attention. 8. 不可否认 It is undeniable that… 9. 热烈的讨论/ 争论 a heated discussion / debate 10. 有争议性的问题 a controversial issue 11. 就我而言/ 就个人而言 As far as I am concerned, / Personally, 12. 有充分的理由支持 be supported by sound reasons 13. 双方的论点 argument on both sides 14. 发挥日益重要作用 play an increasingly important role in… 15. 对…必不可少 be indispensable to … 16. 正如谚语所说 As the proverb goes: 17. 对…产生有利/不利的影响 exert positive / negative effects on… 18. 利远远大于弊 The advantages far outweigh the disadvantages. 19. 导致，引起 lead to / give rise to / contribute to / result in 20. 复杂的社会现象 a complicated social phenomenon 21. 责任感 / 成就感 sense of responsibility / achievement 22. 竞争与合作精神 sense of competition and cooperation 23. 开阔眼界 widen one's horizon / broaden one's vision 24. 学习知识和技能 acquire knowledge and skills 25. 经济/心理负担 financial burden / psychological burden 26. 考虑到诸多因素 take many factors into consideration 27. 从另一个角度 from another perspective 28. 做出共同努力 make joint efforts 29. 对…有益 be beneficial to / be conducive to… 30. 为社会做贡献 make contributions to the society 31. 打下坚实的基础 lay a solid foundation for… 32. 综合素质 comprehensive quality 33. 致力于/ 投身于 be committed / devoted to… 34. 应当承认 Admittedly, 35. 不可推卸的义务 unshakable duty 36. 满足需求 satisfy / meet the needs of。

37. 可靠的信息源 a reliable source of information 38. 宝贵的自然资源 valuable natural resources 39. 因特网 the Internet （一定要由冠词，字母I 大写） 40. 方便快捷 convenient and efficient 41. 在人类生活的方方面面 in all aspects of human life 42. 环保的材料 environmentally friendly materials 43. 社会进步的体现 a symbol of society progress 44. 大大方便了人们的生活 Sth has greatly facilitated people's lives. 45. 对这一问题持有不同态度 hold different attitudes towards this issue 46. 在一定程度上 to some extent 47. 理论和实践相结合 integrate theory with practice 48. …必然趋势 an irresistible trend of… 49. 日益激烈的社会竞争 the increasingly keen social competition 50. 眼前利益 immediate interest/ short-term interest 51. 长远利益 long-tem interest 52. …有其自身的优缺点 … has its own merits and demerits / pros and cons 53. 对…有害 do harm to / be harmful to / be detrimental to 54. 交流思想/ 情感/ 信息 exchange ideas / emotions / information 55. 跟上…的最新发展 keep pace with / keep abreast with the latest development of… 56. …的健康发展 the healthy development of…57. 重视 attach great importance to… 58. 社会地位 social status 59. 把时间和精力放在…上 focus one's time and energy on… 60. 扩大知识面 expand one's scope of knowledge 61. 身心两方面 both physically and mentally 62. 有直接/间接关系 be directly / indirectly related to… 63. 导致很多问题 give rise to / lead to / spell various problems 64. 可以替代think的词 believe, claim, maintain, argue, insist, hold the opinion / belief / view that 65. 缓解压力/ 减轻负担 relieve stress / burden 66. 优先考虑/发展… give (top) priority to sth. 67. 与…比较 compared with…/ in comparison with 68. 可降解的/可分解的材料 degradable / decomposable material 69. 代替 replace / substitute / take the place of 70. 提供就业机会 offer job opportunities 71. 反映了社会进步的 mirror the social progress/advance 72. 增进相互了解 enhance / promote mutual understanding 73. 充分利用 make full use of / take advantage of 74. 承受更大的工作压力 suffer from heavier work pressure 75. 保障社会稳定和繁荣 guarantee the stability and prosperity of our society 76. 更多地强调 put more emphasis on… 77. 适应社会发展 adapt oneself to the social development 78. 实现梦想 realize one's dream 79. 主要理由列举如下 The main / leading reasons are listed as follows: 80. 我们还有很长的路要走 We still have a long way to go.希望可以帮到你·······。

4. 英语四级必考句型

大学英语四级必考句型71种1. It作先行主语和先行宾语的一些句型 She had said what it was necessary to say. 2. 强调句型 It is not who rules us that is important, but how he rules us. 3. "All+抽象名词"或"抽象名词+itself"(very+形容词) He was all gentleness to her. 4. 利用词汇重复表示强调 A crime is a crime a crime. 5. "something(much)of"和"nothing(little)of" "something of"相当于"to some extent"，表示程度。

在疑问句或条件从句中，则为"anything of "，可译为"有点"，"略微 等。""译为毫无"，"全无"。

"much of"译为"大有"，"not much of"可译为"算不上"，"称不上"，"little of"可译为"几乎无"。something like译为"有点像，略似。

" They say that he had no university education, but he seems to be something of a scholar. 6. 同格名词修饰是指of前后的两个名词都指同一个人或物，"of"以及它前面的名词构一个形容词短语，以修饰"of"后面的那个名词。如"her old sharper of a father"，可 译为："她那骗子般的父亲"。

Those pigs of girls eat so much. 7. as…as…can(may)be It is as plain as plain can be. 8. "It is in(with)…as in(with)" It is in life as in a journey. 9. "as good as…"相等于，就像，几乎如；实际上，其实，实在。 The merchant as good as promised the orphan boy, that he would adopt him. 10."many as well…as"和"might as well …as" "many as well…as"可译为"与其……，不如……，更好"，"以这样做……为宜"，"如同……，也可以……"等等。

"might as well …as"表示不可能的事，可译为"犹如……"，"可与……一样荒唐"，"与其那样不如这样的好"等等。 One may as well not know a thing at all as know it imperfectly. 11."to make…of"的译法（使……成为……，把……当作） I will make a scientist of my son. 12. oo…+不定式"，not(never)too…+不定式"，"too…not+不定式 She is too angry to speak. 13. only(not, all, but, never) too …to do so "和"too ready (apt) + to do"结构中，不定式也没有否定意义，凡是"not","all""but等字后+"too…to，"不定式都失 去了否定意义，在"too ready(apt) +to do"结构中，不定式也没有否定意义。

You know but too yell to hold your tongue. 14. "no more …than…"句型 A home without love is no more a home than a body without a soul is a man. 15. "not so much…as"和"not so much as …"结构，"not so much…as"="not so much as …"，其中as有进可换用but rather，可译为："与其说是……毋须说是……"。而 "not so much as"="without(not)even，"可译为"甚至……还没有"。

The oceans do not so much divide the world as unite it . 16. "Nothing is more…than"和"Nothing is so …as"结构，"Nothing is more…than"和"Nothing is so …as"都具有最高级比较的意思，"Nothing I"可换 用"no","nobody","nowhere","little","few","hardly","scarcely"等等，可译为"没有……比……更为"，"像……再没有了"，"最……"等。 Nothing is more precious than time. 17. "cannot…too…"结构，"cannot…too…"意为"It is impossible to overdo…"或者，即"无论怎样……也不算过分"。

"not"可换用"hardly","scarcely"等，"too"可换用 "enough","sufficient"等 You cannot be too careful. 18. "否定+but "结构，在否定词后面的"but"，具有"which not","who not","that not"，等等否定意义，构成前后的双重否定。可译成"没有……不是"或"……都……"等 Nothing is so bad but it might have been worse. 19. "否定+until (till)"结构，在否定词"no","not","never","little","few","seldom"等的后边所接用的"until/till"，多数情况下译为"直到……才……"，"要…… 才……"，把否定译为肯定。

Nobody knows what he can do till he has tried. 20. "not so…but"和"not such a …but"结构，这两个结构和"否定+but"的结构差不多，不同之点是这两个结构中的"but"是含有"that…not"意味的连续词，表示程度。可译 为"还没有……到不能做……的程度"，"并不是……不……"，"无论怎样……也不是不能……"等。

He is not so sick but he can come to school. 21. "疑问词+should…but "结构，这个结构表示过去的意外的事，意为"none…but"，可译为"除了……还有谁会……"，"岂料"，"想不到……竟是……"等。 Who should write it but himself? 22. "who knows but (that)…"和"who could should…but"结构，这个结构是反问形式，一般意译为"多半"，"亦未可知"等等，有时也可直译。

Who knows but (that) he may go? 23. "祈使句+and"和"祈使句+or"结构，"祈使句+and"表示"If…you…"，"祈使名+or"表示"if…not…，you。 Add love to a house and you have a home. Aad righteousness to a city and you have a community. Aad truth to a pile of red brick 。

5. 英语的基本及常用句型

1、It seems that。

看起来好象。.. 2、would you like to do sth你想要做某事吗 3.there be。

某地有某物 4.want to do sth想要做某事 5.tell sb to do sth告诉某人做某事 6.enjoy doing sth喜欢做某事 7.hope to do sth希望做某事 8.what about doing sth做。怎么样 9.why not do sth=why don't you do sth为什么不做。

10.let's do sth让我们做某事吧 11、help sb (to) do sth 帮助某人做某事 太多了，实在不能一一列举。

6. 写英语作文时常用的连接词有哪些

常用连接词： 1.表文章结构顺序：First of all,Firstly/First,Secondly/Second… And then,Finally,In the end,At last 2.表并列补充关系：What is more,Besides,Moreover,Furthermore,In addition As well as,not only…but (also), including, 3.表转折对比关系：However,On the contrary,but,Although+clause（从句）， In spite of+n/doing,On the one hand…，On the other hand… Some…，while others…，as for, so…that… 4.表 因 果 关 系：Because,As,So,Thus,Therefore,As a result 5.表换一种方式表达：In other words,that is to say, 6.表进行举例说明：For example;For instance;such as+n/doing 7.表 陈 述 事 实：In fact,frankly speaking, 8.表达自己观点：As far as I know/concerned,In my opinion,personally, as to me 9.表总结：In short,In a word,In conclusion,In summary,all in all, briefly/ in brief ; generally speaking, as you know, as is known to all 良好的开端等于成功的一半.在写作文时，通常以最简单也最常用的方式---开门见山法.也就是说， 直截了当地提出你对这个问题的看法或要求，点出文章的中心思想. A. Just as every coin has two sides, cars have both advantages and disadvantages.（用于说明某物的正反两面） B. Compared to/ In comparison with letters, e-mails are more convenient.（用 于比较/对比 两事物） C.Opinions are divided on the advantages and disadvantages of living in the city and in the countryside. （人们关于生活在城市还是农村的优缺点的看法不同）（用于表达看法） D. As we all know, computers have played an important role/part in our daily life.（用于说明某物的重要性） E. Why do you go to university? Different people have different points of view.（反问语气，更有吸引力，增强说服力）（用法广泛） 文中正确使用两三个好的句型，如：定语从句、状语从句、动名词做主语等. 宾语从句举例：I believe Tianjin will be more beautiful and prosperous. 状语从句举例：If everyone does something for the environment,our hometown will become clean and beautiful. 动名词做主语举例：Reading books in the sun is bad for our eyes. =It's bad for our eyes to read books in the sun. 作文库大全 小升初 中考满分 高考满分 高考零分 定语从句举例：Although I have many different pens,the pen which my father sent me is my favorite one. 常用状语从句句型： 1）时间：when,not…until,as soon as 2）目的：so that+clause（从句）；to do（为了） 3）结果：so…that+clause,too…to do（太……以至于……） 4）条件：if,unless（除非），as long as（只要） 5）让步：though,although,even though,even if No matter what/when/where/who/which/how 6）比较：as…as…，not so…as…，than 其他句型： It is said that 据说 It is reported that 据报道 It is suggested that 据建议 It is estimated that 据估计 It is proved that 据证明 It is learned that 据了解 It is acknowledged that 据大家公认 众所周知： as is known to all， +句子 as we all know， +句子 it is generally/ publicly known / considered that… There is no doubt that 毫无疑问… There is no need to do 没必要做… There is no point in doing 做某事毫无意义 表示喜欢和感兴趣：like / love doing /enjoy doing be fond of doing 喜欢做… be keen on n. /doing热衷于做…… have delight in doing. 做……很高兴 prefer to do A rather than do B 宁愿做A也不愿做B be addicted to doing 沉迷于…… prefer doing sth. to doing sth. be interested in doing = show/ take great interest in n / doing fall in love with 深深喜欢做某事 try to do努力做… strive to do 努力做… try one's best to do = do one's best to do 竭尽全力做… make efforts to do = make every effort to do 尽力做… do what sb can (do ) to do 尽力做… spare no effort to do 不遗余力的做… do what / everything sb. can to do 尽某人全力做… intend / plan to do 打算做… be going to do 打算做… decide to do 决定做… determine to do 决定做… be determined to do 决定做… make up one's mind to do 下定决心做… want to do 想做… would like to do 想做… hope to do 希望做… expect to do 期待着做… wish to do 希望做… consider doing 考虑做… look forward to doing 盼望做… keep on doing 坚持做… dream of doing 梦想做… can't help doing 情不自禁地做… keep / stop / prevent sb. from doing 阻止某人做… be busy (in ) doing 或be busy with + 名词 忙于做… have trouble / have problem / have difficulty (in) doing 或 with + 名词 做…有困难 spend time / money (in )doing 或spend time / money on + 名词 花费时间做… have fun / have a good time / enjoy oneself doing 玩得开心 get used to/ be accustomed to doing 习惯做某事。

7. 提供一下英语四级作文常用单词或句子

CET4经典35句 一、~~~ the + ~ est + 名词 + （that） + 主词 + have ever + seen ( known/heard/had/read, etc) ~~~ the most + 形容词 + 名词 + （that） + 主词 + have ever + seen ( known/heard/had/read, etc) 例句：Helen is the most beautiful girl that I have ever seen.海伦是我所看过最美丽的女孩。

Mr. Chang is the kindest teacher that I have ever had.张老师是我曾经遇到最仁慈的教师。 二、Nothing is + ~~~ er than to + V Nothing is + more + 形容词 + than to + V 例句：Nothing is more important than to receive education.没有比接受教育更重要的事。

三、~~~ cannot emphasize the importance of ~~~ too much.（再怎么强调。的重要性也不为过。）

例句：We cannot emphasize the importance of protecting our eyes too much.我们再怎么强调保护眼睛的重要性也不为过。 四、There is no denying that + S + V 。

（不可否认的。） 例句：There is no denying that the qualities of our living have gone from bad to worse. 不可否认，我们的生活品质已经每况愈下。

五、It is universally acknowledged that + 句子~~ （全世界都知道。） 例句：It is universally acknowledged that trees are indispensable to us. 全世界都知道树木对我们是不可或缺的。

六、There is no doubt that + 句子~~ （毫无疑问的。） 例句：There is no doubt that our educational system leaves something to be desired. 毫无疑问的我们的教育制度令人不满意。

七、An advantage of ~~~ is that + 句子 （。的优点是。）

例句：An advantage of using the solar energy is that it won't create (produce) any pollution. 使用太阳能的优点是它不会制造任何污染。 八、The reason why + 句子 ~~~ is that + 句子 （。

的原因是。） 例句：The reason why we have to grow trees is that they can provide us with fresh air. 我们必须种树的原因是它们能供应我们新鲜的空气。

九、So + 形容词 + be + 主词 + that + 句子 （如此。以致于。）

例句：So precious is time that we can't afford to waste it. 时间是如此珍贵，我们经不起浪费它。 十、Adj + as + Subject（主词）+ be, S + V~~~ （虽然。）

例句：Rich as our country is, the qualities of our living are by no means satisfactory. 虽然我们的国家富有，我们的生活品质绝对令人不满意。 十一、The + ~er + S + V, ~~~ the + ~er + S + V ~~~ The + more + Adj + S + V, ~~~ the + more + Adj + S + V ~~~（愈。

愈。） 例句：The harder you work, the more progress you make. 你愈努力，你愈进步。

The more books we read, the more learned we become. 我们书读愈多，我们愈有学问。 十二、By +Ving, ~~ can ~~ （借着。

..能够..） 例句：By taking exercise, we can always stay healthy. 借着做运动，我们能够始终保持健康。 十三、~~~ enable + Object（受词）+ to + V （..使..能够..） 例句：Listening to music enable us to feel relaxed. 听音乐使我们能够感觉轻松。

十四、On no account can we + V ~~~ （我们绝对不能。） 例句：On no account can we ignore the value of knowledge. 我们绝对不能忽略知识的价值。

十五、It is time + S + 过去式 （该是。的时候了） 例句：It is time the authorities concerned took proper steps to solve the traffic problems.该是有关当局采取适当的措施来解决交通问题的时候了 十六、Those who ~~~ （。

的人。） 例句：Those who violate traffic regulations should be punished.违反交通规定的人应该受处罚。

十七、There is no one but ~~~ （没有人不。） 例句：There is no one but longs to go to college.没有人不渴望上大学。

十八、be + forced/compelled/obliged + to + V （不得不。） 例句：Since the examination is around the corner, I am compelled to give up doing sports. 既然考试迫在眉睫，我不得不放弃做运动。

十九、It is conceivable that + 句子 （可想而知的） It is obvious that + 句子 （明显的） It is apparent that + 句子 （显然的） 例句：It is conceivable that knowledge plays an important role in our life.可想而知，知识在我们的一生中扮演一个重要的角色。 二十、That is the reason why ~~~ （那就是。

的原因） 例句：Summer is sultry. That is the reason why I don't like it.夏天很燠热。那就是我不喜欢它的原因。

二十一、For the past + 时间，S + 现在完成式。（过去。

年来，。一直。）

例句：For the past two years, I have been busy preparing for the examination.过去两年来，我一直忙着准备考试。 二十二、Since + S + 过去式，S + 现在完成式。

例句：Since he went to senior high school, he has worked very hard.自从他上高中，他一直很用功。 二十三、It pays to + V ~~~ （。

是值得的。） 例句：It pays to help others. 帮助别人是值得的。

二十四、be based on （以。为基础） 例句：The progress of thee society is based on harmony.社会的进步是以和谐为基础的。

二十五、Spare no effort to + V （不遗余力的） 例句：We should spare no effort to beautify our environment.我们应该不遗余力的美化我们的环境。 二十六、。