英语四六级作文万能模板(英语四六级作文万能模板 ..\/news\/173.html)

2021年下半年大学英语四六级即将开考，而这是当代大学生最头疼的考试之一了。我们都知道，四六级一开始就是写作。面对即将到来的考试，临时背一些万能的英语 作文 句子模板也是很有效的。下面是我们精心整理出来的万能模板。 ↓↓↓点击获取“四六级”相关内容↓↓↓ ★英语四六级口语自我介绍★ ★英语四六级应急技巧与方法★ ★ 大学四六级没过影响大吗   ★ ★英语四六级多少分以下没有成绩★ 大学四六级作文万能句式 一.段首句 1)关于……人们有不同的观点。一些人认为…… There are different opinions among people as to 省略.Some people suggest that 省略. 2)俗话说……，它是我们前辈的经历，但是，即使今天，它在许多场合仍然使用。 There is an old saying省略.It is the experience of our forefathers,however,it is correct in many cases even today. 3)现在，……，它们给我们的日常生活带来了许多危害。首先，……;其次，……。更为糟糕的是……。 Today,省略,which have brought a lot of harms in our daily life.First,省略,Second,省略.What makes things worse is that 省略. 4)现在，……很普遍，许多人喜欢……，因为……，另外……。 Nowadays,it is common to 省略.Many people like 省略because省略.Besides,省略. 5)任何事物都是两面性，……也不例外。它既有有利的一面，也有不利的一面。 Everything has two sides and 省略is not an exception.It has both advantages and disadvantages. 6)关于……人们的观点各不相同，一些人认为……，在他们看来，…… People's opinions about 省略vary from person to person.Some people say that 省略.To them,省略. 7)人类正面临着一个严重的问题……，这个问题变的越来越严重。 Man is now facing a big problem省略which is becoming more and more serious. 8)……已成为人的关注的热门话题，特别是在年轻人当中，将引发激烈的辩论。 省略has become a hot topic among people,especially among the young and heated debates are right on their way. 9)……在我们的日常生活中起着越来越重要的作用，它给我们带来了许多好处，但同时也引发一些严重的问题。 省略has been playing an increasingly important role in our daily life.It has brought us a lot of benefits but has created some serious problems as well. 10)根据图表/数字/统计数字/表格中的百分比/图表/条图形/成形图可以看出……。很显然……，但是为什么呢? According to the figure/number/statistics/percentages/ in the chart/bar graph/line/graph, it can be seen that省略.Obviously,省略,but why? 二.中间段落句 1)相反，有一些人赞成……，他们相信……，而且，他们认为……。 On the contrary,there are some people in favor of 省略.At the same time ,they say省略. 2)但是，我认为这不是解决……的好方法，比如……。最糟糕的是……。 But I don't think it is a very good way to solve省略.For example,省略.Worst of all,省略. 3)……对我们国家的发展和建设是必不可少的，非常重要的。首先，……。而且……，最重要的是…… 省略is necessary and important to our country's development and construction.First,省略.What's more,省略.Most important of all,省略. 4)有几个可供我们采纳的方法。首先，我们可以……。 There are several measures for us to adopt.First,we can省略. 5)面临……，我们应该采取一系列行之有效地方法来……。一方面……，另一方面…… Confronted with省略,we should take a series of effective measures to省略.For one thing,省略For another,省略. 6)早该拿出行动了。比如说……，另外……。所有这些方法肯定会……。 It is high time that something was done about it.For example,省略.In addition.省略.All these measures will certainly省略. 7)然而，正如任何事物都有好坏两个方面一样，……也有它不利的一面，像……。 However,just like everyone has both its good and bad sides,省略also has its own disadvantages,such as省略. 8)尽管如此，我相信……更有利。 Nonetheless,I believe that省略is more advantageous. 9)完全同意……这种观点(陈述)，主要理由如下： I fully agree with the statement that省略because省略. 三.结尾句 1)至于我，在某种程度上我同意后面的观点，我认为…… As for as I am concerned,I agree with the latter opinion to some extent.I think that省略. 2)总而言之，整个社会应该密切关注……这个问题。只有这样，我们才能在将来……。 In a word,the whole society should pay close attention to the problem of省略.Only in this way can省略in the future. 3)就我个人而言，我相信……，因此，我坚信美好的未来正等着我们。因此…… Personally,I believe that省略.Consequently,I'm confident that a bright future is awaiting us because省略. 4)随着社会的发展，……。因此，迫切需要……。如果每个人都愿为社会贡献自己的一份力量，这个社会将要变得越来越好。 With the development of society,省略.So it's urgent and necessary to省略.If every member is willing to contribute himself to the society,it will be better and better. 5)至于我(对我而言，就我而言)，我认为……更合理。只有这样，我们才能…… For my part,I think it reasonable to省略.Only in this way can we省略. 6)在总体上很难说……是好还是坏，因为它在很大程度上取决于……的形式。然而，就我个人而言，我发现……。 It is difficult to say whether省略is good or not in general as it depends very much on the situation of省略-.However,from a personal point of view find省略. 以上就是一些英语四六级作文万能句式的内容，考生可以抽时间熟练掌握，希望对大家有用。 大学四六级作文万能句式相关文章： ★大学四六级作文万能句式 ★大学英语四六级及英语考试作文的万能套句 ★大学英语四六级写作中的常用句型有哪些 ★大学英语四级作文必备的五大万能模板 ★大学英语六级作文四大类型的万能模板 ★六级作文模板万能句型 ★六级作文模板高级句型 ★英语六级作文万能模板+高分句式,你值得拥有! ★英语六级作文万能句子及写作模板 ★四级作文模板万能句型大全 var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?fff14745aca9358ff875ff9aca1296b3"; var s = document.getElementsByTagName("script")[0];s.parentNode.insertBefore(hm, s); })();

六级英语作文模板万能句型如下：1、Many people insist that.很多人坚持认为。2、I cannot entirely agree with the idea that.我无法完全同意这一观点。3、From what has been discussed above, we mayreasonably arrive at the conclusion that.综上所述，我们可以清楚地得出结论。 4、it seems to me that something is not valued highly enough…. the possible reason may be … 在我看来，对某事的重视还不够，可能的原因或许是… 5、but possibly the problem lies not so much in (our institutions) as in (our attitudes). 但可能问题出在我们的态度上，而不是我们的机构上。 四级英语作文模板万能句型如下： 1、Many people insist that... 很多人（坚持）认为…… 2、A lot of people seem to think that... 很多人似乎认为…… 3、Taking all these factors into consideration, we naturally come to the conclusion that... 把所有这些因素加以考虑，我们自然会得出结论…… 4、It is high time that we put an end to the （trend）. 该是我们停止这一趋势的时候了。 5、It is time to take the advice of ... and to put special emphasis on the improvement of ... 该是采纳……的建议，并对……的进展给予非常重视的时候了。

英语四六级考试之前一定要掌握一些必须的作文模板及常用句型，可以帮助我们提高成绩。下面我将从开头、中间、结尾来跟大家分享英语四六级作文的万能句型！ 一、英语四六级万能句型 （1）开头万能句型 1.Depending on personal experience, personal type and emotion concern, we find that some people hold the idea of..., while others prefer... 基于个人经历、个性类型和情感关注的不同，我们发现有人持……的观点，而另外一些人则更喜欢…… 例句：Depending on personal experience, personal type and emotion concern, we find that some people hold the idea of living in the small town, while others prefer the big city. 基于个人经历、个性类型和情感关注的不同，我们发现有人喜欢生活在小城镇，而另外一些人则更喜欢大城市。 2.When asked about..., the vast/ overwhelming majority of/ most/ many/ quite a few people say/ think/ believe/ answer that... But... 当被问及……时，多数（大多数、许多）人认为（回答）……但是…… 例句：When asked about choosing living place, the vast people think that living in the big city is perfect. But I think living in the small town is the better choice. 当被问及在选择居住地方时，多数人认为居住在城市是很棒的。但是我觉得住在小城镇更好。 3.When it comes to ..., some think/ hold/ believe... 当提及……时，有人认为…… 例句：When it comes to sports, some believe basketball is the most popular one. 当提到运动时，有人认为篮球是最受欢迎的。 4.It has become apparent to us that... 对我们来说，……已经变得很明显了 例句：It has become apparent to us that living in a small town is more comfortable. 对我们来说，住在小城镇更加舒服。 5.Nowadays, it is commonly/ widely/ generally believed/ thought/ held that..., but I wonder/ doubt that... 如今，人们普遍认为……，但是我怀疑…… 例句：Nowadays, it is generally believed that living in a big city is convenient, but I doubt that living in a small country is more comfortable. 如今，人们普遍认为住在大城市更便利，但是我觉得住在小城镇更加舒服。 6.With the rapid growth of..., ...have/has become increasingly important in our daily life. 随着……的快速增长，……日常生活中已经变得越来越重要。 例句：With the rapid growth of hi-tech skills, cellphone has become increasingly important in our daily life. 随着高科技的快速增长，手机在日常生活中已经变得越来越重要。 7.Recently the issue/ problem of...has been brought into focus/ brought to public attention/ in the limelight/ posed among the public. 近来，……的问题已经成为人们关注的焦点。 例句：Recently the issue of studying abroad has been brought into focus. 近来，出过留学的问题已经成为人们关注的焦点。 8.One of the hottest topics many people talk about now is... 人们热烈讨论的话题之一就是…… 例句：One of the hottest topics many people talk about now is going abroad for study. 人们热烈讨论的话题之一就是出国留学。 （2）中间万能句型 1. Apart from this, other ways/ aspects/functions are... 除此之外，另外一些方法（方面、作业）是…… 例句：Besides, other ways are also under considered. 除此之外，其他方法也是在考虑中。 2.The last but not the least is... 最后但并非不重要的是…… 例句：The last but not the least is that we should get up early. 最后但并非不重要的是我们要早起。 3.On the one hand,...,on the other hand,... 一方面……，另一方面…… 例句：On the one hand, we need to be helpful, on the other hand, we should be on the alert to protect ourselves. 一方面我们要乐于助人，另一方面我们要提高警惕保护自己。 4.No less important/ harmful is... 同样重要（有害） 例句：No less important is saving water. 节约用水也是同样重要的。 5.But, you may ask, why is...important/ indispensable/ necessary? 但你也许会问，为什么……很重要（必不可少、有必要）？ 例句：But, you may ask, why is water important? 但你也许会问，为什么水很重要？ 6.Nothing/ Few things can approach/ equal/ match/ parallel... 没有什么能与……相比 例句：Nothing can approach my pet dog. 没有什么能与我的宠物狗相比。 7.Despite the fact that most of them like..., I would like to choose... 尽管大部分人喜欢……，我还是倾向于…… 例句：Despite the fact that most of them like swimming, I would like to choose running. 尽管大部分人喜欢游泳，我还是倾向于跑步。 8.People differ greatly on their attitudes towards this problem. Some maintain that... Others, on the contrary, hold the opinion that... Personally, I stand on the side of... 人们对于这个问题的态度差异很大。有人坚持认为……与此相反，有人认为……就我个人而言，我站在……这一边。 例句：People differ greatly on their attitudes towards this problem. Some maintain that living in the big city is better. Others, on the contrary, hold the opinion that living in the small country is better. Personally, I stand on the side of the latter. 人们对于这个问题的态度差异很大。有人坚持认为居住在大城市比较好。与此相反，有人认为小城镇比较好。就我个人而言，我站在后者这一边。 9.To understand the truth of..., it is necessary to analyze... 为了了解……的真相，有必要分析…… 例句：To understand the truth of air pollution, it is necessary to analyze automobile exhaust. 为了了解大气污染的真相，有必要对汽车尾气进行分析。 10.Different people have different opinions/ views/ ideas about... Some people take it for granted that... On the contrary, some other people think... 对于……的观点因人而异。有人想当然的认为……相反，有人则认为…… 例句：Different people have different opinion about choosing living place. Some people take it for granted that big city is better. On the contrary, some other people think small town is the perfect choice. 对于居住地的选择因人而异。有人想当然的认为大城市更好。相反，有人则认为小城镇是最好的选择。 （3）结尾万能句型 1.From above... 综上所述…… 例句：From above, I think living in a big city is better. 综上所述，我认为居住在大城市是更好的。 2.Therefore, it is not difficult to draw the conclusion that... 因此，不难得出以下结论…… 例句：Therefore, it is not difficult to draw the conclusion that living in a big city is better. 因此，不难得出居住在大城市更好的结论。 3.In a word, the whole society should pay close to the problem of... Only in this way can...in the future. 总之，全社会都应该密切关注……，只有这样将来才能…… 例句：In a word, the whole society should pay close attention to the problem of protecting the environment. Only in this way can we have a good place to live in the future. 总之，全社会都应该密切关注环境保护问题，只有这样将来我们才能有一个生存的好地方。 4.To be sure, there may be difficulties we cannot overcome, but if we... 确实，有些困难我们无法克服，但如果我们能够……的话，……。 例句：To be sure, there may be difficulties we cannot overcome, but if we work hard, we can figure out another way to solve the problem. 确实，有些困难我们无法克服，但如果我们能够努力的话，我们就可以找到解决问题的另一种方法。 5.Taking into account all of these factors, we may reach the conclusion that... 考虑到所有因素，我们得出结论，…… 例句：Taking into account all of these factors, we may reach the conclusion that study hard is good to us. 考虑到所有因素，我们得出结论好好学习对我们是有好处的。 6.In summary/ conclusion/ a word,... 总之…… 例句：In summary, we should study hard. 总之，我们要好好学习。 7.As mentioned above,... 综上所述…… 例句：As mentioned above, living in the small town is more comfortable. 综上所述，居住在小城镇更加的舒适。 8.Therefore, we have no reason to make a fuss about All in all,... 所以我们没有理由为……大惊小怪。总之，…… 例句：Therefore, we have no reason to make a fuss about artificial intelligence. All in all, artificial intelligence will be more and more common in the future. 所以我们没有理由为人工智能大惊小怪。总之，未来人工智能会越来越普遍。 二、背诵方法 制定计划：清楚一天背多少个新句子。复习：一定要复习之前背的，否则很容易前功尽弃。默写：有的句子会背了，但是里面的单词未必会写，所以要多默写一下。运用：要把背诵的例句真正用到作文当中，知道怎么用。 我认为英语四六级作文写作的方法可以参考一下高中学习英语的方法，有很多方法还是可取的，作文例句很重要，一定要坚持背诵，勤能补拙，每天早晚各一遍效果最好，祝你取得理想的成绩！

四六级万能句一、首段写作：1.Recently,the rise in the problem/phenomenon of ___ has aroused public/wide concern.最近，___问题/现象的出现已经引起了公众的/广泛的关注。2.Recently,the issue of ___ has been brought into focus/brought to public attention.近来，___问题已经成为人们关注的焦点。3.The problem of ___ has caused wide concern over recent years.近年来，___问题已经引起了广泛的关注。4.With the rapid growth of___，___have/has become increasingly important in our daily life.随着___的快速增长，___在我们的日常生活中已经变得越来越重要。5.With ___playing an increasingly important role in___，more and more___.随着___在___中的作用日益重要，越来越多的___。6.Whenever you see/find ___，you can't help being shocked/surprised at___.每当看到/发现___的时候，你会不禁为___感到震惊/惊讶。7.As the bar chart shows,the number of ___ has dramatically increased/decreased during the ___ years from ___to___.如柱状图所示，___的数量从___年到___年___年之间急剧增加/减少。8.From the graph,we know the statistics of___and___.It can be seen easily that___.从图表中我们看到了___和___的数据，可以很容易地看出___。9.From the bar chart,we can see clearly that between___and ___ the amount of ___ ranged from ___to___.从柱状图中我们可以清楚地看到，从___到___，___的数量在___到___之间变化。10.As the bar chart shows,great changes concerning ___ took place between___and___.柱状图表明，从___到___发生了很大的变化。11.As can be seen in the graph,___have/has seen great changes in ___ between ___and___.从图表可以看出，在___到___之间，___在___方面发生了巨大变化。12.As is described in the picture,___.如图中所描述的那样，___。13.As is vividly indicated in the above drawing/picture，___.正如上图生动地描绘的一样，___。14.The drawing,thought-provoking as it is,does mirror a social phenomenon that___.这幅发人深省的图画的确反映了这样一个社会现象：___。15.As is symbolically depicted in the drawing above,___.Simply designed as the drawing seems to be,it does reveal that___.正如上图象征性地描绘的一样，___。该图虽然看似很简单，但它确实反映了___。16.As is vividly illustrated in the cartoon,___.The central point of this cartoon is that___.正如漫画中生动展示的那样，___。该漫画的主旨是___。17.We are often shown these days that___.But is this really the case?最近我们经常看到___。但情况真的如此吗？18.In recent years,there is a general tendency to___.According to a study,___last year.Why___?近年来，有一个总体趋势：___。根据一项研究，去年___。为什么___?19.These days we are often told that___.But is that true?最近，我们经常听说___。然而，那是真的吗？20.These days we often hear about___.But is this really the case?二、中间段写作1.In the first place，___.In the second place,___.首先，___。其次，___。2.First,___.Second,___.首先，___。其次___。3.To begin with,___.Secondly,___.Last but not least,___.首先，___。其次，___。最后但同样重要的是，___。4.The first reason is that___.The second one is that___.The third one is that___.第一个原因是___。第二个原因是___。第三个原因是___。5.First of all,___.Secondly,___.Furthermore,___.首先，___。其次，___。另外，___。6.For one thing,___.For another,___。一方面，___ 。另一方面，___。7.Firstly,___.Secondly,___.Thirdly,___.首先，___。其次，___。再次，___。8.There may be a combination of factors which contribute to/are responsible for/can explain___.也许有多种因素造成/可以解释___。9.There are probablythree/several/many/a variety of reasons for this dramatic/significant increase/decline in___.引起___显著增长/下降的原因或许有三个/几个/许多个/很多。10.Some reasons can explain this trend.一些原因可以解释这一趋势。11.The causes of ___ are varied.They include ___.Perhaps the main cause is___.造成___的原因有很多，包括___。主要的原因可能是___。三、末段写作1.To sum up,___can benefit us tremendously if correctly used.总而言之，如果运用得当，___会让我们受益匪浅。2.Therefore，it is not difficult to draw the conclusion that___.因此，不难得出以下结论：___。3.Recognizing the fact that ___ will lead us to conclude that___.承认___这一事实，我们能得出以下结论：___。4.The evidence upon all sides supports/confirms/leads to a conclusion that各方面的证据支持/表明/得出这样一个结论：___。5.From what has been discussed above/Based on the points discussed above，we mayreasonably/safely/finally draw/arrive at the conclusion that___.综上所述，我们能得出如下结论：___。6.In summary/conclusion/a word，it is important that we should总之，我们应该___，这一点很重要。7.We should try our best to overcome/conquer the difficulties.我们应该竭尽全力克服图难。8.It might be time to hear the warnings of some economists.是时候听听一些经济学家的警告了。9.It is necessary that effective actions/steps/measures should be taken to end/correct thesituation/tendency/phenomenon.有必要采取有效的措施结束/纠正这种状况/趋势/现象。10.Yet our job is not to wait for these things to happen，but to devise a way to obviatethem，at the very least，to alleviate them because God helps those who help themselves.然而，我们要做的并不是坐等这些事情发生，而是要想办法避免它们，至少去缓解一下这些问题的严重性，因为自助者天助之。
1.To prevent this phenomenon/trend from worsening/running wide/To guide thematter/situation to the best advantage， it is necessary/important to……　　(可用于分析建议类、原因分析类等议论文) 2.In the face of......some people take the position that……/some people come tobelieve that……， to which I can't attach/add my consent.　　(可用于批驳分析类议论文) In the face of......people retain/take/show/assume different attitudes/positions/standpoints.　　(可用于各抒己见类议论文) In the face of……many people have come up with……　　(可用于对比分析类议论文和知识性说明文等) 3.But many people feel puzzled about/perplexed at/over whelmed with……(the changes/situation)， so this essay is intended to……(可用于批驳分析类议论文和知识性说明文) 4.Although lots of people follow the fashion/trend， I still set my heart on……　　(可用于理由陈述类议论文) 5.To get a sense of how….we must turn first to causes for it/to whatbenefit(harm/problems/difference)it has brought to our society.　　(可用于分析建议和原因分析类议论文) 6.This is a(n) favorable/unfavorable/unhealthy/essential/marked/gratefulchange/tendency/situation， but factors/causes/reasons for it are not hard tofind / but its appearance/existence derives from a variety of factors)　　(用于原因分析类议论文) 7.The progress/improvement/change(s)in….is(are)reallytremendous/remarkable/prodigious/marvelous， so it is necessary tounderstand(see)what it(they)illustrate(s)/prove(s)/account(s)for.　　(用于原因分析类议论文和知识性说明文) 8.A comparison between these changes may be a good way to learn more  about……　　(可用于对比说明文) 9.More insight/inspiration/truth/thought can be deduced from these changes.　　(可用于知识性说明文) 10.This situation/phenomenon/trend/tendency is rather distressing/disturbing/depressing/heart-rending， for the opposite of it is just in line with ourwishes/just what is to be expected.　　(可用于分析建议、批驳分析和原因分析等议论文) 11.This is what we are unwilling to see， so some way must be found out to……　　(可用于分析建议、对比分析、批驳分析类议论文和知识性说明文) 12.Fortunately， however， more and more people come/begin to realize that……　　(可用于分析建议、对比分析和各抒己见类议论文) 13.Unfortunately， things have worsened/come/developed to the point where……　　(用于分析建议、原因分析、批驳分析、各抒己见类议论文和知识性说明文) 14.But have you ever stopped to think what/how/why……?　　(可用于除理由陈述之外的各种议论文和知识性说明文)
（一）段首句 There are different opinions among people as to …Some people suggest that … 关于…人们有不同的观点是，一些人认为…There is an old saying …It is the experience of our forefathers,however,it is correct in many case even today. 俗话说…，它是我们前辈的经历，但是，即使在今天，它在许多场合仍然适用。 （二）提出自己观点万能模版 As for my own idea about the trip, I belive the sea will attract the children. 至于我自己对这次旅行的想法，我相信…As for as I am concerned,I agree with a later opinion to some extent. 就我而言，我在某种程度上同意后者的观点。There is some truth in both arguments,but I dream the advantages of …out weigh the disadvantages. 这两种观点都有一定的道理，但是我认为…的优点大于缺点。

在四六级考试中，好的作文无异于锦上添花，那么怎样才能写好作文呢，下面给大家分享几个不同题型的英语四级作文万能模板： 一、英语四级作文万能模板 解决方法型 1. 问题现状 2. 怎样解决(解决方案的优缺点) In recent days, we have to face I problem-----A, which is becoming more and more serious. First, ------------(说明A的现状).Second, ---------------(举例进一步说明现状) Confronted with A, we should take a series of effective measures to cope with the situation. For one thing, ---------------(解决方法一). For another -------------(解决方法二). Finally, --------------(解决方法三). Personally, I believe that -------------(我的解决方法). Consequently, I’m confident that a bright future is awaiting us because --------------(带来的好处). 对比选择型 When it comes to ____ ,different people hold different views . Some contend that____. For one thing,____ .For another,___ . In spite of all these claims, others maintain that ____，They point out that____ .Another instance often cited is that____ . It's no easy task to find a satisfactory answer to the issue. As for me, there's some truth to both arguments .It's advisable to ______. 说明利弊题型 说明利弊这种题型往往要求先说明一下现状，再对比事物本身的利弊，有时也会单从一个角度(利或弊)出发，最后往往要求考生表明自己的态度(或对事物前景提出预测) 1. 说明事物现状 2. 事物本身的优缺点(或一方面) 3. 你对现状(或前景)的看法 Nowadays many people prefer A because it has a significant role in our daily life. Generally, its advantages can be seen as follows. First ----------------(A的优点之一). Besides -------------------(A的优点之二). But every coin has two sides. The negative aspects are also apparent. One of the important disadvantages is that ----------------(A的第一个缺点).To make matters worse,------------------(A的第二个缺点). Through the above analysis, I believe that the positive aspects overweigh the negative ones. Therefore, I would like to ---------------(我的看法). (From the comparison between these positive and negative effects of A, we should take it reasonably and do it according to the circumstances we are in. Only by this way, ---------------(对前景的预测).) 阐述主题题型 1.阐述名言或主题所蕴涵的意义。 2.分析并举例使其更充实。 The good old proverb ----------------(名言或谚语)reminds us that ----------------(释义). Indeed, we can learn many things form it. First of all,-----------------(理由一). For example, -------------------(举例说明). Secondly,----------------(理由二). Another case is that ---------------(举例说明). Furthermore , ------------------(理由三). In my opinion, ----------------(我的观点). In short, whatever you do, please remember the say------A. If you understand it and apply it to your study or work, you”ll necessarily benefit a lot from it. From Joozone.com. 二、使用方法 1.看到一个作文题，先思考一下你会怎么写，从哪些角度，用什么句式。2.然后再在草稿纸上列个简单的提纲。3.再根据模板，按照自己的提纲，把模板往提纲里套。4.写完修改后，完善这篇作文，提取出适合你的思考逻辑的模板5.先记住中文译文的行文思路，再背诵英文模板。 平时一定要注重积累，写作文的时候套用上面的万能模板多练习，作文的逻辑和句式都是通用的，同时也要多背诵一些例句，不至于考试的时候想不起来！
Directions: For this part, you are allowed 30 minutes to write a short essay entitled On Excessive Packaging following the outline given below. You should write at least 120 words but no more than 180 words.
排放冷却是对流冷却的另一种。与再生冷却不同，用于排放冷却的冷却剂对推力室冷却吸热后不进入燃烧室参与燃烧，而是排放出去。直接排放冷却剂会降低推力室比冲，因此需要尽可能减少用于排放冷却的冷却剂流量，同时只在受热相对不严重的喷管出口段采用排放冷却。还有一种是辐射冷却，其热流由燃烧产物传给推力室，再由推力室室壁想周围空间辐射散热。辐射冷却的特点是简单、结构质量小。主要应用于大喷管的延伸段和采用耐高温材料的小推力发动机推力室。在组织推力室内冷却时，是通过在推力室内壁表面建立温度相对较低的液体或气体保护层，以减少传给推力室室壁的热流，降低壁面温度，实现冷却。内冷却主要分为头部组织的内冷却（屏蔽冷却）、膜冷却和发汗冷却三种方法。推力室采用内冷却措施后，由于需要降低保护层的温度，所以燃烧室壁面附近的混合比不同于中心区域的最佳混合比（多数情况下采用富燃料的近壁层），造成混合比沿燃烧室横截面分布不均匀，使燃烧效率有一定程度的降低。膜冷却与屏蔽冷却类似，是通过在内壁面附近建立均匀、稳定的冷却液膜或气膜保护层，对推力室内壁进行冷却，只是用于建立保护层的冷却剂不是喷注器喷入的，而是通过专门的冷却带供入。冷却带一般布置在燃烧室或喷管收敛段的一个横截面上。沿燃烧室长度方向上可以有若干条冷却带。为提高膜的稳定性，冷却剂常常经各冷却带上的缝隙或小孔流入采用发汗冷却时，推力室内壁或部分内壁由多孔材料制成，其孔径为数十微米。多孔材料通常用金属粉末烧结而成，或用金属网压制而成。此情况下，尽可能使材料中的微孔分布均匀，是单位面积上的孔数增多。液体冷却剂渗入内壁，建立起保护膜，使传给壁的热流密度下降。当用于发汗冷却的液体冷却剂流量高于某一临界值，在推力室内壁附近形成的是液膜。当冷却剂流量低于临界值流量时，内壁温度会高于当前压力下的冷却剂沸点，部分或全部冷却剂蒸发，形成气膜。除了以上热防护外，还有其他热防护方法如：烧蚀冷却、隔热冷却、热熔式冷却以及室壁的复合防护等。3 高焓气体发生器热防护方案综合上述方法结合实际情况，便得到高焓气体发生器的热防护方法。高焓气体发生器的燃烧室与液体火箭发动机的不同，省去前面的推力室部分，使得其结构更简单而有效。那么，所涉及到的热防护即为对燃烧室室壁的热防护部分。由于燃料进入燃烧室内迅速分解并放出大量