托福 tpo26 综合写作

第一篇：托福 tpo26 综合写作

In terms whether the zebra mussel will exert negative influence on North American, the passage and lecture are contradictory to each other.The author believes that zebra mussel might do harm the local species as they arrived while the lecturer holds a different opinion.First of all, the author makes a point that the history events suggest the zebra mussel's invasion is unstoppable.In the past, human transportation makes it possible for zebra mussel spread around the whole Europe and it is likely to happen again in North American.However, the lecturer demonstrates a different idea that a change made in the “ballast water” will prevent the invasion of zebra mussel from continuing.He says that if we refill the “ballast water” with ocean water, the mussel will no longer survive because the saline water might probably kill them all.Second, contrary to the belief in the passage that zebra mussel is able to conquer the new habitat due to their high reproduction rates and adaptation ability, as well as lacking predator, the lecturer says that the hypothesis made by author is not true.He mentions that there are many local bird will eat the zebra mussel as a major prey.As a result, the zebra mussel is unlikely to dominate the new habitat.Finally, regarding whether the zebra mussel will cause the decline in the fish population since they may compete for food such as plankton with fish species.The author thinks it is a possible consequence brought by zebra mussel.However, the lecturer refutes it that the mussel can't reduce the fish population because they provide enough nutrient for bottom living fish.

第二篇：tpo综合写作26

综合写作26

Reading

The zebra mussel, a freshwater shellfish native to Eastern Europe, has long been spreading out from its original habitats and has now reached parts of North America.There are reasons to believe that this invasion cannot be stopped and that it poses a serious threat to freshwater fish populations in all of North America.First, the history of the zebra mussels’ spread suggests that the invasion might be unstoppable.It is a prime example of an invasion made possible by human transportation.From the zebra mussel’s original habitats in Eastern Europe, ships helped spread it out along new canals built to connect Europe’s waterways.The mussel can attach itself to a ship’s bottom or can survive in the water—called “ballast water“—that the ship needs to take on to properly balance its cargo.By the early nineteenth century, the mussel had spread to the whole of Europe.It was later carried to the east coast of North America in the ballast water of ships traveling from Europe.The way ships have spread the zebra mussel in the past strongly suggests that the species will soon colonize all of North America.Moreover, once zebra mussels are carried to a new habitat, they can dominate it.They are a hardy species that does well under a variety of conditions, and they have a high rate of reproduction.Most important, however, zebra mussels often have no predators in their new habitats, and species without natural predators are likely to dominate their habitats.Finally, zebra mussels are likely to cause a decline in the overall fish population in habitats where they become dominant.The mussels are plankton eaters, which mean that they compete for food with many freshwater fish species.Summarize the points made in the lecture, being sure to explain how they support/contradict specific points made in the reading passage.Listening

Narrator

Now listen to part of a lecture on the topic you just read about.Professor

Contrary to what you just read, there are ways to control the zebra mussels’ spread.What's more, it is not so clear that the mussel is a serious threat to fish populations.True, the spread of zebra mussels couldn't be controlled in the past, but that's because people didn't have enough knowledge.In fact, there are effective ways to stop ships from carrying the mussels to new locations.Here's an

example.The way zebra mussels usually travel across the ocean is that a ship takes on some fresh ”ballast water" in Europe and then empties that water into American waterways when it arrives.Full of zebra mussels, but the ship can be required to empty out the freshwater and refill with ocean water while still out in the ocean.Saltwater will kill the mussels.Second, it's true that zebra mussels often don't have predators in their new habitats, but that's only in the beginning.What's been happening in Europe is that local aquatic birds sooner or later notice there's a new food source around and change their habits to exploit it.They switch from whatever they were eating before to eating zebra mussels.And birds can eat a lot of mussels.So zebra mussels aren't so likely to dominate their new habitats after all.Finally, even in habitats where zebra mussels become dominant, is the overall fish population likely to decrease.It's true that zebra mussels may have a negative impact on fish that eat plankton.But on other fish, they can have a positive impact.For example, the mussels generate nutrients that are eaten by fish that feed near the bottom of the lake or river.So bottom-feeding fish populations may increase, even if plankton-eating fish population decrease.一、阅读听力要点概括

Reading Passage

Main points: The invasion of zebra mussel to North America is unstoppable and puts a threat to freshwater fish.Sub point 1: History suggests invasion might be unstoppable.Sub point 2: Mussels can dominate their new habitat.Sub point 3: Mussel threats fish population after they dominate the area.Lecture

Attitude: Contrary.Unsure mussels’ threat to fish population.Sub Point 1: There are effective ways to stop mussels in today’s knowledge.(Salt water)

Sub Point 2: Birds can be predators and eat mussels.Sub Point 3: Bottom-feeding fish may increase while plankton-eating fish decrease but overall fish population only likely to decrease.Answers

二、范文逐段赏析

Paragraph 1

Contrary to what is argued in the passage, the lecture demonstrates how zebra mussels are not likely to become an imperative threat to freshwater fish populations in North America.此段功能：

(Listening passage后文提到用L代替)

(Reading passage后文用R代替)

以L的观点为主要观点，mussels不会对淡水鱼群造成危害。首段一句话即确定全文逻辑为相反，contrary。

此段结构：

作者用一句话总结了全文讨论的问题，并告诉大家全文逻辑为相反。极其单刀直入。大家发现论点很简明时大可不必费心凑两句话再起下一段。

Paragraph 2

First of all, recently uncovered knowledge of zebra mussel has shed light on new ways to prevent their invasion.Even though people in the past have not been able to stop the spread of zebra mussels, knowledge and technology may help abate their spread in the future.For example, although a large amount of zebra mussels spread to America by staying in the ballast water that is emptied halfway on the journey across the Atlantic and replenished with sea water, the zebra mussels can be exterminated as soon as they are directly exposed to salt water.此段功能：

以L的观点起头，谈sub topic 1，说明现代科技相比旧时代科技有机会阻止mussels spreading.随后举听力中的具体例子为证明。

此段结构：

此段为总分结构。第一句陈述L的观点(可以阻止spreading)，第二句陈述R中的事实(过去的人确实未能阻止mussel spreading)，第三句呈现L中的事实(咸水可以消灭mussels)反驳R中的事实。

Paragraph 3

Furthermore, zebra mussels do not often dominate a new habitat for a long period of time.The lecture agrees that although zebra mussels may have no predators and reproduce rapidly in the beginning, it would not be long before predators take notice of this new source of food, and develop a taste for it, thus preventing its domination.此段功能：

还是以L观点出发，谈sub topic 2, 说明mussels不会经常统治它的栖息地。L中同意短时期内mussels没有天敌，但没过多久掠食者就会发现这些新的美味从而结束mussels的统治。

此段结构：

总分结构。第一句总结L观点说明mussels完全统治是不成立的。第二句陈列L中同意R的证据。第三句陈列L反驳R的补充理由证据。

Paragraph 4

Finally, zebra mussels alone would not cause the decline of overall fish populations.Although zebra mussels may perhaps cause the decline of plankton eaters, as the passage suggests, they would also provide nutrients for bottom-feeding fish and ultimately cause the population of those fish to increase.此段功能：

讨论sub topic 3, 说明mussels不会造成总体鱼群数量的下降。L说虽然他同意R的观点(mussels造成plankton eaters下降)，但是伴随而来的bottom-feeding fish的数量上升从而导致总体鱼群数量上身。

此段结构：

总分结构。第一句总结L观点。第二句依然是陈列L同意R部分的证据。随后第三句陈列L中补充的证据来反驳R的观点。

三、范文全篇总评

1、逻辑结构

全文遵从总分结构，开头段直接一句话总结+逻辑，展开全文反驳基调。随后三段依照3个分论点依次展开。在分论点的论证中，作者阐明了L的态度，先小幅度同意R的观点，随即立刻补充新证据，反驳R的观点。作者利用R的证据，补充新证据后证明了R原来观点的片面性，从而达到一一驳倒的效果。

2、语言表达

全文十分紧凑，并启用了一些新词语赋予色彩。

其中值得借鉴的词语和句式有：

1.Recently uncovered knowledge of zebra mussel has shed light on new ways to prevent their invasion

Recently uncovered:最近新发现的

/Newly discovered/ It is recently found out/

Shed light on: 给与了希望

/Shown/ Given/ Illuminated

2.The lecture agrees although………….(R的观点)………..，….…(L的观点会抵消R的观点)….。

3.Ultimately：最终的，终极的

/Finally/ At last/ In the end/ After all/

Ultimately, the success of his company depends on good marketing.

第三篇：托福TPO17综合写作

托福TPO17综合写作范文：鸟类数量减少的原因

在新托福综合写作中，有的同学语言使用的能力还有一定局限，还要刻意追求句式的复杂化，但这样的后果就是写出来的句子个个都有错，个个都有表达不清。其实用最好的词表达最多的内容才是最厉害的写作方式，本文为大家整理了一篇新托福综合写作范文，来源于TPO 17。阅读材料：

In the past century, the steady growth of the human population and the corresponding increasing in agriculture and pesticide use have caused much harm to wildlife in the United States – birds in particular.Unfortunately for birds, these trends are likely to continue, with the result that the number of birds in the United States will necessarily decline.在过去的一个世界，人类数量的增加以及随之而来的农业生产的发展和杀虫剂的增加使得很多美国的野生动物受到了影响，而这种问题在鸟类上表现得更为明显。更加不幸的是，由于人口数量、农业生产和杀虫剂使用的趋势不会改变，美国的鸟类数量将会必然地随之下降。First, as human populations and settlements continue to expand, birds’ natural habitats will continue to disappear.Forests, wetlands, and grasslands will give way to ever more homes, malls, and offices.As the traditional areas suitable for birds keep decreasing, so will the size of the birds’ populations that depend on those vanishing habitats.首先，随着人口数量和居住面积的不断扩张，鸟类天然的栖息地持续地减少。森林、湿地和草原都变成的住宅、商场和写字楼。随着那些传统的适宜鸟类栖息的地方持续减少，失去赖以生存栖息地的鸟类，数量自然是减少的。

Second, agricultural activities must increase to keep pace with the growing human population.The growth of agriculture will also result in the further destruction of bird habitats as more and more wilderness areas are converted to agricultural use.As a result, bird populations in rural areas will continue to decline.第二，为了能够满足增长的人口数量，农业活动也必须随之增加。农业的增加的代价是进一步破坏鸟类的栖息地，越来越多的荒地变成了农业用地。因而，鸟类在乡村的数量也随之持续减少。Third, as human settlements expand and agriculture increases, the use of chemical pesticides will also increase.Pesticides are poisons designed to kill agricultural and home garden pests, such as insects, but inevitable, pesticides get into the water and into the food chain for birds where they can harm birds.Birds that eat the poisoned insects or drink contaminated water can die as a result, and even if pesticides do not kill birds outright, they can prevent them from reproducing successfully.So, pesticides have significantly contributed to declines in bird population, and because there will continue to be a need to control agricultural pests in the future, this decline will continue.第三，随着人类居住地的扩展和农业的发展，化学农药的使用也增加了。农药是用来杀死诸如昆虫之类的生长在农田或者菜园的害虫的有毒物质。不可避免的是，这些农药会进入水系和食物链，进而伤害鸟类。鸟类会吃被毒死的昆虫或者喝污染了的水。这样会导致鸟类的死亡，即便不会不会导致鸟类的立刻死亡，也会影响鸟类的繁殖。所以，杀虫剂会对鸟类的数量有非常严重的影响。同时，因为即便是在将来，还是需要杀虫剂来控制农业害虫，所以，鸟类数量减少的趋势难以改变。阅读部分需要提取的观点是：

-Main point: 三个原因导致鸟类数量减少Sub point 2: 农业用地的增加Sub point 2: 因为新品种作物的种植，农业用地会越来越少

-Sub point 3: 新型杀虫剂的毒性变小，并且正在研制新型抗虫害作物，将来杀虫剂不会继续伤害鸟类

新托福综合写作对语言的要求是清晰表达，准确转述即可(其实独立写作的要求也类似)。没有必要一味地追求语言的华丽，把话说清楚最重要。

第四篇：【TPO小站精选】托福作文结构优化

【TPO小站内部资料】托福作文结构优化

托福作文结构强调总分总。全文的总分总结构一般没有异议都可以做到。但

要强调的是中间说理段落里面也应该是明确的总分总结构：首先把这段的分论点（本段中心句）放在段首，然后2~4句说理解释，阐述为什么会有这一观点，我们身边的现状是如何需要这一点，接着例子和细节支持（4~6句话），最后总结句，即这段开头的分论点句的变换句式表达，把这段的观点再重申一遍。全文的结尾段也是一样，前几段的中心句整合重提，而且可以加几句话的升华，针对这个问题提出一个全局性的建议。

然后要强调为什么要把分论点句放在段首。容都要十分清晰，观点出现在显眼的地方，易懂，点。这里也涉及到西方人惯常的思维方法和语言模式，孩会绕来绕去，么也没干，书也看不进去，饭也吃不下。”，然后绕了一圈之后才说到“分手”这个词上。“I hate you”, OK, topic sentence, 然后说为什么hate youTopic sentence + supporting reasons and examples + conclusion所以即是强调内容简单化，好理解Conclusion也同样重要，不是只有first，secondin the first place，to begin with，again，also，等的替换表达。有些学生觉得文章结构化很死板，散文式的结构其实对语言和逻辑的要求更强，对于非英语母语学习者，尤其是短期

第五篇：托福写作

Agree or disagree A university should focus more on its facilities, computers or laboratory, rather than on hiring famous teachers

Nowadays, highly education has been attached more important than before.A argue that school facilities should pay more attention than professor lecture.From my perspective, although such hardware like computer centers and science lab provide some benefits to university students, university depends on quality of stuff.Admittedly, a school equipped with great facilities is more appealing the applicants.The reason is that it can make study easier.A bright library offers such a quiet condition for knowledge absorption;a computer center provides a self-govern ways to study;a science lab make student get more practice about miracles.However, this factors become less considerate when it comes to the quality of the professors.For one thing, not only do famous teachers can impart the knowledge, but instill the angle that to solve the problem.To pass on knowledge, a human is no better than a machine or a high-tech tool.The difference lies in the

special ways to get the solutions and the potential inspiration by the former.Take my favorite teacher for example, she often shows us some different way to solve the difficulties.And then she tells us the angle to work out the problem.As for me, it was not until her explanation, that I know about the easier way to work the problem.That is something that high-tech can barely achieve.For another, universities with qualified teachers tend to have higher graduate employment.It is not hard to imagine that a teacher with connections can bring more opportunity to get internship.As an old saying goes, knowledge starts with practice.It is still true now.Students who swamped in labs, would never face the brutal fact that you need a window for people to see what you’ve got.In this way, a well-connect professor can open that for you, instead of lifeless labs.In conclusion, though facilities could promote learning, but it fail to generate more practical merits to students.Recruit more qualified teacher should be paid more attention and stress.