下面是一段说明性作文，写作思路及作文模板如下。
1.有很多人喜欢养宠物
2.养宠物的利与弊
3.你的建议
The Advantages and Disadvantages of Keeping Pets
写作指南：
这篇作文属于说明性作文，考生只需要将提纲中要求的内容组织起来便可。
第1段提出很多人喜欢养宠物这种现象。
第2段分析利弊，根据作文的标题可知此段是重点内容。养宠物的益处可以从很多方面说(比如消除孤独感、丰富日常生活、获得快乐等)，弊端可以从养宠物减少了人与人之间的交流机会、可能使人被传染疾病、可能导致空气异味等方面来说。
第3段总结全文，并针对上文提到的弊端，简要提出自己的建议。
范文
Nowadays many people like raising pets, such as dogs, cats, birds, etc. Actually, it is good to keep pets because pets can play with the young and accompany the old. Research also shows that livingwith a pet helps to soothe people’s pressure and distress and even decreases the possibility of getting heart diseases.
However, many are against living together with animals. They argue that pets are easily infected by diseases, which may pass on to humans. [6]What’s more, the unpleasant smell and waste caused by pets are a resource of environmental pollution.
In my opinion, keeping pets brings joy to our life. But to avoid potential risks and troubles, we have to make sure that our pets are properly vaccinated and their behaviors are under control.
英语四级作文模板:说明原因型
模块一
Currently, has been the order of the day. This does demonstrate the theory --- nothing is more valuable than
It is clear that (1). If you (2), as a result, your dreams will come true. On the contrary, if you (3).
Failure will be following with you. It turns out that all your plan falls through.
No one can deny another fact that (4).You don't have to look very far to find out the truth, in respect that we all know (5).It will exert a profound influence upon (6).With reference to my standpoint, I think (7).
注释:
1:第一个优点
2:支持做法
3:不支持做法
4:第二个优点
5:举例证明优点二
6:说明优点三的影响第三天我写的相应作文:
The importance of self-confidence
Currently, self-confidence has been the order of the day. This does demonstrate the theory --- nothing is more valuable than self-confidence.
It is clear that (self-confidence means trust in one's abilities). If you (are full of self-confidence, it will bring your creative power to play, arouse your enthusiasm for work, and help you overcome difficulties), as a result, your dreams will come true. On the contrary, if you (have no confidence in yourself, there is little possibility that you would ever achieve anything ). Failure will be following with you。It turns out that all your plan falls through. No one can deny another fact that (self-confidence gives you light when you are in dark and encouragement when you are dismayed).You don't have to look very far to find out the truth, in respect that we all know (the secret of MMe. Curie lies in perseverance and self-confidence, the latter in particular). It will exert a profound influence upon (the achievement of one's ambitions). With reference to my standpoint, I think (he that can have self-confidence can have what he will).
模块二
In recent years, has caused a heated debate on (1).
The factors for (2).First of all, (3).Then, there comes a case that (4). Moreover, (5). Especially when (6).Indeed, these unique points can be collected the remind people that (7).In this way, we should behave just like (8).
The impact of Television
In recent years, with the development of science and technology, 80 percent of all homes in China have satellite TV, offering as many as 50 channels. It has caused a heated debate on (the impact of television on children). Many parents are worried about the impact of so much television on children.
The factors for (parents' worry is that children are indulge in television and spend too much time on it.).First of all, (with so many programs to choose from, children are not getting as much exercise as they should ).Then, there comes a case that (some studies have show that excessive watching of television by millions of children has lowered their ability to achieve in school ).
Moreover, (the effect on children's minds are more serious than the effect on children's bodies). Especially when (the children are too small to judge what programs are suit to them).Indeed, these unique points can be connected to remind parents that (they should pay close attention to and responsibilities for supervising their children's TV viewing).In this way, children will not be influenced too deeply.
模块三
For most of us today, (1). From above, we can find that the reasons why (2)are as follows.
The primary reason, I think, is (3).Second,(4). The third reason, actually, is (5).The significance for (6)。
Therefore, (7).
注释:来源：恒星英语学习网
(1)人们针对态度和举措
(2)归纳现状
(3)第一个原因
(4)第二个原因
(5)第三个原因
(6)重申造成现状的最重要原因
Pollution
Most of us today (recognize that environmental pollution has been a greatly serious problem. lots of plants trees corps are destroyed by bad air. many fish die of poisonous water. thousands of people die from eating poisoned fish or breathing in gas. therefore, environmental pollution should be responsible for these diseases that are disabling, or bringing death not only to human beings, but also to wild life.)From above, we can find that the reasons why (environment are polluted more and more seriously)are as follows.
The primary reason, I think, is (the reason of harmful substances into environment. for example, to prevent insects, farmers make use of great amounts of insecticides, so as to have bumper harvests. however, they pollute air, water and land ).
Second,(the gas coming from the car engines and factories also make environment polluted badly ). the third reason actually is (the result of a growing population in the world. everyday, so much litter and waste are poured out from houses, also pollute the environment ). The significance for (controlling pollution) noted that it's high time that more effective measures should be taken. Therefore, (new laws should be passed to limit the amount of pollutants from factories. moreover, in the households, there is an obvious need to reduce litter and waste. let's make our good efforts, and the world will be a safer place to live for us).
模块四
These days we often hear that (1).It is common that (2). Why does such circumstance occur in spite of social protects? For one thing, (3).For another, (4). What is more, since (5),it is natural that (6 ).To solve the problem is not easy at all, but is worth trying. We should do something such as (7) to improve he present situation, and I do believe everything will be better in the future.
(1)提出论题
(2)说明现状
(3)理由一
(4)理由二
(5)理由三
(6)理由三引起的后果
(7)解决方法
Pollution of environment
These days we often hear that (our living conditions are getting more and more serious because of the destruction of our environment ).It is common that (many trees and animals are near extinction, and the all-important food chain has been destroyed.).
Why does such circumstance occur in spite of social protects? For one thing, (the population of the world is increasing so rapidly that the world has been so crowded. ).For another,(the overuse of natural resources has influenced the balance of natural ecology ). What is more, since (the industrial revolution ),it is natural that (a great number of factories have been springing up like mushrooms. The smoke and harmful chemicals released from factories also pollute the environment).
To solve the problem is not easy at all, but is worthing. We should do something such as (planting more trees, equipping cars with pollution-control devices and learning to recycling natural resources )to improve the present situation, and I do believe everything will be better in the future.