写作思路：开头开篇点题，告诉大家水是我们生活中的重要物质，用途很大很多；然后中间用分点的方式列举水的作用，建议在3-5点之间；结尾提倡大家节约用水。这样一篇小作文的结构就完整了。
双语范文参考如下：
Use of water
Water is an essential part of our life. Water is of great use to us humans.
First, water can regulate the climate.
Second, water is not only an important part of our human body, but also an indispensable material for us to maintain life.
Third, water can meet our daily needs, such as laundry, cooking, cleaning and so on.
In short, the use of water involves all aspects of us. We should save water.
水的用途
水是我们生活中必不可少的一部分，水对于我们人类来说有很大的用途。
第一，水对气候有调节作用。
第二，水是我们人体的重要组成部分，也是我们维持生命不可少的物质。
第三，水可以满足我们的日常生活需要，比如洗衣、做饭、清洁等。
总之，水的用途涉及我们的方方面面，我们要节约用水。
写作模板参考
Use of water
Water is an essential part of our life. Water is of great use to us humans.
First, water can ..........
Second, water is not only .......... but also .................
Third, water can..................
In short, the use of water involves all aspects of us. We should save water.
水的用途
水是我们生活中必不可少的一部分，水对于我们人类来说有很大的用途。
第一，水...............
第二，水是..............也是........................
第三，水可以...................
总之，水的用途涉及我们的方方面面，我们要节约用水。
我们的生活离不开水，水给人类、动物、植物带来了好处。
We can't live without water, which brings benefits to human beings, animals and plants.
水可以给人们解渴，还可以使我们的房间、教室、商场变得干净。大量喝水还有降温、降血脂、通便、减肥的作用。
Water can quench people's thirst and make our rooms, classrooms and shopping malls clean. Drinking a lot of water can also cool down, reduce blood fat, relieve constipation and lose weight.
动物的生长离不开水，有些在水里生活的动物更离不开水，比如有：小鱼、海豚、鲨鱼等，它们在水里找食物，自由自在地游玩。
The growth of animals can not be separated from water, and some animals living in the water can not be separated from water, such as: small fish, dolphins, sharks, etc. they look for food in the water and play freely.
有了水小草长得碧绿，树木长得高大，田里的庄稼才可以丰收。
With water and grass growing green, trees growing tall, the crops in the field can harvest.
水的作用还有很多，总之，有水才有我们的一切。
There are many functions of water. In a word, only with water can we have everything.
本回答被网友采纳Use of water
Water is the most valuable asset on the earth, because life cannot live without it. First of all, it is an essential part of our body, water is a means of transport, to transport blood to every part of the body. If a person loses 10 percent of his or her water, he or she will dry, and water can be used to generate energy.
In the early days of the industrial revolution, people boiled water to produce steam and steam to drive machines to work. Water was used to make power. Finally, water can be used to clean things.
We can use water to clean our bodies, our food and our homes. Water is in our lives There are many uses that we shouldn't waste.
中文翻译：
水是地球上最宝贵的资产，因为生物离不开它。首先，它是我们身体里必不可少的部分，水是运输工具，把血液输送到身体的每一个部位。如果人失去了百分之十的水，他或她就会干燥，水可以用来产生能量在工业革命早期人们把水煮沸产生蒸汽和蒸汽推动机器工作，水被用来制造动力最后，水可以用来清洁东西我们可以用水来清洁我们的身体，我们的食物和我们的家里得出结论，水在我们的生活中有很多用途我们不应该使用浪费它。
Water is very important to us. if you donthave water for three days, you will die. we canuse water for flowers, swimming, washing andmany different things. we use it to cook, makeelectricity, put out fires and so on. we use
millions of liters of water every day.
水对我们很重要。如果你没有水三天，你会死。我们可以用水来花，游泳，洗涤和许多不同的东西。我们用它做饭，发电，扑灭火灾等。我们每天使用数百万公升的水。
Of all the things we eat and drink, water isthe most important.
在所有我们吃的与喝的东西里，水是最重要的。
We can live without food for some days .butif we don't have water for three or four days, wemay die. However, some people still don't realizehow important water is in our daily life .They
keep throwing rubbish into rivers or lakes.
我们可以完全不依靠食物活好些天，但是离开水三到四天，我们就会死亡。然而，一些人还是没有意识到水在我们日常生活中的重要程度，他们仍然无止境的将垃圾丢进河流和湖泊。
As a result, many rivers and lakes becomeso dirty that the water is no longer safe for
people to drink. So I think it is to save ourselvesto save water.
结果呢，很多河流和湖水变的很脏，以至于目前的水资源已经不适合人类饮用。所以，我想我们应该为了我们的身体健康，为我们的生存去保护水资源。本回答被网友采纳
你身上六成是水 在地球上，哪里有水，哪里就有生命。一切生命活动都是起源于水的。人体内的水分，大约占到体重的65%。其中，脑髓含水75%，血液含水83%，肌肉含水76%，连坚硬的骨胳里也含水22%哩！没有水，食物中的养料不能被吸收，废物不能排出体外，药物不能到达起作用的部位。人体一旦缺水，后果是很严重的。缺水1%-2%，感到渴；缺水5%，口干舌燥，皮肤起皱，意识不清，甚至幻视；缺水15%，往往甚于饥饿。没有食物，人可以活较长时间（有人估计为两个月），如果连水也没有，顶多能活一周左右。
2.庄稼的命根子 用手抓一把植物，你会感到湿漉漉的，凉丝丝的，这是水的缘故。植物含有大量的水，约占体重的80%，蔬菜含水90%-95%，水生植物竟含水98%以上。水替植物输送养分；水使植物枝叶保持婀娜多姿的形态；水参加光合作用，制造有机物；水的蒸发，使植物保持稳定的温度不致被太阳灼伤。植物不仅满身是水，作物一生都在消耗水。1公斤玉米，是用368公斤水浇灌出来的；同样的，小麦是513公斤水，棉花是648公斤水，水稻竟高达1000公斤水。一籽下地，万粒归仓，农业的大丰收，水立下了不小的功劳哩！
1. 60% of you are water on the earth, where there is water, there is life. All life activities originate from water. Water in human body accounts for about 65% of body weight. Among them, brain marrow contains 75% water, blood contains 83% water, muscle contains 76% water, and even hard bones contain 22% water! Without water, nutrients in food can't be absorbed, wastes can't be excreted, and medicines can't reach the active parts. Once the human body is short of water, the consequences are very serious. 1%-2% water shortage, thirsty; 5% water shortage, dry mouth, wrinkled skin, unconsciousness and even hallucination; Water shortage of 15% is often worse than hunger. Without food, people can live for a long time (some people estimate it as two months). If there is no water, people can live for about a week at most.
2. The lifeblood of crops. Grab a handful of plants with your hands, and you will feel wet and cool. This is because of water. Plants contain a lot of water, accounting for about 80% of body weight, vegetables contain 90%-95% of water, and aquatic plants actually contain more than 98% of water. Water transports nutrients for plants; Water keeps the branches and leaves of plants in graceful shape; Participate in photosynthesis and make organic matter; The evaporation of water keeps the plants at a stable temperature and prevents them from being burned by the sun. Plants are not only covered with water。