三、典型段落操练
要求：请撰写下列作文，注意其中说明原因段或说明方法段的写法。
练习一
Directions : For this part , you are allowed 30 minutes to write a composition on the topic Pets' Services . You should write at least 120 words and base your composition on the outline given below :
1.如今宠物服务十分流行。
2.分析宠物服务流行的原因。
3.谈谈你的看法。
练习二
Directions : For this part , you are allowed 30 minutes to write a composition on the topic How to Deal with Sub-health . You should write at least 120 words and base your composition on the outline given below :
1.现代社会很多人都处于“亚健康”状态。
2.分析造成“亚健康”的原因。
3.应该如何解决“亚健康”问题？
参考范文
练习一
Pets' Services
第一段：概述现象段
Nowadays , more and more pets' services emerge in the markets , which have aroused great concern . Many people send their pets to the related shops to accept the pets' service and the pets do become more beautiful and healthier than ever before . In addition , pets' services are diversified , such as pets' barbershops and pets' canteens . The reasons for this phenomenon are varied .
第二段：说明原因段
Among all these reasons , the owner's love for pets plays a critical role . Regarding pets as friends and family members , people would like to spend some money on their pets . Moreover , with the improvement of people's living standartls , the pets' service , a new and profitable business attracts a lot of people's attention . Besides , large investment in pets' services makes the popularity of these services possible .
第二段：总结观点段
In my opinion , pets' services do good to both the society and the individual . For one thing , it can offer more job opportunities and stimulate the development of economy . For another , it makes the pets more pleasing to both the eye and the mind , thus people becoming happier when stay with their beautiful pets . Therefore , the development of pets' services should be encouraged .
练习二
How to Deal with Sub-health
第一段：概述问题段
Nowadays , quite a few people are suffering fron sub-health . Indeed ,sub-health can result in both physical and mental diseases . Even worse , people who suffer from sub-health are more easily to die prematurely .
第二段：说明原因段
There are many factors resulting in sub-health . Among these , the pace of modern life plays a vital role . The fast pace of modern life exerts great pressure on people and pressure is the ultimate cause of sub-health . What's more , modern people spend too much night time working or entertaining , which seriously affects their health .
第三段：说明方法段
Considering the great harm brought by sub-health , I think it is high time that we took effective measures to prevent sub-health . Firstly , people must have enough sleep to ensure that they can regain energy and physical strength . Secondly , people should have a rational diet under the instruction of doctor in order to avoid the diseases caused by malnutrition or super nutrition . Thirdly , people should regularly do some exercise to keep healthy . To conclude , it is an urgent thing to take flexible measures to avoid the threat of sub-health .