段首句作文实际上就是主题句作文或提纲式作文。段首句作文的特点是：供写作参考的信息为三段的首句(主题句、提纲)。写作前，考生应认真考虑所写内容是否符合段首句的要求，即每一个段首句后面要写的内容与段首句一致。一定要弄清楚文章题目和段首句之间的关系以及各段首句之间的联系。写作时，仅对段首句进行解释或举例说明，避免书写与其无关的内容，切记千万不要偏离所规定的文章主题和段落主题。

　　同时，考生应该注意段落的统一性(段落中所有的句子都须围绕中心思想进行发挥)和连贯性(句子都应按一定的逻辑顺序排列)。例如：

　　Directions：For this part， you are supposed to write a composition in English in 100-120 words based on the title：The Bicycle in Chia.Base your composition on the outline given below.Remember to write it clearly.

　　(1)在中国，自行车是最为流行的交通工具。

　　(2)骑自行车有许多好处。

　　(3)自行车的未来。

　　【参考范文】

　　The Bicycle in China

　　The bicycle is the most popular means of transportation in China.People ride them for various purposes such as going to and from school and work.Bicycles are very cheap and easy to buy in China.

　　There are many advantages to riding a bicycle.First， using a bicycle can greatly help reduce the air pollution in many big cities.Second， people can improve their health by riding a bicycle.Third， lots of people go out by bicycle to avoid traffic jam， meanwhile， bicycles are clean and cheap， convenient and easy to park.

　　The future of bicycles will be bright.In some advanced countries， city governments have arranged some people to use“public bicycles”to travel round the city center free of charge.Following the high speed of development of China's economy， I think the number of bicycles may reduce.But we must admit that bicycles will still remain its important position in Chinese people's daily life because of its own advantages as well as China's special national condition.