写作是综合考查考生英语能力的有效手段。大学英语四六级考试大纲要求，考生根据规定的题目和所提供的提纲、情景、图片或者图表等，在30分钟内写出一篇（四级）120-180词、（六级）150-200词的短文。英语写作是展现个人思维层面的技能，也是衡量大学生英语综合水平和应用能力的一个重要指标。写作内容需要通过语言来表达，如何在30分钟内写出具有较高语言质量的作文很重要。以下将介绍如何在短暂的时间内写出具有句法复杂度的句子。
1. 写并列句或者并列成分。例如：
[1] Many studies claim that computers distract people, make them lazy thinkers and even lower their work efficiency.
[2] We get connected with each other via internet, shop online with mobile phone and enjoy self-service on machines in banks and restaurants.
[3] They are addicted to the virtual world and even forget to eat, work and communicate with family members or friends.
并列句或者并列成分可以很容易增加所写句子的长度，如以上例句中使用动词短语或者非谓语动词短语并列，增加句子长度同时，丰富了语义表达。
2. 对名词进行修饰（加定语）
[1] I would like to recommend a place which is quite popular with visitors from China and other nations.
[2] The Chinese corner located in our school library is a good choice.
[3] I want to offer help to a drop-out girl coming from poverty-striking area in southwest China.
[4] The translation given by many translation apps is full of grammatical errors, which is bound to seriously, mislead people’s learning and communication.
[5] The top challenge is the culture shock, which means you cannot adapt to the exotic life during the first few days or even months.
以上例句中使用前置定语或者后置定语增加了句子的长度和复杂度，使句子表意更清楚，更加具有表现力，例句【4】【5】中使用which 将前句和后句进行连接，在句间建立因果逻辑关系，表意更具逻辑性和深度。
3. 对名词进行修饰（加同位语）
[1] Bob, a foreign exchange student, really expects to settle down in Xi’an and seek for a decent job concerning software design.
[2] Hard-working, a Chinese conventional virtue, plays a crucial role in the general routine of everyday living.
[3] Beijing, as the capital of several dynasties, has a profound cultural background, so you can better experience the extensive and profound traditional Chinese culture in Beijing.
[4] Reading books such as Gone with the wind, little prince and A nightingale and a rose can broaden horizon of youngsters.
[5] Social networking applications such as QQ and WeChat emerge one after another and they have become an indispensable part of our lives apparently.
同位语对其前的名词进行进一步解释和举例说明，增加句子长度的同时，使句子形式上错落有致，表意更丰富，更具画面感。
4. 对动词或者句子进行修饰（加状语）
英语中状语类型有：地点状语、时间状语、原因状语、结果状语、目的状语、条件状语、让步状语、方式状语、比较状语等。
以Keeping pets can cultivate the love heart of children. 为例，请观察下列状语从句：
[1] Keeping pets can cultivate the love heart of children although they sometimes bring much trouble to their owners.
[2] Keeping pets can cultivate the love heart of children because taking care of those little animals needs patience and care.
[3] Keeping pets can cultivate the love heart of children when there is only a child in one family.
[4] Keeping pets can cultivate the love heart of children by taking a shower for the animals or talking with these little animals.
以上句子中在主句基础上加上状语增加了句子的长度，丰富了句意表达。
5. 如果主句和其他句子之间构成因果关系，则可加非谓语动词。
写成“主句 + V-ing短语作结果状语”的形式，如以下例句。
[1] Indulging in using computers will deprive us of time with people we care about, leading to a lack of real-time interpersonal communication.
[2] Many video games are full of violence to boost players’ excitement, thus enhancing their appeal.
[3] Most joint ventures have some technologies and managerial ideas from other countries, which are relatively different from that in China, bringing feelings of freshness to a graduate like me.
[4] New applications on transportation emerge abundantly, contributing to the fact that people’s lifestyle has been changed as well.
写作中非谓语动词短语的使用可以增加句子的层次感和句法复杂度。
