1.使用非谓语动词形式
用非谓语动词可以使句子简洁。例如：
We were surrounded by a variety of buildings. We found ourselves deeply absorbed in the sight. After the visit, we left the park and we felt joyful.
→Surrounded by a variety of buildings, we found ourselves deeply absorbed in the sight. After the visit, we left the park feeling joyful.
2.使用with的复合结构
with的复合结构,也就是独立主格结构,常作伴随状语以增加被描绘内容的生动性，使文章读起来更简洁明了。例如：
I could not go on studying because there was so much noise troubling me.
→I could not go on studying with so much noise troubling me.
3.使用复合句
复合句可以把结构松散的句子连接起来，从而使表达显得高级。例如：
①Occasions are quite rare when I have the time to spend a day with my kids.
②It is our belief that improvements in environment will contribute to the development of our society.
③Additionally, as the data shows, there are roughly 350 million smokers in China, 75% of which are males while 25% are females. What amazes us is that around 540 million people are affected by second hand smoke.
4.使用倒装句，强调句，虚拟语气等
使用这些句式可使文章化平淡为生动，加强语气，使评卷老师感受到作者的强烈情感。
He did not know what had happened until he had read the news in the newspaper.
→It was not until he had read the news in the newspaper that he knew what had happened.(强调句)
→Not until he had read the news in the newspaper did he know what had happened.(倒装句)
综合使用以上句式，长短句结合，可以增强句子的连贯性和表现力。