不过第一篇：1.目前有许多人染上网瘾 2.分析网瘾产生的原因 3.呼吁人们不要沉溺与网路 Getting rid of Internet Addiction Nowadays, a lot of people, especially the adolescents, become obsessed with internet. This phenomenon has aroused great concern among general public. (阐明现象) The reasons for internet addiction lie in several aspects. First and foremost,(首先) internet has exerted a peculiar fascination on people. In addition,（再者） people nowadays face fierce competition and suffer from great pressures. Some of them turn to the virtual world to evade the problems and seek a sense of achievement. Last but not least,(最后) to various degrees, some people lack adequate self control. Once surfing the internet, they may become fascinated and think it is a good way to make the dull life colorful. It’s a common known fact that（众所周知的事实是…[总结]Internet addiction can have a devastating effect on peoples’ health and social lives. So we should use internet with wisdom. Keep it at a safe distance and never let it control our life.[呼吁] 第二篇：1.社会实践已成为大学生活的重要组成部分 2.分析社会实践带来的好处和弊端 3.你的观点 Social practice Social practice has become an important component of higher education. [阐明一种现象]More and more students participate in 参加social practice activities by going to grassroots organizations and spending time with the people. Undoubtedly,（无疑地）[承上启下，说明这一现象的“重要性”，利端] social practice can bring a lot of benefits. For one thing, it offers students an opportunity to apply what they have learned in school to practice. For another, through social practice students can gain a comprehensive understanding of the society. However[转接词，“然而”], as every coin has two sides, (事物都有两面性)social practice also brings some disadvantages.(弊端)[阐述这一现象的弊端] On the one hand（一方面）, some students spend too much time in it so as to ignore their study. On the another hand,（另一方面） when contacting the society some students are prone to be influenced by its dark side, Therefore,（“因此”）[表明自己的观点]we could see it clearly that the key lies in us students. So long as we could have correct attitude toward social practice, it can be most helpful to us in many respects. 第三篇： What electives to choose With the remarkable educational reform and the increasing students’ demand, universities strive to offer a variety of elective 选修课courses for students to choose from.（with引导的伴随状语从句，开门见山，表明现象） Some higher institutes provide he optional 二选一course of cross-cultural communication, and some colleges have computer science on the curriculum of effective courses. There are numerous（许多，无数的。“高级词汇”） reasons for students’ selection of the courses.[说明学生选课的原因] In the first place,（首先） students tend to take personal interest into consideration when they opt for an elective course. Possibly, that’s why cross-culture course is so prevailing on campus. Additionally,（其次） some students may choose to learn a certain course in order to obtain an extra certificate for their job hunting after graduation. Last but not least, to make up for their required credit is another universal reason as students select a course at random. As far as I concerned, （“就我看来”，表明自己的观点作总结）I’m inclined to（我更倾向于….） choose electives based on both the value of the course and the interest of my own. I am taking the course of geographic research and discovery course in that I’ve been greatly keen on science since I was a child. 本文来源：https://www.wddqw.com/doc/0b03437501f69e314332940c.html