俗话说，良好的开端等于成功的一半。做事如此，大学英语三级作文写作也是如此。
所以，在作文的开头花一番心思，是获取大学英语三级作文高分的关键。
那么，当大学英语三级作文要求写议论文时，你通常以什么样的方式开头呢？最简单也最常用的可能就是开门见山法，直截了当地提出你对这个问题的观点，点出文章的中心思想。
1、…has both advantages and disadvantages
2、Obviously television has both advantages and disadvantages
3、Living in a city has both advantages and disadvantages
4、Compared with cars，bikes have their advantages and disadvantages
或者更为复杂的句型
1、Although computers bring people a lot of convenience，they have many disadvantages
2、…has many advantages．For example，…However，just as every coin has two sides，…has its disadvantages
3、…play（s）an important role ／part in…
我们在大学英语三级作文写作中也经常会用到这句话“在……中扮演重要角色／起重要作用”，那哪些表达方式呢？
1、Computers play an important role in science and technology
2、Computers play a more and more important role in our life
3、Computers play an increasingly important role in our studies
4、Education plays an important part in developing our mind
5、Addiction to alcohol and drugs play a role in homelessness
复杂点的：
1、Advertisement plays an informative role in our daily life．
2、In the past，letters played a decisive role in long-distance communication．But now ，telephone，email，fax have taken their place
差不多最常用的也就是这些了，虽然常用，但是只要修改一下主谓宾的前后顺讯，何尝不会让人眼前一亮？
但是，大学英语三级作文写作最重要的是要学会积累，一些好的表达方式最好摘抄下来，说不定在考试中就想起来，然后用了呢。