为了帮助同学们在英语四级写作中取得高分，编辑老师整理了这篇2014年大学英语四级作文常用句型集锦，希望考生可以将这些简单句型变换成复杂句以便提升作文的质量，获得高分。
1. It is considered /thought that 人们(有人,大家)认为
2. It is generally /usually accepted /agreed/recognized that 普遍(一般,通常)认为
3. It is believed that -有人(人们,大家)相信
4. It is well-known that 大家知道(众所周知)
5. It is said that 据说(有人说)
6. It is learned that 据闻(悉)
7. It is supposed that据推测
8. It is estimated/predicted/calculated that据估计(预计
9. It must be pointed that 必须指出
10. It is reported that据报道
11. It must be admitted that必须承认