大学英语四级写作常用句型.doc

大学英语四级作文写作八种常用句型 一)原因 1.A number of factors are accountable for this situation. A number of factors might contribute to (lead to )(account for ) the phenomenon(problem). 2. The answer to this problem involves many factors. 3. The phenomenon mainly stems from the fact that... 4. The factors that