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 contribute to this situation include...
5. The change in ...largely results from the fact that...
6. We may blame ...,but the real causes are...
7. Part of the explanations for it is that ...
One of the most common factors (causes ) is that ...
Another contributing factor (cause ) is ...
Perhaps the primary factor is that
But the fundamental cause is that ...
2017届高考英语一轮复习精品课件:Unit4《Pulic transport》(牛津译林版选修7)
2017届高考英语一轮复习高频语法专讲专练课件:动词与动词短语
2017届高考英语一轮复习精品课件:同步测试卷3
2017届高考英语一轮复习精品课件:Unit 5《Theme parks》(新人教版必修4湖北专用)
2017届高考英语一轮复习精品课件:高频语法复习5
2017届高考英语一轮复习精品课件:Unit 1《Friendship》(新人教版必修1湖北专用)
2017年高考英语一轮复习试题周周练:周一 Unit1《 Friendship》(新人教版必修1)
2017届高考英语一轮复习精品课件:同步测试卷2
2017届高考英语一轮复习精品课件:Unit3《The meaning time and Unit4 behind beliefs》(牛津译林版选修9)
高三英语人教版总复习之语法专项突破课件:语法专项十六 构词法
2017届高考英语一轮复习精品课件:Unit4《Films and film events》(牛津译林版选修8)
2017年高考英语一轮复习试题周周练:周三 Unit3《Travel Journal》(新人教版必修1)
2017届高考英语一轮复习精品课件:高频语法复习3
2017年高考英语一轮复习试题周周练:周三 Unit3《Computers》(新人教版必修2)
2017届高考英语一轮复习精品课件:同步测试卷1
2017年高考英语一轮复习试题周周练:周二 Unit2《English around the world》(新人教版必修1)
2017届高考英语一轮复习高频语法专讲专练课件:非谓语动词
2017届高考英语一轮复习高频语法专讲专练课件:复合句
2017届高考英语一轮复习精品课件:高频语法复习6
2017届高考英语一轮复习精品课件:Unit 1《Festivals around the world》(新人教版必修3湖北专用)
2017届高考英语一轮复习精品课件:Unit2《What is happiess to you》(牛津译林版选修6)
2017届高考英语一轮复习精品课件:Unit 4《Wildlife protection 》(新人教版必修2湖北专用)
2017届高考英语一轮复习精品课件:Unit 5《Nelson Mandela—a modern hero 》(新人教版必修1湖北专用)
高三英语人教版总复习之语法专项突破课件:语法专项七 动词的时态和语态
2017届高考英语一轮复习精品课件:高频语法复习7
高三英语人教版总复习之语法专项突破课件:语法专项二 冠词
2017届高考英语一轮复习精品课件:Unit 2《The Olympic Games》(新人教版必修2湖北专用)
2017届高考英语一轮复习精品课件:Unit2《The environment》(牛津译林版必修5)
2017届高考英语一轮复习精品课件:同步测试卷5
2017届高考英语一轮复习高频语法专讲专练课件:特殊句式