英語四級作文萬能句型：原因
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距離2013年英語四級考試開考的日子越來越近了，作文作為英語四級考試當中非常重要的一塊內容，各位考生應當重視起來。平時多加練習，多加積累，在考場上才能寫出精彩的作文。
1.A number of factors are accountablefor this situation.
A number of factors might contributeto (lead to )(account for) the phenomenon (problem).
2.The answer to this problem involvesmany factors.
3.The phenomenonmainly 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 explanationsfor it is that ...
One of the most common factors (causes .is that ...
Another contributing factor (cause .is ...
Perhaps the primaryfactor is that …
But the fundamental cause is that
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