大学英语四级作文常用句型

　　一)原因

大学英语四级作文常用句型

　　1.A number of factors are accountable for this situation.

　　A number of factors might contribute to the phenomenon.

　　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 is that ...

　　Another contributing factor is ...

　　Perhaps the primary factor is that

　　But the fundamental cause is that

　　二)比较

　　1.The advantage far outweigh the disadvantages.

　　2.The advantages of A are much greater than those of B.

　　3.A may be preferable to B, but A suffers from the disadvantages that...

　　4.It is reasonable to maintain that ...but it would be foolish to claim that...

　　5.For all the disadvantages, it has its compensating advantages.

　　6.Like anything else, it has its faults.

　　7.A and B has several points in common.

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