原因 & M; Y3 ^: l- E/ A9 r 1.A number of factors are accountable for this situation. / \ M) S: L$ k A number of factors might contribute to (lead to )(account for ) the phenomenon(problem).. c; J' C: z7 u1 w2 O# |
2. The answer to this problem involves many factors. 8 M. g1 d0 U& ?5 W' P( j5 m4 V 3. The phenomenon mainly stems from the fact that... 0 Z9 G% c( p* Q& ? 4. The factors that contribute to this situation include...* z! p' i" h2 {# A6 y- _) c l, b
5. The change in ...largely results from the fact that... / z4 B# x7 _" W9 l9 H9 o 6. We may blame ...,but the real causes are...; R3 Z o$ i0 u; h. M0 l6 L6 c
7. Part of the explanations for it is that ...! p6 G A4 x+ I
One of the most common factors (causes ) is that ... 2 K* h6 A) \: O* Z Another contributing factor (cause ) is ... ; _0 H& r! Q: g4 b7 a' L Perhaps the primary factor is that… 8 _. p5 s( l, W* r7 N1 c But the fundamental cause is that ...
发表于 2012-8-14 10:35:42
