英語四級作文高分句型:基本原因
基本原因 --- 分析某事物時, 用此句型說明其基本的或者多方面的原因.
[1]. The answer to this problem invovles many factors. For one thing... For another...... Still another ...
[2]. A number of factors , both physical and psychological affect .... /both individual and social contribute to ....
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