交际法在英语教学中实施以来英语语法教学受到了前所未有的挑战。
English grammar teaching has been challenged unprecedentedly ever since the communicative approach was implemented in English teaching.
知识经济的浪潮滚滚而来，作为经济领域中传统的会计理论、会计方法、会计实践及会计教学模式受到强烈的冲击与挑战。
As the tide of the knowledge economy rolls in, traditional accounting theory, method, practise and teaching mode in the economy field are strongly assaulted and challenged.
由于大学英语精读配套的光盘软件和各种教参辅导书的大量出现，大学英语教学正受到了前所未有的挑战。
The rise in the multimedia system and the number of teaching reference books poses a great challenge to the traditional teaching method and compels us to adapt it to the new environment.
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