名词
中文翻译：二层语法
同义词：
['two-tiered grammar', 'two-tiered syntax']
例句：
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1.The two-level grammar model is widely used in teaching English as a second language.
二层语法模型在教授英语作为第二语言时被广泛使用。
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2. This two-level grammar approach helps students understand the structure of sentences more easily.
这种二层语法方法有助于学生更容易地理解句子的结构。
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3.In this study, we will explore the application of two-level grammar in improving student writing skills.
在本研究中，我们将探讨二层语法在提高学生写作技能中的应用。