求翻译：对于中年级的学生，随着教材难度的增加，教师可以用母语进行解释一些语法知识。这些语法知识如果用英语进行解释的话，反而得不到预想的效果。使原本简单的意思变的复杂化，让学生觉得云里雾里，完全听不懂。还不如直接用中文进行解释，把词组或句子的结构分析透彻。是什么意思？

For the middle grade students, with the increased difficulty of teaching materials, teachers can use language to explain some of the grammar. The grammar explained in English if the words, but not the desired effect. To change the original meaning of the simple complex, so that students feel foggy,

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Regarding the intermediate grade student, along with the teaching material difficulty increase, the teacher may use the mother tongue to carry on explains some grammar knowledge.If these grammar knowledge carries on the explanation with English, instead cannot obtain the expectation effect.Causes co

For first-year students, with the teaching material in order of increasing difficulty, the teacher can use to explain some mother-tongue knowledge of grammar. These grammatical knowledge to interpret it if in English, but not to the expected results. Complicating the meaning of making simple changes

For the middle grade students, with the increased difficulty of teaching materials, teachers can use language to explain some of the grammar. The grammar explained in English if the words, but not the desired effect. To change the original meaning of the simple complex, so that students feel foggy,