句群，是按一定的逻辑关系组合成连贯的一段话的几个句子，是积句成段、连段成篇的关键。因此，句群小练笔是三年级作文的重要训练形式。　　一、要精选范例　　叶圣陶先生说：“语文教材无非是个例子”，教师要精心选择句群范例指导阅读、仿写。这些范例的句群结构特点应十分 Sentence group, according to a certain logical combination of a few sentences into a coherent sentence, is a sentence into paragraphs, even the key to articles. Therefore, the sentence group small practice pen is an important form of third-grade essay training. First, to select examples Ye Shengtao said: “Chinese textbooks is nothing more than an example,” teachers should carefully select examples of sentence group to read and copy. The sentence structure of these examples should be very characteristic