小语第七册《避雨》一文运用了这样一个俗语:“打破沙锅问到底”。学生通过预习很快了解了词的意思。课堂上有个同学问:“沙锅’的‘沙’能否用‘砂’?”我让学生一起来辨析“沙”“砂”两字,同学们查了字典。“沙”与“砂”是同音字,“沙”的意思有四:①细小的石粒;②象沙一样的东西;③姓; Small language seventh book “rain” article uses the saying goes: “Break the casserole asked in the end.” Students quickly learn the meaning of the word through the preview. There is a classmate in the classroom asks: Can the sand in the casserole be made of sand? I asked the students to distinguish the words sand and sand, and the students checked the dictionary. “Sand” and “sand” are homographs, and “sand” means four things: (1) small stones, (2) sand-like things, (3)