题目内容：
下面是某教师的课堂教学片段： T: What did your mum do yesterday, Wang Lin? S: My mum buyed the dress for me. T: Oh, that is nice. Your mum bought it for you, did she? S: Yes. T: Where did she buy it? S: She buyed it in town. T: Oh, she bought it in town for you. Well, it is very nice. 请根据所给材料回答下列三个问题。 (1)学生在对话中的语言错误是什么?(6分) (2)该教师采用什么方式来纠正学生的错误?效果如何?(12分) (3)教师还可以采用哪些方式纠错?请举例说明。(12分)
答案解析：