题目内容：
根据题目要求完成下列任务，用中文作答。
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：