一位教师在课堂上，先呈现了几个例句：
（1）I like the scenery here.
（2）He studies very hard every day.
（3）They often play volleyball on the seashore.
（4）A grammar book helps you learn something about the rules of a language.
（5）Grammar books help you learn something about the rules of a language.
让学生自己总结语法规则，然后运用语法规则进行各种练习。
请问该教师使用了哪种语法教学方法？该方法有什么优点？与此相对应的方法是什么？有什么优缺点？