There are many ways that teachers can teach grammar. Some common methods include:
-explaining grammar rules and providing examples
-having students identify errors in example sentences
-giving students practice exercises to complete
-assigning essays or other writing assignments that require proper grammar
-conducting regular grammar lessons as part of the curriculum
Grammar can be taught in a number of ways, and what works best will vary depending on the teacher, the students, and the specific grammar concepts being taught. Some teachers find that a mix of methods is most effective, while others may prefer to focus on just one or two. The important thing is to find a teaching style that works for you and your students.