The document discusses teaching grammar in isolation versus teaching grammar in context. Teaching grammar in isolation involves separate grammar lessons focusing only on forms and meanings through exercises, while teaching grammar in context involves teaching grammar as it relates to real communication situations. While teaching grammar in isolation helps identify students' performance and ensure they learn rules, it risks being confusing and boring. Teaching grammar in context provides a meaningful framework that connects lessons to reality and allows students to learn how to correctly form and use grammatical structures for communication. The document recommends teaching grammar in context through methods like dialogues that match how language is used in the real world.