1. Interesting question and answer, affinity grammar pupils are lively and challenging. Teachers can make use of this feature of students and integrate grammar teaching into it, which can effectively activate students' thinking and stimulate their interest. For example, when teaching the grammar content of the present continuous tense, the teacher prepares a magic box with all kinds of action pictures in it, so that students can draw pictures from the box and then act. Other students can guess and use the sentence pattern "What are you doing? I'm playing … "What is he/she doing? He/she is singing ... In this question-and-answer activity, the students not only mastered the structure and function of grammar, but also learned to express their meaning with what they have learned. At the same time, activities enhance students' self-confidence in learning English well. 2. Learning grammar in songs with bright rhythm and rich sense of rhythm can get twice the result with half the effort. In the process of singing ballads, students can easily master the key sentence patterns and grammatical structures of this lesson and cultivate their sentiments. Second, learn grammar in task activities and internalize language structure. 1. Role-playing. Teachers who participate in the "task" can create situations according to the topic of the unit and the theme of the text, so that students can use their old knowledge to carry out their own dialogues and role-playing according to these situations. For example, teachers can design the classroom as a shop, a family, a meeting place and a basketball court, so that students can use the language they have learned in role-playing activities, which not only enables students to master the language form, but also enables students to use the language form in specific occasions and situations to achieve communication purposes. 2. Investigation activities, practice "tasks" In grammar teaching, teachers can design investigation activities to enable students to learn and master grammar knowledge while completing the investigation tasks. For example, when teaching the simple future tense to and will, the teacher designed the following investigation activities: Tomorrow is Sunday, what are you going to do? How are you going to spend the National Day? Mother's Day is coming, how will you express your feelings for your mother? In the investigation, students understand the meaning of the general future tense and practice the sentence patterns they have learned. At the same time, students realize that they should be grateful and do grateful things. Thirdly, grammar teaching in discourse can improve students' communicative competence. Text input is an effective way for students to learn and understand a language. In English grammar teaching in primary schools, if teachers only let students practice some grammar content mechanically in single sentences, students will not use the grammar independently and freely to express themselves. If grammar is put into the text, students can form a certain perceptual knowledge of the language phenomena in the article during reading, and on this basis, summarize the grammar rules according to the context. Students will be clear about the context and meaning of grammar items, and then master its rules. This will not only deepen students' impression of what they have learned, but also make them feel bored. Such sentences can effectively attract students' attention, enhance their reading interest and help them master the language knowledge they have learned. Teachers can assign writing tasks according to the above contents, so that students can use this grammar project to write a sports activity they have participated in. Such writing activities can not only enable students to learn grammar through texts, but also improve their oral communication ability and written expression ability. In a word, good grammar teaching can make students' language expression and oral communication more accurate and reasonable. In grammar teaching, teachers should consider effective teaching approaches and methods suitable for students, create an environment for students to use English, make grammar teaching more authentic, interesting and communicative, and let students learn language knowledge and form language ability in the process of using language.