教材分析：
This teaching period mainly deals with the grammar: the restrictive relative clauses.
This period carries considerable significance to the cultivation of students’ writing competence and lays a solid foundation for the basic appreciation of language beauty. The teacher is expected to enable students to master this period thoroughly and consolidate the knowledge by doing some exercise of good quality.
教学目标与核心素养：
1. Get students to have a good understanding of the basic usages of the restrictive relative clauses.
2. Enable students to use the restrictive relative clauses flexibly.
3. Develop students’ speaking and cooperating abilities.
4. Strengthen students’ great interest in grammar learning.
