1. Introduction to English teacher to introduce the students to know.2. clarification of the purpose of the teacher, the students know how many students will be especially subject?
1. introduce an English teacher. To introduce students to recognize 2. The teacher explained to students what they will learn about the subject matter of what.
1. Teachers introduce yourself in English. In order to introduce the students to know 2. Teachers explain the purpose for students to know how to get เรียนกี่ about something.