1. Situation dialogues

2. Where: at the teacher’s home
When: late in the evening
Who: A is a teacher
B is his student
What: the student says he is very grateful to the teacher for his help

3. Where: in the classroom
When: in the afternoon
Who: two friends
What: one has just given the other a ticket for an exhibition

4. Where: in the dining hall
When: at six o’clock in the evening
Who: A is a new student from the south
B is a third-year student
What: they’re talking about the food they are eating