It is not always necessary to say "thank you, teacher". For example, if you call a professor, it is very impolite. Generally, the title is used as the suffix.
Extended data:
About "teacher" English, there are the following:
1, trainer, trainer, coach. Train means "training", so as the name implies, trainer means "trainer" in this sense, and trainer = instructor = coach. The above three words all mean "coach".
He is my fitness instructor. He is my fitness instructor.
2. Family education, private education. One-on-one tutors of training institutions are also tutors. By the way, college students who tutor junior students in order to earn extra money are also a type of tutoring.
Most parents have no time to tutor their children. Most parents have no time to tutor their children.
3. lecturer, lecturer. Some are graduate students or doctoral students who bring basic subjects to undergraduates, some are new teachers who want to take this road to find jobs, and some lecturers in open classes are part-time teachers hired outside the school, and so on. Their "lecturer" status can be called "lecturer".
He is a lecturer in law. He is a lecturer in law.
4. Professor Professor. We should distinguish a concept: a professor belongs to a person's professional position, but a lecturer is actually a title. And "doctor" is an academic degree. In addition, "Master" and "Bachelor" are also degrees.
He was appointed as a tenured professor in this university. He was appointed as a tenured professor in that university.
5. Mentor, mentor. Tutors don't really have much "sacred" color. Anyone who has helped you with his own experience and knowledge in life can be called a mentor, which is more like a "mentor" in a broad sense.
For example, you may need some guidance from your tutor. Some guidance from teachers may be needed.