The phrase "true teacher" is correct and usable in written English.
You can use it to talk about someone who is a good teacher and can impart knowledge and wisdom. For example, "Mrs. Smith is a true teacher - she always encourages us to think critically about the world around us."
But like a true teacher, she also sees his potential.
"He's a true teacher," said Mr. Jackson, a solidly built young man with tightly cropped hair and strong eyebrows.
Williams is the best coach I ever played for in my years in the NFL, a true teacher who developed me as a player.
It was because Giotto was an unspoiled rustic, sketching as he tended his flocks, that he became great, thought Leonardo - because nature is the true teacher.
What this book tells us about Bate is that he has the gift of a true teacher - able at once to educate and to entertain.
Some billboards and leaflets are written with exceptional confidence, one promising "the only true teacher of the world," another "the science of absolute knowledge".
Both Stanislavsky and Grotowski were true teachers, engaged in the art of theater as a lifelong process of discovery and development.
The question is not whether this claim is true – teachers and students who continue to be terrorised by Taliban attacks would find it laughable – but why a senior Afghan official would engage in such misinformation.
He was inducted with Larry Brown, the coach of the Philadelphia 76ers and one of the true teachers left in the profession; North Carolina State's legendary women's coach, Kay Yow; the Harlem Globetrotters; Arizona Coach Lute Olson; and Drazen Petrovic, the Croatian sensation who shattered the N.B.A. talent barrier for European players before he died in a car crash in 1993.
They are the true teachers.
While there could be times that any of these assumptions could be true, teachers are usually honest, fair, and they want to solve problems".
