Here are some questions, phrases, and sentences for use in the classroom. See also: Free-English-Study: Classroom Questions (Click for Audio)
What's your name?
What is this?
What is that?
How do you say it in English?
How do you spell it?
Please say it again.
Please speak more slowly.
I don't understand.
I'm sorry.
My name is Robert.
You can call me Bob
That's a pencil
It's a desk.
Eraser.
E-R-A-S-E-R.
All right.
Okay. Listen carefully.
Let me explain.
That's okay.
See also: For Conversation practice :
Sitautions: Classroom Questions
Grammar: Wh - Questions
Textbook: New Interchange Intro, Chapter 2