Teaching and controlling students
* Please be quiet(pay attention to me [Sang-soo]) now.
* All right, stop now.
* Your time is over(up) now.
* I told you once to stop doing that.
* I won't tell you again.
* I'll give you a yellow(blue) slip if you do again.
* Hands off,(don't touch it) please.

Helping individual and group activities
* Let's do this activity.
* Please begin with this row(these two rows, the next row,
the next group).
* Take it in turns, starting here.
* One after the other, please.
* In turn, starting here(with Jin-mi).
* Ask Jin-mi the same question.
* Now it's your turn to ask Chul-soo.
* Whose turn is it now? = Who is the next one?
* Let's practice with you pairs(threes, fours).
* Work together with your friend.
* Now form your groups.
* Four in each group.
* I'll divide the class into two parts.
* This part on this side will play the part for speaker A, and
the other half on this side will play the part for speaker B.
* Let's change our roles this time.

Reviewing and closing remarks
* Let's review today's lesson. = I'd like to review today's lesson.
* Review lesson 1 right now(at home).
* I want you to remember today's study.
* Let's have a short review of our lesson.
* We will study one lesson every two weeks.
* We are right on schedule.
* This is your homework for tomorrow.
* Have a wonderful day(weekend).
* All right. That's all for today's lesson.
* It's time to stop.

Evaluating
* Written and oral evaluation
- Excellent / Very good / Good / Poor / Very poor
* Oral evaluation :
- That's correct.
You have done well.
That's a good effort.
Good try, but not quite right.
Don't give up.
Try to guess.
Take time.
That's wrong.
Sorry, that's not right.

Useful expressions for students
* Mr. Green, what does ' 'mean?
* How can I say ' ' in Korean(English)?
* How do you say ' 'in English?
* What do you call that(this,it)?
* May I ask a question?
* I'm sorry I can't follow you(I don't understand you).
* I beg you pardon?
* Sorry, may I bother you?