Work in pairs. choose one of situations in the box and write a dialogue. follow the dialogue map to help you. student a 1 ask what's wrong. 2 show surprise/interest. ask another question. 3 say the situation isn't so terrible. 4 cheer your friend up. 5 say something positive. student b answer as question. give more information. disagree with a. respond to a's comment.

a: hey, is everything ok?

b: no, it's not.

a: what happened? something bad?

b: yes, my father had a car crash this morning. he had a surgery an hour ago.

a: cheer up! he'll be okay if he managed to survive until now.

b: no, nothing is sure. next couple of hours will decide whether he'll ever walk again or not.

a: don't worry i'm sure you father will be alright, he's a strong person from what i heard. you'll see he'll be walking and running in no time!

b: thanks.

смотри вложенный файл.

пусть abcd - прямоугольник, а  ae - биссектриса.

стороны ad и вс равгы по 12 + 8 = 20 см.

биссектриса ае разбивает прямой угол на 2 по 45 градусов, поэтому треугольник аве - равнобедренный прямоугольный.

если по условию ве = 8 см, то и ав = 8 см.

если же  ве = 12см, то и ав = 12 см.