Когда писать aren't you,а когда don't you? не послушал тему, уже 2 за получил. объясните . решите это( нужно): #20. 1) his name's george, isn't it (образец) 2)you live in 3) ted is from 4)you're you start school at nine o'clock every . #21 1) you're from london, aren't you? -no i'm not.i'm from liverpool. playing tennis, don't touch? -yes, i do.i pay every day. thirteen years old, aren't you? -yes, i am. in the flat, don't you? -no, i don't.i love in a house. the violin, don't you? -yes, i do. i okay in an orchestra. school at nine o'clock,don't you? -no, i don't.i start at eight o'clock.

Окончание isn't you или don't you, зависит от того в каком  времени стоит предложение. Брется вс глагол этого времени и местоимения из тоего предложения. Если предложение отрицательное, то окончание будет положительным, а если предложение утвердительное, то конец отрицательный. По русски мы в таких предложениях говорим "Не правда ли?" или что-то подобное. Тоесть don't you это present simple, a aren't you это present continious.

#20.
2)You live in Bristol, don't you?
3) Ted is from Wales, isn't he?
4)You're late, aren't you?
You start school at nine o'clock every day, don't you?
#21
2) You like playing tennis, don't you?-Yes, I do.I play every day.
3) You are thirteen years old, aren't you?-Yes, I am.
4) You live in the flat, don't you?-No, I don't.I live in a house. 
5)
6) You play the violin, don't you?-Yes, I do. I play in an orchestra. 
7) You start school at nine o'clock, don't you?-No, I don't.I start at eight o'clock.