用一堆的I used to be...,but now...比如说 I used to be short,but now I'm taller than before.I used to spend some time playing with my friends,but I can't do that now,because I have too much homework to do everyday.I used to be lazy,but now I know I have to work hard.I used to watch TV a lot,but now I don't have the time any more.I used to get up late on weekends,but now I get up early to go over my lessons. I have changed a lot !