1. turn up出现，调高；出现，露面turn down 调低；拒绝turn off关掉turn on打开turn in上交turn out结果是，证明是turn to sb (for help)向某人求助
2. by 6 o’clock在六点之前 = no later than 6 o’clock
3. It’s a waste of time doing/to do sth 做…是浪费时间waste time on sth /(in) doing sth浪费时间做……
4. no more computer games不再有电脑游戏
5. force sb to do sth /force sb into doing sth迫使某人做某事
