adv (1)今天(on the day on which one is speaking or writing this)：arrive/go to the beach～今天到达/去海滨;〖同〗on this day，now;

(2)当代(今);现在(at the present time in these days)：(children/women) get a good education/no longer accept such treatment～现在(儿童/妇女)受到良好的教育/不再受到这种待遇;〖同〗nowadays，now;

n(1)今天(day on which one is speaking or writing this)[U]：T～is my brother's birthday/the first day of spring. 今天是我兄弟的生日/春天的开始。～'s paper/ homework/work 今天的报纸/作业/工作;leave a week (from)～下周的今天离开;begin～next week 下周的今天开始;〖同〗this day;

(2)当代(今);现在(present day，time or age)[U]：the songs/clothes/world of～当今的歌曲/时装/世界;the composers/young people of～当代的作曲家/年轻人;the～schedule/generation 目前的时刻表/当今的一代