What time is it?这是什么时候了? 
It's 7 o'clock.It's time to get up.7点钟了，该起床了。  
Brasilia ,9 a.m. 巴西利亚早9点 
Hurry up! It's time for school!快点!到上学的时间了! 
Sydney 10 p.m.悉尼晚10点 
It's 10 o'clock.It's time to go to bed.现在是10点，该睡觉了。