C at
at + 点种， at seven o'clock 在七点
at noon 在中午， at night在夜里
in + 年/月/季节 ， in 2010, in January, in spring, in a week, in the morning 等
on + 具体的日期/ 星期， 如： on June 12, on Monday, o...
when do you watch TV?
C at
at + 点种， at seven o'clock 在七点
at noon 在中午， at night在夜里
in + 年/月/季节 ， in 2010, in January, in spring, in a week, in the morning 等
on + 具体的日期/ 星期， 如： on June 12, on Monday, o...