2:00: two o'clock12:00 : twelve o'clock7:00: seven o'clock10:00 : ten o'clock4:30: half past four11:30 : half past eleven8:30: half past eight1:30: half past one
It is very easy:2:00 : two o'clock 12:00: twelve o'clock 7:00 : seven o'clock 10:00: ten o'clock 4:30 : half past four (or four thirty)11:30: half past eleven (同样道理)8:30 : half past eight (同样道理)1:30 : half past one (同样道理)
