It is eight o'clock. 
I go to work by car every day, but today, i'm going to work on foot.
It is a half to nine .

My mother usually stays at home in the morning, but this morning, she is going to  hairdresser's 
It is three o'clock.
In the afternoon, my mother  usually goes to greengrocery. But this afternoon, she is not going to greengrocery.

At the moment ,she is going to see her friends. They go shopping together.
It is a half to five . 
In the evening, we usually  eat dinner at home, but this evening, my mother not does some cooking .

At the moment, we are going out to eat dinner.
It is a  quarter to ten.
My father usually watches tv at night. But he's not watching tv tonight.

At the moment, he's sleeping .   

 

                           (求指导，指错）1.忘记第三人称单数后要变