on Sundays
He goes swimming on Sundays.
at the moment
She's listening to music at the moment.
at the moment
He's writing an email at the moment.
always
He always helps his mum.
often
He often plays with his friends.
at the weekend
He visits his grandma at the weekend.
sometimes
She sometimes has a music lesson.
in the evening
She does her homework in the evenning.
now
She's reading a book now.
now
She's watching TV now.