How time flies
Refers to time passing quickly. This is commonly used especially when talking about how children grow and develop.
mom:it seems it was just yesterday that Mandy graduated from Kindergarten school. Now I'm a grandmother. Mandy: My, how time flies.
the appropriate time for something.
It's high time we did something about this broken down truck. I'm planning of selling it and buying a new one.
time after time
to repeat something over and over again
Time after time Tom was late for school. His teacher told him if he was late again he would be in big trouble.
too much time on my hands
means that you have too much free time and not enough things to do.
Joe watches TV 24/7 because he has too much time on his hands. He needs to get a job.
a whale of a time
means to have a great time; to do something really fun
We had a whale of a time at your barbecue. Will you be hosting another one next weekend?