往常 (wǎng cháng): ปกติ

Usually at this time, many elderly people would already be doing tai chi in the park, but today it's raining heavily, so there's not a single person.

He usually takes the subway to work, but today because of a subway malfunction, he had to take a taxi and ended up being half an hour late.

This small restaurant used to do very good business, but ever since a large restaurant opened across the street, it has far fewer customers.