As a noun:
* The usher showed us to our seats at the theater.
* The wedding usher was responsible for guiding guests to their tables.
* The usher politely asked us to hold our applause until the end of the performance.
As a verb:
* The music ushered in a new era of creativity.
* The new year ushered in a period of peace and prosperity.
* The storm clouds ushered in a torrential downpour.
You can also use "usher" in a figurative sense:
* Her smile ushered in a wave of warmth and happiness.
* The announcement of the new product ushered in a surge of excitement among investors.
These are just a few examples, and the specific way you use "usher" will depend on the context of your sentence.