* Simple: I brush my teeth every day.
* With a verb: She walks her dog every day at 7 am.
* In a negative sentence: I don't go to the gym every day.
* With a prepositional phrase: I eat breakfast every day before work.
* In a complex sentence: Every day, she works hard to achieve her goals.
* With a specific time: I check my email every day at noon.
Remember that "every day" is always two words, even though it refers to a daily frequency.