How can you use did and heard in a sentence?

Here are some examples of how to use "did" and "heard" in a sentence:

* Simple past tense: "I did my homework, and then I heard a knock at the door."

* Question: "Did you hear that the concert was cancelled?"

* Negative: "I did not hear anything suspicious."

* Emphasis: "I did hear you, but I chose to ignore you."

* With another verb: "He did not hear the phone ring."

Let me know if you'd like more examples or have a specific context in mind!