How does the novel describe intermittent words?

In the novel, you can use ellipsis to describe intermittent speech in the dialogue between characters. For example:

He tried to speak, but he always spoke intermittently. "I ... I ..."

Or you can use repeated words or sentences to emphasize the incoherence of your speech. For example:

He stammered, "I ... I ... I love you."

These methods can effectively describe the scenes in which characters speak intermittently, so that readers can better understand the emotions and states of characters.