<human>:  In the book, ‘Across the Rocky Mountains’, why did the author use the word ‘soon’ so many times?
<bot>: “Soon” is an adverb that means “immediately” or “very soon”. It is often used to indicate that something is about to happen or is about to happen. In the book, the author uses “soon” to indicate that something is about to happen, such as the coming of winter.