Read the passage.It had rained for the entire week before we went river rafting. The rain made the river swell with extra water. In fact, the river was a speeding train by the time we got there. Thus, we had quite the adventure.

“The river was a speeding train” is a metaphor. It compares the fast-moving river to a speeding train without using “like” or “as.” The phrase describes how swiftly the river was flowing.

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