Clouds change shapes.
Meaning: This means that the outlines or forms of the clouds are becoming different. It's like saying, The clouds are changing from one shape to another.
Choice of Words: Clouds are large collections of water droplets or ice crystals that float in the sky. Change means to become different. Shapes are the outlines or forms of objects. In this sentence, the word shapes is used to show that the outlines or forms of the clouds are becoming different.
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Related Expressions