Learn about jellyfish before swimming.

Meaning: Before you go swimming in an area where jellyfish are known to live, you should learn about them and how to avoid getting stung.

Choice of Words: Learn is a verb that means to gain knowledge or skill in something. About is a preposition that indicates the subject of the knowledge or skill. Jellyfish is the object of the preposition. Before is a preposition that indicates time. Swimming is a noun that refers to the activity of moving through water.

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Related Expressions