I am studying preposition related to mode of transportation (English is not my first language). Despite knowing the rule for by, on, in prepositions, I still find them confusing. Can you tell how below sentences differ?

I am in a bus. I am on a bus.

I travelled by bus. I travelled on a bus. I travelled in a bus.

Thank you.

  • I might say 'I travelled by bus' if I had chosen that particular mode of transport for a longer journey.. I would be more likely to say 'I went there on the bus' if I was referring to a familiar, local bus service. – Kate Bunting May 7 '20 at 8:12

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