おとうと　が　チョコレート　を　たべました。（active sentence with transitive verb)

My younger brother ate a chocolate.

チョコレート　が　おとうと　に　たべられました。(direct passive sentence)

A chocolate was eaten by my younger brother.

おとうと　に　チョコレート　を　たべられました。(indirect passive sentence)

A chocolate was eaten by my younger brother. (I was annoyed by my younger brother)

あめ　が　ふりました。(active sentence with intransitive verb)

It rained.

あめ　に　ふられました。(indirect passive sentence)

I was annoyed by rain. ( if I would translate)

Reference:

Passive Sentence #1

https://anchor.fm/yuya-sato/episodes/Passive-Sentence-1-e10ffo6

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