Hi Michela Opinion on/about can be used interchangeably for the most part. I have a strong opinion about/on something However there is a third variant which is with the preposition "of". It is usually used to indicate how a person feels about something . For example, I have a high opinion of the city ... Or What is your opinion of me ? Hope this helps

Hi Michela, Opinion on/about are similar becuse both of them describes your ideas or beliefs regarding a particular matter or topic.However,phrase opinion about is often used to express when someone doesn’t have an opinion;as in “I don’t have an opinion about this.” So , choose one of them depend on situations

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