1. "Excuse me" is a polite expression used when we need to disturb someone or engage in an act that may not be very polite. - "Excuse me, but are you Mr. Rodriguez from Brazil?" - Excuse me, are you Mr. Rodriguez from Brazil? - "Excuse me? I'm sorry, I couldn't hear you clearly." - Pardon me? I'm sorry, I couldn't hear you clearly.2. "Sorry" is primarily used to express apologies. - "Sorry, I'm late." - I'm sorry for being late. - "Sorry to hear that." - I'm sorry to hear that. - "Sorry, I didn't catch what you said." - Excuse me, I didn't catch what you said.3. "Pardon me" is used when you haven't heard or understood something and ask for repetition. - "I beg your pardon. I couldn't quite hear you." - Pardon me, I couldn't quite hear you. - "Oh, I beg your pardon!" - Oh, pardon me!