Here are a few examples:
* "Olá!" (Hello!)
* "Que bela vista!" (What a beautiful view!)
* "Cuidado!" (Careful!)
However, there are a few nuances in their use that might differ from English:
* Formal vs. informal: In Portuguese, exclamation marks are more common in informal writing and speech than in formal situations.
* Single vs. double: Portuguese uses a single exclamation mark at the beginning and end of an exclamation.
* Placement: In Portuguese, the exclamation mark goes *inside* the quotation marks, unlike in English where it goes outside.
Overall, exclamation marks are a vital part of the Portuguese language, allowing writers and speakers to express strong emotions and add emphasis to their statements.