Can two exclamation marks be used in one sentence?

Yes, you can use two exclamation marks in a sentence, but it's generally not considered good grammar.

Here's why:

* Double exclamation marks are informal: They're often used in online chat or casual writing, but not in formal writing.

* They can be confusing: Using two exclamation marks can make it seem like you're shouting or overly excited, and it can be difficult to tell which exclamation mark is meant to be stronger.

Here are some alternatives:

* Use one exclamation mark and emphasize the words: "This is *amazing*!"

* Use a different punctuation mark: "This is incredible! I can't believe it!"

* Reword the sentence: "I am so excited! This is amazing."

While you technically *can* use two exclamation marks, it's best to avoid them unless you're writing in a very informal setting.