Here's why and some examples:
Why it works:
* It creates a clear cause-and-effect relationship. The sentence starts by stating the reason (the "because" clause) and then provides the result or consequence.
* It emphasizes the reason. Placing "because" at the beginning adds emphasis to the reason behind the action or statement.
Examples:
* Because she was late, she missed the beginning of the movie.
* Because of the heavy rain, the game was cancelled.
* Because I didn't study enough, I failed the test.
Important Note:
* Informal writing often avoids starting sentences with "because." It can sound too direct or even childish in casual writing.
* You can usually rewrite the sentence to avoid using "because" at the beginning. For example, instead of "Because she was late, she missed the beginning of the movie," you could write "She missed the beginning of the movie because she was late."
In short, it's grammatically correct to start a sentence with "because" in formal writing, but it's best to avoid it in informal writing.