1. At the beginning of a sentence:
* Example: The weather was terrible. *However*, we still had a great time.
2. In the middle of a sentence, followed by a comma:
* Example: I was exhausted, *however*, I couldn't sleep.
3. At the end of a sentence, preceded by a semicolon:
* Example: She tried to call him; *however*, he didn't answer.
Here are some examples of how "however" can be used in a sentence:
* To show contrast: I wanted to go to the beach, however, it was raining.
* To introduce an exception: Most of the students did well on the test; however, a few struggled.
* To emphasize a point: The movie was long, however, it was very entertaining.
Remember, "however" is often used to signal a shift in thought or to provide a different perspective on the preceding idea.