Beginning a sentence with one grammatical pattern and then switching to another one confuses readers.
| MIXED | The fact that I get up at 5:00 am, a wake-up time that explains why I’m always tired in the evening. |
The sentence starts out with a subject (The fact) followed by a dependent clause (that I get up at 5:00 am). The sentence needs a predicate to complete the independent clause, but instead it moves to another phrase followed by a dependent clause (a wake-up time that explains why I’m always tired in the evening), and a fragment results.
| REVISED | The fact that I get up at 5:00 am explains why I’m always tired in the evening. |
Deleting a wake-up time that changes the rest of the sentence into a predicate.
| REVISED | I get up at 5:00 am, a wake-up time that explains why I’m always tired in the evening. |
Deleting The fact that turns the beginning of the sentence into an independent clause.