Final answer:
The sentences were rephrased to use comparative and superlative forms, reflecting the intended meaning of the original sentences in a different structure.
Step-by-step explanation:
The appropriate transformed sentences are as follows:
- That watch is better than this one.
- My sister now writes more carefully than she used to.
- This is the most interesting story I have ever read.
- I've never known a more beautiful girl than her.
- Tom drives more carefully than Peter.
These sentences utilize comparative and superlative forms to make comparisons between different subjects or to indicate something having the highest degree of a certain quality.